https://gem.epss.ucla.edu/mediawiki/api.php?action=feedcontributions&feedformat=atom&user=Hyominkimgem - User contributions [en]2026-05-24T12:01:46ZUser contributionsMediaWiki 1.33.0https://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=6247FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2023-06-11T18:03:47Z<p>Hyominkim: /* 2023 GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2023 GEM Session Schedule ==<br />
'''Session 1, Monday, June 12, 15:30 - 17:00 PDT (Room: Pacific B)'''<br />
(Zoom Link: https://njit-edu.zoom.us/j/4144130087?pwd=UzJKVUt5dG5tSEJlN1Y5TWc3QXBFUT09, Meeting ID: 414 413 0087, Passcode: 7ZyrQM)<br />
* Hyomin Kim/Zhonghua Xu, Intro/Geospace Exploration and Observation with Scientific COllaboration in Polar Regions (GEOSCOPR), towards IPY 2032<br />
* Yue Deng, Inter-Hemispheric Asymmetries in the High-Latitude Electrodynamic Forcing and Impacts on Thermosphere During October 8-9, 2012 Storm<br />
* Nicholas Bartel, Interhemispheric Asymmetry of Field-Aligned Currents Determined by Principal Component Analysis of AMPERE-Iridium NEXT Magnetometer Data<br />
* Rick Wilder, The Atmospheric Electrodynamics probe for THERmal (AETHER) plasma Investigation: Global Observations of Electron Density and Temperature With the Geospace Dynamics Constellation (GDC)<br />
* Matthew Cooper (VIRTUAL), Structured Parallel Bulk Flows Recovered from a Thermodynamic Fitting Study of Van Allen Probes RBSPICE Data<br />
* Niloufar Nowrouzi (VIRTUAL), Interhemispheric Asymmetry in Ionospheric O+ and H+ Outflows <br />
* Ying Zou, Hemispheric symmetry and asymmetry of PMRAFs during a geomagnetic storm<br />
* Marc Lessard, Interhemispheric Asymmetries of Neutral Upwelling and Ion Upflow<br />
* Yining Shi, Interhemispheric asymmetries in large magnetic field residuals between Swarm observations and Earth magnetic field model during non-storm times<br />
* James Weygand, Interhemispheric asymmetry due to IMF By in the cusp SECs and ionospheric current reconfiguration times<br />
* Shin Ohtani (presented by Tetsuo Motoba), Breakdown of Interhemispheric Conjugacy of Auroral beading<br />
<br />
'''Session 2 (Joint with GIC and MPEC), Thursday, June 15, 10:30 - 12:00 PDT (Room: Pacific A)'''<br />
* See the GIC session schedule<br />
<br />
== 2022 mini-GEM Session Schedule ==<br />
'''GIC-GMAG-IHMIC joint session, Sunday, 11 December, 12:00 - 13:30 CT, Room: Williford B at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Zoom link: https://alaska.zoom.us/j/87956087298?pwd=ZnY2cUExeVFHV0djcmxKOTBUTm9HQT09, Meeting ID: 879 5608 7298, Passcode: 455961)<br />
* Dogacan Ozturk/Xueling Shi: Introduction<br />
* Lisa Winter/Jesse Woodroffe: Agency updates<br />
* Daniel Welling: GIC SSC<br />
* Michael Hartinger: US GMAG board updates<br />
* James Weygand: HDRL/DOIs, data sharing<br />
* Peter Chi: GMAG network challenges<br />
* US GMAG network updates<br />
<br />
'''IHMIC session, Sunday, December 11, 13:45 - 15:15 CT, Room: Waldorf at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Webex link: njit.webex.com/meet/hmkim)<br />
* Hyomin Kim, Interhemispheric Observations of High Latitude Ground Responses Under Various Solar Wind Conditions<br />
* Karl Laundal, The relationship between interhemispheric asymmetries in polar ionospheric convection and the magnetic field line footpoint displacement field<br />
* Anthea Coster, Equatorial and Polar Asymmetries –Data and Model Comparisons<br />
* Tomoko Matsuo, Interhemispheric Asymmetry of Field-Aligned Currents Determined by Principal Component Analysis of AMPERE-Iridium NEXT Magnetometer Data<br />
* James Weygand, Interhemispheric symmetry and asymmetry within the cusp spherical elementary currents during large IMF By magnitudes<br />
* Shane Coyle, The 2021 Antarctic Total Eclipse: Ground Magnetometer and GNSS Wave Observations from the 40 Degree Magnetic Meridian<br />
* Zhonghua Xu, Interhemispheric ULF Pc5 Correlation Study<br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
(Note the CEDAR session is held at 16:00-18:00 CDT (11:00-13:00 HST)<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad, "Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted"<br />
* Daniel Welling, "Center for the Unified Study of Interhemispheric Asymmetries (CUSIA)" <br />
* SungJun Noh, "Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events" <br />
* Karl Laundal, "The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field" <br />
* Marc Lessard, "Interhemispheric effects on ion upflow and neutral upwelling" <br />
* Dogacan Ozturk, "Quantification of Interhemispheric Asymmetry" <br />
* Shane Coyle, "Eclipse Campaign"<br />
* Austin Smith, "Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm" <br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=6246FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2023-06-11T18:02:23Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2023 GEM Session Schedule ==<br />
'''Session 1, Monday, June 12, 15:30 - 17:00 PDT (Room: Pacific B)'''<br />
(Zoom Link: https://njit-edu.zoom.us/j/4144130087?pwd=UzJKVUt5dG5tSEJlN1Y5TWc3QXBFUT09, Meeting ID: 414 413 0087, Passcode: 7ZyrQM)<br />
* Hyomin Kim/Zhonghua Xu, Intro/Geospace Exploration and Observation with Scientific COllaboration in Polar Regions (GEOSCOPR), towards IPY 2032<br />
* Yue Deng, Inter-Hemispheric Asymmetries in the High-Latitude Electrodynamic Forcing and Impacts on Thermosphere During October 8-9, 2012 Storm<br />
* Nicholas Bartel, Interhemispheric Asymmetry of Field-Aligned Currents Determined by Principal Component Analysis of AMPERE-Iridium NEXT Magnetometer Data<br />
* Rick Wilder, The Atmospheric Electrodynamics probe for THERmal (AETHER) plasma Investigation: Global Observations of Electron Density and Temperature With the Geospace Dynamics Constellation (GDC)<br />
* Matt Cooper, Structured Parallel Bulk Flows Recovered from a Thermodynamic Fitting Study of Van Allen Probes RBSPICE Data (VIRTUAL)<br />
* Niloufar Nowrouzi, Interhemispheric Asymmetry in Ionospheric O+ and H+ Outflows (VIRTUAL)<br />
* Ying Zou, Hemispheric symmetry and asymmetry of PMRAFs during a geomagnetic storm<br />
* Marc Lessard, Interhemispheric Asymmetries of Neutral Upwelling and Ion Upflow<br />
* Yining Shi, Interhemispheric asymmetries in large magnetic field residuals between Swarm observations and Earth magnetic field model during non-storm times<br />
* James Weygand, Interhemispheric asymmetry due to IMF By in the cusp SECs and ionospheric current reconfiguration times<br />
* Shin Ohtani (presented by Tetsuo Motoba), Breakdown of Interhemispheric Conjugacy of Auroral beading<br />
<br />
'''Session 2 (Joint with GIC and MPEC), Thursday, June 15, 10:30 - 12:00 PDT (Room: Pacific A)'''<br />
* See the GIC session schedule<br />
<br />
<br />
== 2022 mini-GEM Session Schedule ==<br />
'''GIC-GMAG-IHMIC joint session, Sunday, 11 December, 12:00 - 13:30 CT, Room: Williford B at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Zoom link: https://alaska.zoom.us/j/87956087298?pwd=ZnY2cUExeVFHV0djcmxKOTBUTm9HQT09, Meeting ID: 879 5608 7298, Passcode: 455961)<br />
* Dogacan Ozturk/Xueling Shi: Introduction<br />
* Lisa Winter/Jesse Woodroffe: Agency updates<br />
* Daniel Welling: GIC SSC<br />
* Michael Hartinger: US GMAG board updates<br />
* James Weygand: HDRL/DOIs, data sharing<br />
* Peter Chi: GMAG network challenges<br />
* US GMAG network updates<br />
<br />
'''IHMIC session, Sunday, December 11, 13:45 - 15:15 CT, Room: Waldorf at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Webex link: njit.webex.com/meet/hmkim)<br />
* Hyomin Kim, Interhemispheric Observations of High Latitude Ground Responses Under Various Solar Wind Conditions<br />
* Karl Laundal, The relationship between interhemispheric asymmetries in polar ionospheric convection and the magnetic field line footpoint displacement field<br />
* Anthea Coster, Equatorial and Polar Asymmetries –Data and Model Comparisons<br />
* Tomoko Matsuo, Interhemispheric Asymmetry of Field-Aligned Currents Determined by Principal Component Analysis of AMPERE-Iridium NEXT Magnetometer Data<br />
* James Weygand, Interhemispheric symmetry and asymmetry within the cusp spherical elementary currents during large IMF By magnitudes<br />
* Shane Coyle, The 2021 Antarctic Total Eclipse: Ground Magnetometer and GNSS Wave Observations from the 40 Degree Magnetic Meridian<br />
* Zhonghua Xu, Interhemispheric ULF Pc5 Correlation Study<br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
(Note the CEDAR session is held at 16:00-18:00 CDT (11:00-13:00 HST)<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad, "Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted"<br />
* Daniel Welling, "Center for the Unified Study of Interhemispheric Asymmetries (CUSIA)" <br />
* SungJun Noh, "Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events" <br />
* Karl Laundal, "The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field" <br />
* Marc Lessard, "Interhemispheric effects on ion upflow and neutral upwelling" <br />
* Dogacan Ozturk, "Quantification of Interhemispheric Asymmetry" <br />
* Shane Coyle, "Eclipse Campaign"<br />
* Austin Smith, "Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm" <br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=6245FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2023-06-11T18:02:05Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2023 GEM Session Schedule ==<br />
'''Session 1, Monday, June 12, 15:30 - 17:00 PDT (Room: Pacific B)'''<br />
(Zoom Link: https://njit-edu.zoom.us/j/4144130087?pwd=UzJKVUt5dG5tSEJlN1Y5TWc3QXBFUT09, Meeting ID: 414 413 0087, Passcode: 7ZyrQM)<br />
* Hyomin Kim/Zhonghua Xu, Intro/Geospace Exploration and Observation with Scientific COllaboration in Polar Regions (GEOSCOPR), towards IPY 2032<br />
* Yue Deng, Inter-Hemispheric Asymmetries in the High-Latitude Electrodynamic Forcing and Impacts on Thermosphere During October 8-9, 2012 Storm<br />
* Nicholas Bartel, Interhemispheric Asymmetry of Field-Aligned Currents Determined by Principal Component Analysis of AMPERE-Iridium NEXT Magnetometer Data<br />
* Rick Wilder, The Atmospheric Electrodynamics probe for THERmal (AETHER) plasma Investigation: Global Observations of Electron Density and Temperature With the Geospace Dynamics Constellation (GDC)<br />
* Matt Cooper, Structured Parallel Bulk Flows Recovered from a Thermodynamic Fitting Study of Van Allen Probes RBSPICE Data (VIRTUAL)<br />
* Niloufar Nowrouzi, Interhemispheric Asymmetry in Ionospheric O+ and H+ Outflows (VIRTUAL)<br />
* Ying Zou, Hemispheric symmetry and asymmetry of PMRAFs during a geomagnetic storm<br />
* Marc Lessard, Interhemispheric Asymmetries of Neutral Upwelling and Ion Upflow<br />
* Yining Shi, Interhemispheric asymmetries in large magnetic field residuals between Swarm observations and Earth magnetic field model during non-storm times<br />
* James Weygand, Interhemispheric asymmetry due to IMF By in the cusp SECs and ionospheric current reconfiguration times<br />
* Shin Ohtani (presented by Tetsuo Motoba), Breakdown of Interhemispheric Conjugacy of Auroral beading<br />
<br />
'''Session 2 (Joint with GIC and MPEC), Thursday, June 15, 10:30 - 12:00 PDT (Room: Pacific A)'''<br />
See the GIC session schedule<br />
<br />
<br />
== 2022 mini-GEM Session Schedule ==<br />
'''GIC-GMAG-IHMIC joint session, Sunday, 11 December, 12:00 - 13:30 CT, Room: Williford B at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Zoom link: https://alaska.zoom.us/j/87956087298?pwd=ZnY2cUExeVFHV0djcmxKOTBUTm9HQT09, Meeting ID: 879 5608 7298, Passcode: 455961)<br />
* Dogacan Ozturk/Xueling Shi: Introduction<br />
* Lisa Winter/Jesse Woodroffe: Agency updates<br />
* Daniel Welling: GIC SSC<br />
* Michael Hartinger: US GMAG board updates<br />
* James Weygand: HDRL/DOIs, data sharing<br />
* Peter Chi: GMAG network challenges<br />
* US GMAG network updates<br />
<br />
'''IHMIC session, Sunday, December 11, 13:45 - 15:15 CT, Room: Waldorf at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Webex link: njit.webex.com/meet/hmkim)<br />
* Hyomin Kim, Interhemispheric Observations of High Latitude Ground Responses Under Various Solar Wind Conditions<br />
* Karl Laundal, The relationship between interhemispheric asymmetries in polar ionospheric convection and the magnetic field line footpoint displacement field<br />
* Anthea Coster, Equatorial and Polar Asymmetries –Data and Model Comparisons<br />
* Tomoko Matsuo, Interhemispheric Asymmetry of Field-Aligned Currents Determined by Principal Component Analysis of AMPERE-Iridium NEXT Magnetometer Data<br />
* James Weygand, Interhemispheric symmetry and asymmetry within the cusp spherical elementary currents during large IMF By magnitudes<br />
* Shane Coyle, The 2021 Antarctic Total Eclipse: Ground Magnetometer and GNSS Wave Observations from the 40 Degree Magnetic Meridian<br />
* Zhonghua Xu, Interhemispheric ULF Pc5 Correlation Study<br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
(Note the CEDAR session is held at 16:00-18:00 CDT (11:00-13:00 HST)<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad, "Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted"<br />
* Daniel Welling, "Center for the Unified Study of Interhemispheric Asymmetries (CUSIA)" <br />
* SungJun Noh, "Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events" <br />
* Karl Laundal, "The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field" <br />
* Marc Lessard, "Interhemispheric effects on ion upflow and neutral upwelling" <br />
* Dogacan Ozturk, "Quantification of Interhemispheric Asymmetry" <br />
* Shane Coyle, "Eclipse Campaign"<br />
* Austin Smith, "Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm" <br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=6015FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-12-10T02:10:23Z<p>Hyominkim: /* 2022 mini-GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
== 2022 mini-GEM Session Schedule ==<br />
'''GIC-GMAG-IHMIC joint session, Sunday, 11 December, 12:00 - 13:30 CT, Room: Williford B at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Zoom link: https://alaska.zoom.us/j/87956087298?pwd=ZnY2cUExeVFHV0djcmxKOTBUTm9HQT09, Meeting ID: 879 5608 7298, Passcode: 455961)<br />
* Dogacan Ozturk/Xueling Shi: Introduction<br />
* Lisa Winter/Jesse Woodroffe: Agency updates<br />
* Daniel Welling: GIC SSC<br />
* Michael Hartinger: US GMAG board updates<br />
* James Weygand: HDRL/DOIs, data sharing<br />
* Peter Chi: GMAG network challenges<br />
* US GMAG network updates<br />
<br />
'''IHMIC session, Sunday, December 11, 13:45 - 15:15 CT, Room: Waldorf at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Webex link: njit.webex.com/meet/hmkim)<br />
* Hyomin Kim, Interhemispheric Observations of High Latitude Ground Responses Under Various Solar Wind Conditions<br />
* Karl Laundal, The relationship between interhemispheric asymmetries in polar ionospheric convection and the magnetic field line footpoint displacement field<br />
* Anthea Coster, Equatorial and Polar Asymmetries –Data and Model Comparisons<br />
* Tomoko Matsuo, Interhemispheric Asymmetry of Field-Aligned Currents Determined by Principal Component Analysis of AMPERE-Iridium NEXT Magnetometer Data<br />
* James Weygand, Interhemispheric symmetry and asymmetry within the cusp spherical elementary currents during large IMF By magnitudes<br />
* Shane Coyle, The 2021 Antarctic Total Eclipse: Ground Magnetometer and GNSS Wave Observations from the 40 Degree Magnetic Meridian<br />
* Zhonghua Xu, Interhemispheric ULF Pc5 Correlation Study<br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
(Note the CEDAR session is held at 16:00-18:00 CDT (11:00-13:00 HST)<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad, "Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted"<br />
* Daniel Welling, "Center for the Unified Study of Interhemispheric Asymmetries (CUSIA)" <br />
* SungJun Noh, "Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events" <br />
* Karl Laundal, "The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field" <br />
* Marc Lessard, "Interhemispheric effects on ion upflow and neutral upwelling" <br />
* Dogacan Ozturk, "Quantification of Interhemispheric Asymmetry" <br />
* Shane Coyle, "Eclipse Campaign"<br />
* Austin Smith, "Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm" <br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=6005FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-12-09T19:22:40Z<p>Hyominkim: /* 2022 miniGEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
== 2022 mini-GEM Session Schedule ==<br />
'''GIC-GMAG-IHMIC joint session, Sunday, 11 December, 12:00 - 13:30 CT, Room: Williford B at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Zoom link: https://alaska.zoom.us/j/87956087298?pwd=ZnY2cUExeVFHV0djcmxKOTBUTm9HQT09, Meeting ID: 879 5608 7298, Passcode: 455961)<br />
* Mark Engebretson, Occurrence distributions and morphology of large geomagnetic disturbances observed in Arctic Canada<br />
* Michael Madelaire, Transient high latitude geomagnetic response to rapid increases in solar wind dynamic pressure<br />
* Cheng Sheng, Ground Magnetic Perturbations due to Neutral-wind Driven Ionospheric Currents<br />
* Matthew Blandin, TBD<br />
* Hannah Parry, geoelectric field and GIC measurement comparisons<br />
* Shibaji Chakraborty, Modeling geomagnetic induction in submarine cables<br />
<br />
'''IHMIC session, Sunday, December 11, 13:45 - 15:15 CT, Room: Waldorf at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Webex link: njit.webex.com/meet/hmkim)<br />
* Hyomin Kim, Interhemispheric Observations of High Latitude Ground Responses Under Various Solar Wind Conditions<br />
* Karl Laundal, The relationship between interhemispheric asymmetries in polar ionospheric convection and the magnetic field line footpoint displacement field<br />
* Anthea Coster, Equatorial and Polar Asymmetries –Data and Model Comparisons<br />
* Tomoko Matsuo, Interhemispheric Asymmetry of Field-Aligned Currents Determined by Principal Component Analysis of AMPERE-Iridium NEXT Magnetometer Data<br />
* James Weygand, Interhemispheric symmetry and asymmetry within the cusp spherical elementary currents during large IMF By magnitudes<br />
* Shane Coyle, The 2021 Antarctic Total Eclipse: Ground Magnetometer and GNSS Wave Observations from the 40 Degree Magnetic Meridian<br />
* Zhonghua Xu, Interhemispheric ULF Pc5 Correlation Study<br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
(Note the CEDAR session is held at 16:00-18:00 CDT (11:00-13:00 HST)<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad, "Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted"<br />
* Daniel Welling, "Center for the Unified Study of Interhemispheric Asymmetries (CUSIA)" <br />
* SungJun Noh, "Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events" <br />
* Karl Laundal, "The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field" <br />
* Marc Lessard, "Interhemispheric effects on ion upflow and neutral upwelling" <br />
* Dogacan Ozturk, "Quantification of Interhemispheric Asymmetry" <br />
* Shane Coyle, "Eclipse Campaign"<br />
* Austin Smith, "Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm" <br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=6004FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-12-09T19:21:51Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
== 2022 miniGEM Session Schedule ==<br />
'''GIC-GMAG-IHMIC joint session, Sunday, 11 December, 12:00 - 13:30 CT, Room: Williford B at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Zoom link: https://alaska.zoom.us/j/87956087298?pwd=ZnY2cUExeVFHV0djcmxKOTBUTm9HQT09, Meeting ID: 879 5608 7298, Passcode: 455961)<br />
* Mark Engebretson, Occurrence distributions and morphology of large geomagnetic disturbances observed in Arctic Canada<br />
* Michael Madelaire, Transient high latitude geomagnetic response to rapid increases in solar wind dynamic pressure<br />
* Cheng Sheng, Ground Magnetic Perturbations due to Neutral-wind Driven Ionospheric Currents<br />
* Matthew Blandin, TBD<br />
* Hannah Parry, geoelectric field and GIC measurement comparisons<br />
* Shibaji Chakraborty, Modeling geomagnetic induction in submarine cables<br />
<br />
'''IHMIC session, Sunday, December 11, 13:45 - 15:15 CT, Room: Waldorf at Hilton Chicago Hotel (720 South Michigan Avenue, Chicago)'''<br />
(Webex link: njit.webex.com/meet/hmkim)<br />
* Hyomin Kim, Interhemispheric Observations of High Latitude Ground Responses Under Various Solar Wind Conditions<br />
* Karl Laundal, The relationship between interhemispheric asymmetries in polar ionospheric convection and the magnetic field line footpoint displacement field<br />
* Anthea Coster, Equatorial and Polar Asymmetries –Data and Model Comparisons<br />
* Tomoko Matsuo, Interhemispheric Asymmetry of Field-Aligned Currents Determined by Principal Component Analysis of AMPERE-Iridium NEXT Magnetometer Data<br />
* James Weygand, Interhemispheric symmetry and asymmetry within the cusp spherical elementary currents during large IMF By magnitudes<br />
* Shane Coyle, The 2021 Antarctic Total Eclipse: Ground Magnetometer and GNSS Wave Observations from the 40 Degree Magnetic Meridian<br />
* Zhonghua Xu, Interhemispheric ULF Pc5 Correlation Study<br />
<br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
(Note the CEDAR session is held at 16:00-18:00 CDT (11:00-13:00 HST)<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad, "Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted"<br />
* Daniel Welling, "Center for the Unified Study of Interhemispheric Asymmetries (CUSIA)" <br />
* SungJun Noh, "Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events" <br />
* Karl Laundal, "The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field" <br />
* Marc Lessard, "Interhemispheric effects on ion upflow and neutral upwelling" <br />
* Dogacan Ozturk, "Quantification of Interhemispheric Asymmetry" <br />
* Shane Coyle, "Eclipse Campaign"<br />
* Austin Smith, "Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm" <br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5926FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-06-23T22:21:26Z<p>Hyominkim: /* 2022 GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
(Note the CEDAR session is held at 16:00-18:00 CDT (11:00-13:00 HST)<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad, "Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted"<br />
* Daniel Welling, "Center for the Unified Study of Interhemispheric Asymmetries (CUSIA)" <br />
* SungJun Noh, "Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events" <br />
* Karl Laundal, "The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field" <br />
* Marc Lessard, "Interhemispheric effects on ion upflow and neutral upwelling" <br />
* Dogacan Ozturk, "Quantification of Interhemispheric Asymmetry" <br />
* Shane Coyle, "Eclipse Campaign"<br />
* Austin Smith, "Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm" <br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5922FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-06-23T17:33:27Z<p>Hyominkim: /* 2022 GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
(Note the CEDAR session is held at 16:00-19:00 CDT (11:00-14:00 HST)<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad: Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted<br />
* Daniel Welling: Center for the Unified Study of Interhemispheric Asymmetries (CUSIA)<br />
* SungJun Noh: Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events<br />
* Karl Laundal: The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field<br />
* Dong Lin: Geospace Concussion: Global Reversal of Ionospheric Vertical Plasma Drift in Response to a Sudden Commencement<br />
* [CANCELLED] James Weygand: Interhemispheric Asymmetry Due to IMF By in the Cusp Spherical Elementary Currents<br />
* Dogacan Ozturk: Quantification of Interhemispheric Asymmetry" <br><br />
* Austin Smith: Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm<br />
* Shane Coyle: Eclipse Campaign<br />
* Ilya Kuzichev: TBD<br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5909FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-06-21T20:47:49Z<p>Hyominkim: /* 2022 GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
(Note the CEDAR session is held at 16:00-19:00 CDT (11:00-14:00 HST)<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad: Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted<br />
* Daniel Welling: Center for the Unified Study of Interhemispheric Asymmetries (CUSIA)<br />
* SungJun Noh: Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events<br />
* Karl Laundal: The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field<br />
* Dong Lin: Geospace Concussion: Global Reversal of Ionospheric Vertical Plasma Drift in Response to a Sudden Commencement<br />
* James Weygand: Interhemispheric Asymmetry Due to IMF By in the Cusp Spherical Elementary Currents<br />
* Dogacan Ozturk: Quantification of Interhemispheric Asymmetry" <br><br />
* Austin Smith: Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm<br />
* Shane Coyle: Eclipse Campaign<br />
* Ilya Kuzichev: TBD<br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5878FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-06-18T20:08:18Z<p>Hyominkim: /* 2022 GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
(Note the CEDAR session is held at 16:00-19:00 CDR (11:00-14:00 HST)<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad: Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted<br />
* Daniel Welling: Center for the Unified Study of Interhemispheric Asymmetries (CUSIA)<br />
* SungJun Noh: Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events<br />
* Karl Laundal: The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field<br />
* Dong Lin: Geospace Concussion: Global Reversal of Ionospheric Vertical Plasma Drift in Response to a Sudden Commencement<br />
* James Weygand: Interhemispheric Asymmetry Due to IMF By in the Cusp Spherical Elementary Currents<br />
* Dogacan Ozturk: Quantification of Interhemispheric Asymmetry" <br><br />
* Austin Smith: Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm<br />
* Shane Coyle: Eclipse Campaign<br />
* Ilya Kuzichev: TBD<br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5877FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-06-18T20:00:03Z<p>Hyominkim: /* 2022 GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
(Note the CEDAR session is held at 16:00-19:00 CDR (11:00-14:00 HST)<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad: Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted<br />
* Daniel Welling: Center for the Unified Study of Interhemispheric Asymmetries (CUSIA)<br />
* SungJun Noh: Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events<br />
* Karl Landal: The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field<br />
* Dong Lin: Geospace Concussion: Global Reversal of Ionospheric Vertical Plasma Drift in Response to a Sudden Commencement<br />
* James Weygand: Interhemispheric Asymmetry Due to IMF By in the Cusp Spherical Elementary Currents<br />
* Dogacan Ozturk: Quantification of Interhemispheric Asymmetry" <br><br />
* Austin Smith: Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm<br />
* Shane Coyle: Eclipse Campaign<br />
* Ilya Kuzichev: TBD<br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5876FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-06-18T19:47:26Z<p>Hyominkim: /* 2022 GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
== 2022 GEM Session Schedule ==<br />
'''IHMIC/CEDAR Joint Session on Thursday, June 23, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Hyomin Kim: Investigation of Deep Polar Cap Dynamics Using an Autonomous Instrument Network <br />
* Bea Gallardo-Lacourt: Identifying the polar cap boundary location using redline imaging data and DMSP.<br />
* Nithin Sivadas: Uncertainty in solar wind forcing and its relation to saturation of geomagnetic indices<br />
* Asti Bhatt: Wave activity observed at RISR-N during Polar summer<br />
* David Themens: Simplified solar energetic proton ionization and polar cap absorption for the Empirical and Assimilation Canadian High Arctic Ionospheric Models (E-/A-CHAIM)<br />
* Leslie Lamarche: The Modified Apex-Rotated Pole (MARP) Coordinate System<br />
* Diana Loucks: Space weather and high-latitude effects: an Academy perspective<br />
* Michael Negale: Using ionospheric data assimilations to model polar cap patch airglow intensities<br />
* Alanah Cardenas-O'Toole: Statistical and event analysis of phase and amplitude scintillations associated with polar cap patches<br />
* Lindsay Goodwin: Utilizing Lomb-Scargle Periodograms and Advanced Radar Techniques to Monitor Polar Cap Density Structures<br />
<br />
'''IHMIC/IEMIT Joint Session on Thursday, June 23, 15:30 - 17:00 HST (Room: Alohilani II)'''<br />
* Jone Peter Reistad: Global dayside reconnection depends on Sign of IMF By when Earth's dipole is tilted<br />
* Daniel Welling: CUSIA<br />
* SungJun Noh: Interhemispheric Propagation of EMIC Waves Occurred by a Series of Foreshock Transient Events<br />
* Karl Landau: The Relationship Between Interhemispheric Asymmetries in Polar Ionospheric Convection and the Magnetic Field Line Footpoint Displacement Field<br />
* Dong Lin: Geospace Concussion: Global Reversal of Ionospheric Vertical Plasma Drift in Response to a Sudden Commencement<br />
* James Weygand: Interhemispheric Asymmetry Due to IMF By in the Cusp Spherical Elementary Currents<br />
* Dogacan Ozturk: Quantification of Interhemispheric Asymmetry" <br><br />
* Austin Smith: Interhemispheric Asymmetries in the Energy Budget of I-T System During the 2013 St. Patrick's Day Storm<br />
* Ilya Kuzichev: TBD<br />
* Shane Coyle: Eclipse Campaign<br />
<br />
'''IHMIC/GIC Joint Session on Friday, June 24, 10:30 - 12:00 HST (Room: Alohilani II)'''<br />
* Mark Engebretson: Observations of conjugate high latitude geomagnetic disturbances that can cause GICs<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic ULF wave response to interplanetary shocks at high latitudes-Case Study<br />
* Hyomin Kim: Magnetosphere-Ionosphere Coupling Studies Using the PSWS Magnetometer Network <br />
* Bob Lysak: Cavity Mode Structure of Pi2 Pulsations<br />
* Thomas Elsden: Modelling the Varying Location of Field Line Resonances During Geomagnetic Storms<br />
* Martin Archer: What are the ionospheric and ground magnetic signatures of global magnetopause surface modes?<br />
* Simone Di Matteo: Global and local ULF waves in response to solar wind periodic density structures<br />
* Gabby Nowak: Relationship Between Geomagnetic Field Variations and External Drivers Across Different Latitudes and Hemispheres<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5541FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-01-31T15:51:24Z<p>Hyominkim: /* 2021 mini-GEM (hybrid) Session Schedule (held jointly with the IEMIT session) */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse - Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie - Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang - COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill - Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi - Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay - Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson - Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong - Inter-Hemispheric Asymmetry in the Ionosphere-Thermosphere System During the 8-9 October 2012 Geomagnetic Storm: Multi-Instrumental Observations and GITM Simulations<br />
* Hyomin Kim - Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh - Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu - Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi - Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston - Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5540FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-01-31T15:48:45Z<p>Hyominkim: /* 2021 VGEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse, Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie, Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang, COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill, Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi, Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon, The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay, Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson, Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi, Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston, Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh - Ground signatures associated with HFA/FB <br />
* Zhonghua Xu - The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin - Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5539FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-01-31T15:44:31Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse, Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie, Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang, COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill, Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi, Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon, The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay, Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson, Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi, Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston, Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC <br />
* Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh: Ground signatures associated with HFA/FB <br />
* Zhonghua Xu: The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin: Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5538FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-01-31T04:55:34Z<p>Hyominkim: /* 2021 VGEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse, Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie, Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang, COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill, Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi, Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon, The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay, Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson, Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi, Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston, Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling<br />
* Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh: Ground signatures associated with HFA/FB <br />
* Zhonghua Xu: The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin: Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5537FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-01-31T03:22:56Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse, Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie, Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang, COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill, Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi, Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon, The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay, Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson, Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi, Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston, Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh: Ground signatures associated with HFA/FB <br />
* Zhonghua Xu: The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin: Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5536FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2022-01-31T03:21:17Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1 will be held jointly with IHMIC FG: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
* Christine Gabrielse, Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie, Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang, COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill, Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Yining Shi, Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon, The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2 will be held jointly with IHMIC FG: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
* Agnit Mukhopadhyay, Global Driving of Auroral Precipitation - Balance of Sources<br />
* Mark Engebretson, Interhemispheric conjugacy of magnetic perturbation events that cause GICs<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Interhemispheric Pc 1 wave propagation associated with foreshock transient events during quiet solar wind condition<br />
* Zhonghua Xu, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* Xueling Shi, Multipoint conjugate observations of dayside ULF waves during an extended period of radial IMF<br />
* Marc Hairston, Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
<br />
== 2021 VGEM Session Schedule ==<br />
'''Session 1: Monday, July 26, 1:00 - 2:30 pm (US Eastern Time)'''<br />
* Mark Engebretson - Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their inherhemispheric conjugacy. <br />
* Dan Welling - Understanding Asymmetries using the Capabilities Assessment Matrix<br />
* Viacheslav Pilipenko - Electromagnetic fields of magnetospheric ULF disturbances in conjugate ionospheres: Current/voltage dichotomy<br />
* Matthias Foerster - Implications of the Earth's magnetic field asymmetry for the M-I-T coupling Doga Ozturk/Ilya Kuzichev - Investigating Interhemispheric Asymmetry Across Modeled Ionospheric Parameters<br />
* Mike Hartinger - Planning for the 4 December 2021 Antarctic eclipse<br />
* Christian Bagby-Wright, Asymmetric Effects of Reflected By on Polar Activity<br />
* Anders Ohma - IMF By induced asymmetries and tail reconnection<br />
<br />
'''Session 2: Monday, July 26, 3:00 - 4:30 pm (US Eastern Time)'''<br />
* Anthea Coster - Interhemispheric Asymmetries as observed by GNSS TEC Yining Shi - Interhemispheric Asymmetries in Magnetosphere Ionosphere Magnetic Field Residuals Between Swarm Observations and Earth Magnetic Field Models<br />
* Sungjun Noh: Ground signatures associated with HFA/FB <br />
* Zhonghua Xu: The correlation study of ULF wave responses on the ground under different interplanetary shock conditions<br />
* Sarah Vines - Probing Interhemispheric Asymmetries in the Birkeland Currents with AMPERE<br />
* John Coxon - The interhemispheric asymmetry in Birkeland currents<br />
* James Weygand - Interhemispheric Asymmetry in the Cusp Spherical Elementary Currents<br />
* Delores Knipp - Hemispheric Asymmetries in derived DMSP Poynting Flux<br />
* Ivan Pakhotin: Northern Preference for Poynting Flux Input into the Dayside and Nightside Ionosphere<br />
<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 2021 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5504FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-11T18:08:35Z<p>Hyominkim: /* 2021 mini-GEM (hybrid) Session Schedule (held jointly with the IEMIT session) */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse, Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie, Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang, COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill, Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Agnit Mukhopadhyay, Global Driving of Auroral Precipitation - Balance of Sources<br />
* Yining Shi, Interhemispheric Asymmetries in Large Magnetosphere and Ionosphere Magnetic Field Residuals between Swarm Observations and Earth Magnetic Field Models<br />
* Astrid Maute, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon, The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their Interhemispheric Conjugacy and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston, Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5495FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-11T03:56:40Z<p>Hyominkim: /* 2021 mini-GEM (hybrid) Session Schedule (held jointly with the IEMIT session) */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse, Precipitating Energy Flux, Average Energy, and Hall Auroral Conductance from THEMIS All-Sky-Imagers during Two Substorms: Mesoscale Contributions<br />
* Dillon Gillespie, Diffuse Aurora and Ionospheric Conductance derived from Chorus waves in the inner magnetosphere<br />
* Zihan Wang, COMPASS: a new COnductance Model based on PFISR And SWARM Satellite observations<br />
* Shannon Hill, Capturing Theta Aurora Observations: SWMF Simulation Results<br />
* Agnit Mukhopadhyay, Global Driving of Auroral Precipitation - Balance of Sources<br />
* Yining Shi<br />
* Astrid Maute, Influence of MI and lower atmospheric coupling during a moderate geomagnetic storm<br />
* John Coxon, The interhemispheric asymmetry in Birkeland currents<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their Interhemispheric Conjugacy and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston, Variations in the Ionospheric Penetration Electric Field During the 2013 St. Patrick’s Day Storm Between the Northern and Southern Hemispheres<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5487FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-10T20:06:03Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System IEMIT] session) == <br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse<br />
* Dillon Gillespie<br />
* Zihan Wang<br />
* Shannon Hill<br />
* Agnit Mukhopadhyay<br />
* Yining Shi<br />
* Astrid Maute, Lower atmospheric forcing on asymmetries to magnetosphere-ionosphere coupling<br />
* John Coxon<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their Interhemispheric Conjugacy and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5486FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-10T20:04:37Z<p>Hyominkim: /* 2021 mini-GEM (hybrid) Session Schedule (held jointly with [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System]) */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the IEMIT session [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System]) == <br />
<br />
<br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse<br />
* Dillon Gillespie<br />
* Zihan Wang<br />
* Shannon Hill<br />
* Agnit Mukhopadhyay<br />
* Yining Shi<br />
* Astrid Maute, Lower atmospheric forcing on asymmetries to magnetosphere-ionosphere coupling<br />
* John Coxon<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their Interhemispheric Conjugacy and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5485FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-10T20:03:46Z<p>Hyominkim: /* 2021 mini-GEM (hybrid) Session Schedule (held jointly with the IEMIT session) */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System]) == <br />
<br />
<br />
<br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse<br />
* Dillon Gillespie<br />
* Zihan Wang<br />
* Shannon Hill<br />
* Agnit Mukhopadhyay<br />
* Yining Shi<br />
* Astrid Maute, Lower atmospheric forcing on asymmetries to magnetosphere-ionosphere coupling<br />
* John Coxon<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their Interhemispheric Conjugacy and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5484FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-10T20:01:22Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System, the IEMIT session]) == <br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse<br />
* Dillon Gillespie<br />
* Zihan Wang<br />
* Shannon Hill<br />
* Agnit Mukhopadhyay<br />
* Yining Shi<br />
* Astrid Maute, Lower atmospheric forcing on asymmetries to magnetosphere-ionosphere coupling<br />
* John Coxon<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their Interhemispheric Conjugacy and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5483FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-10T20:00:51Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System, the IEMIT session]) == <br />
Location: Hilton Garden Inn New Orleans Convention Center (1001 South Peters Street New Orleans, LA 70130) or Zoom<br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse<br />
* Dillon Gillespie<br />
* Zihan Wang<br />
* Shannon Hill<br />
* Agnit Mukhopadhyay<br />
* Yining Shi<br />
* Astrid Maute, Lower atmospheric forcing on asymmetries to magnetosphere-ionosphere coupling<br />
* John Coxon<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their Interhemispheric Conjugacy and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5482FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-10T19:57:17Z<p>Hyominkim: /* 2021 mini-GEM (hybrid) Session Schedule (held jointly with the IEMIT session link) */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System, the IEMIT session]) == <br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse<br />
* Dillon Gillespie<br />
* Zihan Wang<br />
* Shannon Hill<br />
* Agnit Mukhopadhyay<br />
* Yining Shi<br />
* Astrid Maute, Lower atmospheric forcing on asymmetries to magnetosphere-ionosphere coupling<br />
* John Coxon<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their Interhemispheric Conjugacy and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5481FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-10T19:56:36Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the IEMIT session [https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System, link]) == <br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse<br />
* Dillon Gillespie<br />
* Zihan Wang<br />
* Shannon Hill<br />
* Agnit Mukhopadhyay<br />
* Yining Shi<br />
* Astrid Maute, Lower atmospheric forcing on asymmetries to magnetosphere-ionosphere coupling<br />
* John Coxon<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their Interhemispheric Conjugacy and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston <br />
<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5480FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-10T19:55:17Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule (held jointly with the IEMIT session {https://gem.epss.ucla.edu/mediawiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System}) == <br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse<br />
* Dillon Gillespie<br />
* Zihan Wang<br />
* Shannon Hill<br />
* Agnit Mukhopadhyay<br />
* Yining Shi<br />
* Astrid Maute, Lower atmospheric forcing on asymmetries to magnetosphere-ionosphere coupling<br />
* John Coxon<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their Interhemispheric Conjugacy and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston <br />
<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5479FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-10T19:51:31Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule == <br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse<br />
* Dillon Gillespie<br />
* Zihan Wang<br />
* Shannon Hill<br />
* Agnit Mukhopadhyay<br />
* Yining Shi<br />
* Astrid Maute, Lower atmospheric forcing on asymmetries to magnetosphere-ionosphere coupling<br />
* John Coxon<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: Investigating their Interhemispheric Conjugacy and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston <br />
<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5478FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-12-10T19:51:00Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-GEM (hybrid) Session Schedule == <br />
'''Session 1: Sunday, December 12, 14:00 - 15:30 (US Central Time)'''<br />
<br />
* Christine Gabrielse<br />
* Dillon Gillespie<br />
* Zihan Wang<br />
* Shannon Hill<br />
* Agnit Mukhopadhyay<br />
* Yining Shi<br />
* Astrid Maute, Lower atmospheric forcing on asymmetries to magnetosphere-ionosphere coupling<br />
* John Coxon<br />
<br />
'''Session 2: Sunday, December 12, 15:45 - 17:15 (US Central Time)'''<br />
<br />
* Mark Engebretson, Magnetic Perturbation Events (MPEs) that cause GICs: �Investigating their Interhemispheric Conjugacy �and Control by IMF Orientation<br />
* Yu Hong<br />
* Hyomin Kim, Characterization of Interhemispheric Asymmetries Driven by External Drivers<br />
* Sungjun Noh, Pc 1 wave observations associated with foreshock transient events<br />
* Zhonghua Xu, The role of shock impact angle in asymmetric ground magnetic responses<br />
* Xueling Shi<br />
* Marc Hairston <br />
<br />
<br />
== 2020 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5238FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-01-21T14:38:09Z<p>Hyominkim: /* 2021 mini-VGEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ramon Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Robert Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Michael Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5237FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-01-20T20:21:22Z<p>Hyominkim: /* 2021 mini-VGEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What will be the next step forward in understanding interhemispheric MI coupling?<br />
# What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ray Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Bob Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Mike Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5236FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-01-20T20:13:39Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
<br />
Overarching questions for this session:<br />
# How can the level of asymmetry be quantified from various observations and modeling results?<br />
# What do you think the next step forward in understanding interhemispheric MI coupling?<br />
#What type of research from other sub-disciplines could be helpful to close the gap in our understanding of interhemispheric MI coupling?<br />
<br />
Presentation List:<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ray Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Bob Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Mike Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5235FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2021-01-20T19:57:01Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2021 mini-VGEM Session Schedule == <br />
'''Thursday, January 21, 10:00 am - 12:00 pm (US Eastern Time)'''<br />
* Hyomin Kim, Interhemispheric Asymmetries in High-Latitude M-I Coupling Processes: Magnetic field Perturbations, Currents and Convection<br />
* Sungjun Noh, Interhemispheric Ground Responses to Hot Flow Anomalies <br />
* Astrid Maute, MI coupling considering interhemispheric asymmetries: ionospheric perspective<br />
* Ray Lopez, The Center for the Unified Study of Interhemispheric Asymmetries: Research Focus and Future plans<br />
* Claudia Stolle, Characteristics of auroral field-aligned current viewed by different missions (GRACE-FO, DMSP, i.a.)<br />
* Bob Strangeway, Interhemispherical Asymmetries in Radial Currents Observed at Low Altitudes by AMPERE During a Geomagnetic Storm<br />
* Anthea Coster, Joseph Huba, Stan Sazykin, and Richard Wolf, Model-Data Exploration of Hemispherical Asymmetries in the Magnetosphere /Ionosphere System<br />
* Mike Hartinger, Inter-hemispheric Comparisons during High-Latitude Solar Eclipses<br />
<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5129FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2020-07-23T19:26:09Z<p>Hyominkim: /* 2020 VGEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
* Ray Lopez and Bob Strangeway, The Center for Understanding Interhemispheric Asymmetries Initial Event Studies<br />
<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients<br />
* Yu Hong, Inter-hemispheric asymmetries in high-latitude I-T system: GITM simulations<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5116FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2020-07-22T17:18:18Z<p>Hyominkim: /* Focus Group Term */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2023 (1 year extended due to the pandemic)<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Bob Strangeway, TBD<br />
* Ray Lopez, TBD<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients.<br />
* Slava Pilipenko, TBD<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5091FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2020-07-17T16:31:29Z<p>Hyominkim: /* 2020 VGEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Bob Strangeway, TBD<br />
* Ray Lopez, TBD<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, Interhemispheric ULF comparison related to Interplanetary shocks<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients.<br />
* Slava Pilipenko, TBD<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5090FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2020-07-17T15:24:50Z<p>Hyominkim: /* 2020 VGEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern Time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Bob Strangeway, TBD<br />
* Ray Lopez, TBD<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, TBD<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern Time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients.<br />
* Slava Pilipenko, TBD<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5089FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2020-07-17T15:24:25Z<p>Hyominkim: /* 2020 VGEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm (US Eastern time)'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Bob Strangeway, TBD<br />
* Ray Lopez, TBD<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, TBD<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm (US Eastern time)'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients.<br />
* Slava Pilipenko, TBD<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5088FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2020-07-17T15:01:36Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the [https://www.vgem2020.com/ VGEM website] to get access to the sessions.<br />
We will try the traditional way for Q/A by using your own mic/speaker. Use Zoom to "raise your hand" to ask questions. <br />
<br />
'''Thursday, July 23, 1:00 pm - 2:30 pm'''<br />
* Dan Welling, CUSIA: The Center for the Unified Study of Interhemispheric Asymmetries<br />
* Bob Strangeway, TBD<br />
* Ray Lopez, TBD<br />
* Mark Engebretson, Interhemispheric comparisons of large nighttime magnetic perturbation events relevant to GICs<br />
* Bob Lysak, Quarter wave modes: Variation of the conductance ratio<br />
* Zhonghua Xu, TBD<br />
<br />
<br />
'''Thursday, July 23, 3:00 pm - 4:30 pm'''<br />
* James Weygand, Examples of Hemispherically Conjugate Auroral Omega Bands<br />
* Stephan C. Buchert, Sq and Interhemispherically Entangled Dynamos<br />
* Qing-He Zhang Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail<br />
* Delores Knipp and Liam Kilcommons, DMSP Poynting Flux in The Auroral Zone and Polar Cap from Both Hemispheres<br />
* Xueling Shi, Interhemispheric Observations of Ground Responses to Upstream Transients.<br />
* Slava Pilipenko, TBD<br />
<br />
<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5087FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2020-07-17T14:49:28Z<p>Hyominkim: /* 2020 VGEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the VGEM website [https://www.vgem2020.com/ VGEM] to get access to the sessions.<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=5086FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2020-07-17T14:48:17Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2020 VGEM Session Schedule == <br />
All sessions will take place virtually on Zoom. Please log into the VGEM website [https://www.vgem2020.com/] to get access to the sessions.<br />
<br />
<br />
<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=4832FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2020-03-14T20:04:48Z<p>Hyominkim: /* 2019 GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 24, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=4719FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2019-12-07T02:28:46Z<p>Hyominkim: /* 2019 mini-GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by Thom Edwards), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 22, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=4713FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2019-12-06T18:41:52Z<p>Hyominkim: /* 2019 mini-GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by M. Hartinger), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 22, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=4712FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2019-12-06T05:21:55Z<p>Hyominkim: /* 2019 mini-GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
* Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
* Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
* Bob Clauer, PRIC project update<br />
* Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
* Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
* Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
* KathrynR. Kirkevold (presented by M. Hartinger), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
* James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field irresponsible parties<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 22, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=4711FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2019-12-06T05:21:15Z<p>Hyominkim: </p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2019 mini-GEM Session Schedule ==<br />
Location: Holiday Inn-Golden Gateway, 1500 Van Ness Ave, San Francisco, CA. Time: 12:00 - 13:30 <br />
<br />
Bob Lysak, Numerical Investigation of Quarter-Wave Modes<br />
Zhonghua Xu, Inter-hemispheric comparison of ground magnetic response to interplanetary shocks: Shock impact angle versus timing and intensities of ground magnetic response<br />
Bob Clauer, PRIC project update<br />
Thom Edwards, Recent Events from DTU's Magnetometer Program and Our Role in Interhemispheric Comparisons<br />
Thom Edwards, Incidence of Alfvenic SC pulse (1-2 slides from Slava Pilipenko)<br />
Yining Shi, Event study of field-aligned currents (FACs) and their interhemispheric asymmetries revealed by assimilative analysis of AMPERE magnetic perturbation data<br />
KathrynR. Kirkevold (presented by M. Hartinger), Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events<br />
James Weygand, The Response of Field Aligned Currents to Northward Interplanetary Magnetic Field irresponsible parties<br />
<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 22, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=FG:_Interhemispheric_Approaches_to_Understand_M-I_Coupling_(IHMIC)&diff=4490FG: Interhemispheric Approaches to Understand M-I Coupling (IHMIC)2019-06-24T12:35:23Z<p>Hyominkim: /* 2019 GEM Session Schedule */</p>
<hr />
<div>== Focus Group Leaders ==<br />
* Hyomin Kim, New Jersey Institute of Technology (hmkim@njit.edu)<br />
* Robert Lysak, University of Minnesota<br />
* Tomoko Matsuo, University of Colorado at Boulder<br />
<br />
<br />
== Focus Group Term ==<br />
* 2018 - 2022<br />
<br />
<br />
== Focus Group Topic Description and Science Questions ==<br />
The main goal of this focus group is to understand the interhemispheric symmetry/asymmetry in geomagnetic fields and its effects on M-I coupling. Observational and modeling studies have shown the interhemispheric differences which are manifested in various signatures, e.g., large-scale current systems, auroral forms, waves, ion upflow, outflow, particle precipitation, high-latitude convection and thermospheric winds. The focus group addresses questions as to how to incorporate interhemispheric differences and their effects on M-I coupling in observations and modeling/simulations. The overarching science questions that this focus group will be addressing are:<br />
# In what aspect does the asymmetry in geomagnetic fields play a role in M-I coupling?<br />
# How are the interhemispheric differences related to solar wind and geomagnetic activities?<br />
# What are interhemispheric differences in storm and substorm signatures, wave activity and particle precipitation? What controls these differences?<br />
# How do interhemispheric differences in ionospheric conductivity affect solar wind coupling to the magnetosphere, ionosphere and thermosphere? <br />
# What are effects of the neutral wind dynamo in the application of Ohm's law to ionosphere-magnetosphere coupling? Does the neutral wind dynamo contribute to the interhemispheric asymmetry in M-I coupling? <br />
<br />
<br />
== 2019 GEM Session Schedule ==<br />
'''Monday, June 22, 3:30 pm - 5:00 pm (Room: Lumpkins Ballroom)'''<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brain Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Tuesday, June 25, 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Testing_Proposed_Links_between_Mesoscale_Auroral_and_Polar_Cap_Dynamics_and_Substorms MAPS] session, Room: Lumpkins Ballroom)'''<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc) <br />
<br />
'''Wednesday (June 26) 10:30 am - 12:00 pm (joint session with the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications UMEA] and [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_Dayside_Kinetic_Processes_in_Global_Solar_Wind-Magnetosphere_Interaction DAYS] sessions, Room: Santa Fe )'''<br />
* 10:30-10:35 Tom Elsden: Session introduction and goals<br />
* 10:35-10:50 Ferdinand Plaschke: An overview of dayside transients causing ULF waves<br />
*10:50-11:00 Tom Elsden: 3D ULF wave modeling with MHD<br />
* 11:00-11:10 Boyi Wang: A statistical investigation of the role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves<br />
* 11:10-11:20 Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
* 11:20-11:30 Xueling Shi: Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* 11:30-11:40 Michael Hartinger: Localized magnetopause surface wave activity and modeling challenges<br />
* 11:40-12:00 Discussion: Tackle questions arising from talks as well as current and future science goals<br />
<br />
== 2018 Mini-GEM Schedule ==<br />
The session took place in Room 5 (Potomac) from 13:50-15:20, on Sunday December 9th at the Hilton Old Town Alexandria in Alexandria, Virginia (1767 King St, Alexandria, VA 22314). <br />
* James Weygand (UCLA): Hemispherically Conjugate Magnetometer Observations<br />
* Martin Connors (Athabasca U) : AUTUMNX Magnetometer Array: Conjugacy with GOES East, Antarctica, and Other Assets<br />
* Shin Ohtani (APL/JHU): The solar zenith angle dependence of the auroral electrojets<br />
* Astrid Maute (NCAR): Forcing the TIEGCM with interhemispheric different AMPERE field-aligned current <br />
* Xueling Shi (VT): Conjugate Observations of ULF Waves during an Extended Period of Radial IMF<br />
* Zhonghua Xu (VT): Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Dan Weimer (VT): A Quick Look at Results From the Antarctic 40 Degree Magnetic Meridian Chain<br />
<br />
<br />
== 2018 GEM Session Schedule ==<br />
There will be two sessions on Friday (June 22). Please note that the afternoon session is a joint session with the focus group “3D Ionospheric Electrodynamics and its impact on MIT coupling (IEMIT)”. <br />
<br />
This year, we are encouraging more discussion and discouraging AGU-style presentations, limiting each talk to 3-4 slides focused on results and outstanding questions. If you are interested in presenting interhemispheric studies, please use this signup form at: [[https://docs.google.com/forms/d/e/1FAIpQLSfG9PTUiB79hFRnmy_IZez-bk6-uzrMpkJOxNcqFk4AS-D9jw/viewform?usp=sf_link| Google Form]].<br />
<br />
Please also note that there will be GEM-CEDAR joint sessions on Saturday (June 23). The second session from 10:30 to 12:00 will cover "Interhemispheric Processes/Symmetries/Asymmetries". <br />
<br />
'''Friday, June 22, 10:30-12:00'''<br />
* Michael Hartinger: Inter-hemispheric comparisons of current systems with different temporal and spatial scales<br />
* Kristian Snekvik: Why we no longer believe tail reconnection is important for inducing B_Y in the nightside magnetosphere <br />
* Jim LaBelle: How conjugate auroral radio emission observations can contribute to understanding hemispheric asymmetries<br />
* Robert McPherron and James Weygand: Conjugate Delays Using Correlation and Wave Analysis<br />
* Yining Shi: Modes of Field-aligned Currents (FACs) Variability and Their Hemispheric Asymmetry Revealed by Inverse and Assimilative Analysis of Iridium Magnetometer Data<br />
* Shin Ohtani: Local vs. global interhemispheric (seasonal) differences of FACs and precipitation<br />
* Tetsuo Motoba, Asymmetric evolution of interhemispheric conjugate preonset aurora<br />
<br />
'''Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)'''<br />
<br />
10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [[http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2018_GEM_Workshop_-_updated_on_Jun_18.2C_2018?usp=sf_link| IEMIT]].<br />
<br />
*Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian<br />
*Denny Oliveira: GIC induced by interplanetary planetary shocks<br />
*Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations<br />
*Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results<br />
*Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement<br />
*Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere<br />
*Open discussions and walk-in presentations</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=2019_GEM-CEDAR_Joint_Workshop_and_GEM_Workshop&diff=44892019 GEM-CEDAR Joint Workshop and GEM Workshop2019-06-24T12:34:39Z<p>Hyominkim: /* [FG] IHMIC */</p>
<hr />
<div>'''Detailed Schedule'''<br />
<br />
Below is a detailed session schedule for the 2019 GEM Summer Workshop. The schedule of the Joint GEM-CEDAR Workshop on June 22 can be found in the [https://docs.google.com/document/d/13tgjUAhRmpw7kK1W08p7ntRbYQhURdlAVB3JSH1MN-I/edit?usp=sharing Google Doc]. <br />
<br />
In this page, the tentative speakers and titles in Focus Group sessions are provided by Focus Group Leaders, and other information is taken from the [https://gemworkshop.org/ Workshop Coordinator Website]. Due to the dynamic nature of the Workshop, Focus Groups may continue to revise their session agenda as needed.<br />
<br />
'''Poster Sessions''' will be held during 17:00 - 20:00 on Tuesday and Thursday. Poster titles can be found in the [https://gemworkshop.org/pages/gem2019/2019_GEM_poster_0613.pdf Poster Information] page at the Workshop Coordinator website.<br />
<br />
All other information about the 2019 GEM Summer Workshop can be found at the [https://gemworkshop.org/ GEM Workshop Coordinator website].<br />
<br />
== Monday, June 24 ==<br />
<br />
=== 0830-1000: Plenary Session ===<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
* '''Welcome/Intro''': ''J. Bortnik, P. Cassak, R. Millan''<br />
<br />
* '''RA MIC Tutorial''': ''W. Li''<br />
<br />
* '''RAC SWMI Tutorial''': ''K. Goodrich''<br />
<br />
* '''NSF REU Program''': ''D. Baker''<br />
<br />
=== 1030-1200: Splinter Sessions ===<br />
<br />
==== [FG] IEMIT ====<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
# Olga Verkhoglyadova: Summary of CEDAR MIT coupling efforts<br />
# Hyunju Connor: Relation between reconnection and cross polar cap potential during the sudden enhancement of solar wind pressure; SMILE mission for the MIT coupling study.<br />
# Doga Ozturk: What is the role of meso-scale electric fields in M-I-T Coupling?<br />
# Kevin Pham: CMIT model<br />
# Dong Wei: The magnetospheric driving source of double-peak subauroral ion drifts (DSAIDs): Double ring current pressure peak<br />
# Qianli Ma: diffusion coefficients due to chorus waves and electron precipitation features<br />
# Dmytro Sydorenko: Development of a photoelectron effects module for a comprehensive model of coupled ionosphere and magnetosphere<br />
# Zihan Wang: SED segmentation due to boundary flows<br />
<br />
==== [FG] MMV ====<br />
<br />
Location: New Mexico<br />
<br />
Natalia Ganjushkina - ''Metrics for Minute-Scale Variations of keV Electrons in the Inner Magnetosphere'' <br><br />
Adam Kellerman - ''Validation of 3D electron radiation belt modeling using in situ measurements: Implemented at the CCMC'' <br><br />
Lutz Rastaetter - ''CCMC update + 2D validation and 2D to 1D timeline validation'' <br><br />
Katherine Garcia-Sage - ''Focus group update and planning'' <br><br />
<br />
==== [FG] BSH ====<br />
Location: Santa Fe<br />
<br />
# Steve Schwartz (Tutorial on quasi-potential fields in shocks)<br />
# Li-Jen Chen (Quasi-potential fields or not: MMS perspectives)<br />
# Jonathan Ng (Simulations of microinstabilities leading to electron heating at the bow shock)<br />
# Shan Wang (Reconnection in the shock transition region)<br />
<br />
=== 1200 - 1230: LWS Discussion ===<br />
<br />
Location: New Mexico<br />
<br />
=== 1330-1500: Splinter Sessions ===<br />
<br />
==== [FG] IEMIT ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
# Christine Garbrielse: Storm Time Mesoscale Plasma Flows in the Nightside High‐Latitude Ionosphere<br />
# Jiang Liu: SWARM & DMSP observations of the eastward plasma flows in the dawnside ionosphere and their comparison with THEMIS ASI observations.<br />
# Ying Zou: effects of substorms in high-latitude upper thermospheric winds<br />
# Sebastijan Mrak : Storm-time MI-coupling at mid-latitudes: Highly structured plasmapause boundary layer<br />
# Brian Anderson: Observed GIC Events in the Pacific Northwest and Corresponding Ionospheric Electrodynamics: Beyond Substorms as the Dominant Cause of GICs<br />
# Denny Oliveira: A historical finding of a sporadic aurora sighting in Rio de Janeiro, Brazil, on 15 Feb 1875<br />
# Colby Lemon: Role of ion precipitation in plasmasphere erosion<br />
# Naomi Maruyama: Cold plume plasma coupling between the magnetosphere, plasmasphere and ionosphere<br />
<br />
==== [FG] BSH ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
# Naoki Bessho (PIC simulations of shocks and reconnection)<br />
# Ilya Kuzichev (PIC simulation of the whistler heat flux instability in the interplanetary shocks)<br />
# Anton Artemyev (Nonlinear wave-particle interaction in application to bow shock physics)<br />
# Terry Liu (Particle acceleration by magnetosheath jet-driven bow waves)<br />
<br />
==== [Joint] TAIL/MMV ====<br />
<br />
Location: New Mexico room<br />
<br />
1. '''Natalia Ganjushkina''', "Magnetotail structure inferred from observations of isotropic boundaries at NOAA satellites and global MHD modeling"<br />
<br />
2. '''Modeling challenge''': An event (06-11 UT of 2017-07-09) will be presented and dicussed to understand the global response of the tail, from near-Earth to mid-tail, and the ionosphere to an IMF southward turning, and an IMF northward turning. This is an midnight conjunction of ERG (r < 5), GOES, Geotail (X = -11), MMS (X = -23), and ARTEMIS (X = -63). The observations will be compared with the BATS-R-US, OpenGGCM, and LFM runs conducted on NASA CCMC. The global models will be compared with ionosphere observations/empirical models, including SuperDARN, Ovation Prime, AMPERE, equivalent current, and ground magnetometers.<br />
<br />
Tail (Chih-Ping Wang)<br />
<br />
SuperDARN (Xueling Shi)<br />
<br />
Ovation Prime (Betsey Mitchell)<br />
<br />
AMPERE (Brian Anderson, Sarah Vines)<br />
<br />
Spheric elementary current (James Weygand)<br />
<br />
==== [FG] GBMAB ====<br />
<br />
Location: Santa Fe<br />
*Mike Hartinger - Updates on ground magnetometer advisory board activities<br />
*Mark Engebretson - Summary of information gathering report<br />
*Lisa Winter - NSF updates<br />
*Hyomin Kim - DRUM/DASI updates and future plans, discussion<br />
*Jesper Gjerloev - SuperMAG updates<br />
*Josh Rigler - USGS updates, updates from other magnetometer arrays<br />
<br />
=== 1530-1700: Splinter Sessions ===<br />
<br />
==== [FG] IHMIC ====<br />
<br />
Location: Lumpkins Ballroom North<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brian Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Asymmetric SC/Pc5 amplitudes at the Syowa–Iceland conjugate pair<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc)<br />
<br />
==== [FG] RX ====<br />
<b>Local and Kinetic Physics of Reconnection</b><br><br />
Location: Lumpkins Ballroom South<br><br />
1. Binbin Tang – Crescent shaped electron distributions at the non-reconnecting magnetopause <br><br />
2. Jason Shuster – MMS measurements of the Vlasov Equation <br><br />
3. Yi-Hsin Liu – The Dawn-Dusk asymmetry at Earth vs. Mercury <br><br />
4. Lijen Chen – Electron dynamics driven by nonlinear waves in a guide-field reconnection layer <br><br />
5. Jonatahn Ng – Three dimensional instabilities in the symmetric reconnection layer with a moderate guide field. <br><br />
6. Rick Wilder - Open discussion on potential challenges!<br />
<br />
==== [Joint] UMEA/MMV ====<br />
<br />
Location: New Mexico<br />
*Mike Hartinger, FG updates<br />
*Jesper Gjerloev, SuperMAG ULF updates<br />
*Tetsuo Motoba, High-time resolution SuperMAG ULF data products<br />
*Lutz Rastaetter, ULF wave modeling challenge<br />
*Maulik Patel, MHD test particle simulations of the 16 July 2017 shock compression of the dayside magnetopause <br />
*Bob McPherron, Pi 2 pulsations during the storm of May 27-29 2017, The Statistics of Pi 2 Pulsation Occurrence during a Major Magnetic Storm<br />
*Dong Lin, LFM simulations of surface waves during challenge event<br />
<br />
==== Python ====<br />
<br />
Location: Santa Fe<br />
<br />
=== 1700-1800: Town Hall - Decadal midterm assessment ===<br />
<br />
<br />
== Tuesday, June 25 ==<br />
<br />
=== 0830-1000: Plenary Session ===<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
'''Agency Talks'''<br />
<br />
* NSF GS: M. Wiltberger<br />
* NSF GEO: L. Winter<br />
* NASA: M. Kessel<br />
* NOAA: H. Singer<br />
* Air Force: J. McCollough<br />
* CSSP: H. Singer, T. Pulkkinen<br />
<br />
=== 1030-1200: Splinter Sessions ===<br />
<br />
==== [Joint] IHMIC/MAPS ====<br />
<br />
Location: Lumpkins Ballroom<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc)<br />
<br />
==== [FG] RB ====<br />
<br />
Location: New Mexico<br />
<br />
1. Chairs: Introduction of New Focus Group<br />
<br />
2. Seth Claudepierre: Recent Advances and Open Questions in Radiation Belt Studies<br />
<br />
3. Wen Li: Review and Challenges of Multi-Point Measurements to Radiation Belt Modeling<br />
<br />
4. Open Discussions<br />
<br />
==== [FG] RX ====<br />
<b>Local and Kinetic Physics of Reconnection</b><br><br />
Location: Santa Fe Room<br><br />
1. Misha Sitnov – Kinetic dissipation in magnetotail reconnection <br><br />
2. Stefan Eriksson – Nascent flux rope observations at the earth’s dayside magnetopause <br><br />
3. Marty Goldman – Multibeam energy transport <br><br />
4. David Newman – Kinetic Current Sheet Equilibria with Agyrotropic Electron Crescent Populations <br><br />
5. Sanni Hoilijoki – Electron-scale Magnetic Structure Observed Adjacent to the EDR at the Dayside Magnetopause <br><br />
6. Daniel Graham - Lower hybrid waves and reconnection <br><br />
<br />
=== 1200 - 1230: CCMC Report ===<br />
<br />
Location: New Mexico<br />
<br />
=== 1330-1500: Splinter Sessions ===<br />
<br />
==== [FG] M3-I2 ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
in collaboration with DIPS and MMV groups<br />
*Chair: Rick Chappell -- Scribe: Barbara Giles<br />
#'''Rick Chappell, Focus Group co-Chair:''' Overview and Updates <br />
#'''Invited: Daniel Welling:''' A Three Fluid Approach to Comprehensive Outflow Modeling<br />
#'''Invited: George Khazanov:''' The Electrostatic Potential Jumps Over the Sunlit Polar Cap Region <br />
#'''Invited: Katie Garcia-Sage:''' title tbd<br />
#'''Invited: Matina Gkioulidou:''' O+ circulation within the M-I coupled system<br />
#'''Matthew Huddleston:''' Ion Trajectories Connecting the Ionosphere to the Magnetosphere<br />
#'''Chih-Ping Wang:'''Magnetospheric Drivers for Ion Upflow and Outflow within Quiet-time Plasma Sheet: MMS and DMSP Observation<br />
<br><br />
<br />
==== [FG] RB ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
<br />
<br />
1. Precipitation Conjunction Events<br />
<br />
Mykhaylo Shumko and Ashley Greeley: Precipitation Conjunction Events Overview<br />
<br />
Nithin Sivadas: Optical Signatures of the Radiation Belt Boundary<br />
<br />
Wen Li: Direct Observation of Sub-Relativistic Electron Precipitation Driven by EMIC Waves<br />
<br />
Questions and Discussions<br />
<br />
<br />
2. Close Conjunction Events<br />
<br />
Drew Turner and Ian Cohen: Close Conjunction Events between Van Allen Probes, MMS, and ARASE<br />
<br />
Justin Lee: EMIC wave activity during MMS-RBSP Close Conjunctions<br />
<br />
Questions and Discussions<br />
<br />
<br />
3. General Contributions: Radiation Belt Particles<br />
<br />
Geoff Reeves: Identifying the Magnitude and Occurrence Frequency of Radiation Belt Enhancement Events<br />
<br />
Maulik Patel: Simulations using LFM and Test Particle Code to Reproduce Drift Echoes<br />
<br />
Seth Claudiepierre: Electron Lifetimes from RBSP Observations and Comparison with Theoretical Estimates due to Pitch Angle Diffusion by Various Wave Modes<br />
<br />
Sasha Drozdov: Depletion of Multi-MeV Electrons<br />
<br />
Questions and Discussions<br />
<br />
==== [FG] RX ====<br />
<b>Local and Kinetic Physics of Reconnection</b><br><br />
Location: New Mexico Room<br><br />
1. Rick Wilder – A survey of plasma waves associated with asymmetric EDR events <br><br />
2. Wenya Li (Presented by Daniel Graham) – Electron Bernstein waves driven by electron crescents near the electron diffusion region. <br><br />
3. San Lu – Turbulence and particle acceleration in magnetic reconnection obtained from PIC simulations. <br><br />
4. Pryash Sharma Pyakurel – 3D electron-only reconnection <br><br />
5. Matt Argall – Observations of kinetic entropy in the diffusion region of magnetic reconnection. <br><br />
6. Blake Wetherton – Scaling of electron-scale heating in the exhausts of guide-field reconnection events. <br><br />
<br />
==== [Joint] MMS: Turbulence ====<br />
<br />
Location: Santa Fe<br />
<br />
=== 1530-1700: Splinter Sessions ===<br />
<br />
==== [FG] M3-I2 ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
*Chair: Barbara Giles -- Scribe: Rick Chappell<br />
#'''Invited: Roger Varney:''' title tbd<br />
#'''Invited: Naritoshi Kitamura:''' Solar Zenith Angle Dependence of Relationship Between Energy Inputs to the Ionosphere and Ion Outflow Fluxes<br />
#'''Jonathan Krall:''' SAMI2 simulation of counterstreaming H+ outflows during refilling<br />
#'''Meghan Burleigh:''' Transient ionospheric upflow driven by PMAFs observed during the RENU2 sounding rocket campaign<br />
#'''Chao Yue (UCLA):''' Unexpected field-aligned PAD of energetic ions in the ring current region<br />
#'''Mei-Yun Lin:''' Nitrogen Outflow in the Polar Wind Outflow Model (PWOM)<br />
#'''Chu Xiangning:''''Identifying the Magnetospheric Driver of STEVE'<br />
<br />
==== [Joint] MMV/IEMIT ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
# Overview from the CEDAR conductance challenge on the 17 Mar 2013 storm<br />
# Shin Ohtani: Solar zenith angle dependence of the auroral electrojets and its impact on conductance.<br />
# Toshi Nishimura: Ionospheric conductance observations of the 17 March 2013 event<br />
# Doga Ozturk: GTIM empirical results.<br />
# Gang Lu: AMIE results on the 17 Mar 2013 storm<br />
# Bob Robinson: The 17 Mar 2013 storm results from a new empirical ionospheric electrodynamics model <br />
# Hyunju Connor: OpenGGCM results on the 17 Mar 2013 storm<br />
# Kevin Pham: CMIT-IPWM results on the 17 Mar 2013 storm<br />
# Agnit Mukhopadhya: BATSRUS results on the 17 Mar 2013 storm<br />
# Magaret Chen: Magnetosphere-Ionosphere Electron Precipitation Dynamics and Conductance during the 17 March 2013 Storm<br />
<br />
See session description at the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2019_GEM_Workshop_-_updated_on_Jun_17.2C_2019 FG page].<br />
<br />
==== [FG] DIP ====<br />
<br />
'''Location: New Mexico'''<br />
<br>Point-of-contact: Christine Gabrielse (cgabrielse@ucla.edu)<br />
<br>Co-chairs: Matina Gkioulidou, David Malaspina<br />
<br />
'''Topic: Particle Energization/Injection''' <br />
<br />
* '''Jianghuai Liu''' - The role of inductive electric fields on particle energization <br><br />
* '''Raluca Ilie''' - The role of inductive electric fields on particle energization (con'd)<br><br />
* '''Sam Bingham''' - Adiabatic Particle Energization using MMS <br><br />
* '''Wonde Eshetu''' - Simulations of electron energization and injection by BBFs using High-Resolution LFM MHD fields <br><br />
* '''Christine Gabrielse''' - Heliophysics System Observatory observations of small and large-scale injections: DFBs vs. large-scale dipolarization <br><br />
* '''Bob McPherron''' - MHD simulation of substorm including progressive approach of X-lines, flow channels, and flow penetration to the inner plasma sheet <br><br />
* '''Tetsuo Motoba''' - Azimuthally localized dispersionless injections inside GEO <br><br><br />
* '''Discussion on Particle Energization/Injection''' <br><br />
** ''Role of different fields?'' <br><br />
** ''Large vs. Small-scale?'' <br><br />
** ''This discussion will be inspired by the main points and questions presented.''<br><br />
<br><br />
<br><br />
<br><br />
<br />
==== [Joint] MMS: Turbulence ====<br />
<br />
Location: Santa Fe<br />
<br />
=== 1700-2000: Poster Session ===<br />
<br />
Please visit the [https://gemworkshop.org/pages/gem2019/2019_GEM_poster_0613.pdf Poster Information] page for details.<br />
<br />
<br />
== Wednesday, June 26 ==<br />
<br />
=== 0830-1000: Plenary Session ===<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
* '''RA GSM Tutorial''': ''J. Burch''<br />
<br />
* '''MMV Tutorial''': ''K. Garcia-Sage''<br />
<br />
=== 1030-1200: Splinter Sessions ===<br />
<br />
==== [FG] M3-I2 ====<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
Joint with the MMS Science Working Team<br />
*Chair: Barbara Giles -- Scribe: Rick Chappell<br />
#'''Invited: Lynn Kistler:''' Investigating Sources of Plasma Sheet Plasma<br />
#'''Invited: Stephen Fuselier:''' O+ in the Outer Magnetosphere: Effect on Magnetic Reconnection at the Magnetopause<br />
#'''Naritoshi Kitamura:''' O+ Measurements by MMS Around the Near-Earth Plasma Sheet Boundary<br />
#'''Li-Jen Chen:''' Can energetic O+ outflows preceding superstorms participate in the ring current directly? <br />
#'''Christopher Mouikis:''' title soon to be supplied<br />
#'''Justin Lee:''' MMS Measurements of Low-energy Plasma Composition and its Effects on EMIC Waves<br />
#'''Andrei Runov:''' THEMIS observations of ionospheric oxygen outflow during the substorm growth phase<br />
<br />
<br><br />
<br />
<h2>Session 1: Tuesday 1:30PM - Room tbd - Ionosphere/Magnetosphere Merged Models as a Context for the Observations</h2><br />
in collaboration with DIPS and MMV groups<br />
*Chair: Rick Chappell -- Scribe: Barbara Giles<br />
#'''Rick Chappell, Focus Group co-Chair:''' Overview and Updates <br />
#'''Invited: Daniel Welling:''' A Three Fluid Approach to Comprehensive Outflow Modeling<br />
#'''George Khazanov:''' The Electrostatic Potential Jumps Over the Sunlit Polar Cap Region <br />
#'''Invited: Katie Garcia-Sage:''' title tbd<br />
#'''Invited: Matina Gkioulidou:''' O+ circulation within the M-I coupled system<br />
#'''Matthew Huddleston:''' Ion Trajectories Connecting the Ionosphere to the Magnetosphere<br />
#additional participants welcome! you are welcome to add your contribution here or to email barbara.giles@nasa.gov and rick.chappell@vanderbilt.edu<br />
<br><br />
<br />
==== [FG] MAPS ====<br />
<br />
Location: New Mexico<br />
<br />
General substorm session<br />
* '''Kyle Murphy''' Tracking pre-onset aurora<br />
* '''Toshi Nishimura''' Tracking pre-onset aurora<br />
* '''Bea Gallardo-Lacourt (by Murphy)''' Tracking pre-onset aurora<br />
* '''Jiang Liu''' Ionosphere flows during substorms<br />
* '''Larry Lyons''' Substorm precursors and expansion phase activity<br />
* '''Nithin Sivadas''' Energetic electron precipitation<br />
<br><br />
<br />
==== [Joint] UMEA/DAYS/IHMIC ====<br />
<br />
Location: Santa Fe<br />
<br />
* Tom Elsden - ''Session introduction and goals''<br />
<br />
* Ferdinand Plaschke - ''An overview of dayside transients causing ULF waves''<br />
<br />
* Tom Elsden - ''3D ULF wave modeling with MHD''<br />
<br />
* Boyi Wang - ''The role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves''<br />
<br />
* Bob Lysak - ''Ionospheric asymmetries and quarter-wave modes''<br />
<br />
* Xueling Shi - ''Conjugate Observations of ULF Waves during an Extended Period of Radial IMF''<br />
<br />
* Michael Hartinger - ''Localized magnetopause surface wave activity and modeling challenges''<br />
<br />
* Discussion<br />
<br />
=== 1200 - 1230: URM Event ===<br />
<br />
Location: New Mexico<br />
<br />
=== 1330-1500: Splinter Sessions ===<br />
<br />
==== [FG] M3-I2 ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
*Chair: Rick Chappell -- Scribe: Barbara Giles<br />
#'''Andrew Yau: e-POP Ion Composition Observations of Topside Ion Upflows: Storm Challenge Events 1 and 2 and Statistical Study of Other Storms in 2014-2017<br />
#'''Barbara Giles:''' Access to Polar TIDE outflow data base, new tools, new data products<br />
#'''Rick Chappell:''' Summary of Progess: <br />
#'''Discussion on the Storm Challenges<br />
#Additional participants welcome! Email barbara.giles@nasa.gov and rick.chappell@vanderbilt.edu<br />
<br />
==== [Joint] DAYS/BSH ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
* Andrew Dimmock - ''Introduction''<br />
<br />
* Ian Cohen - ''High-resolution measurements of the cross-shock potential, ion reflection, and electron heating at an interplanetary shock by MMS''<br />
<br />
* Xin An - ''Formation of foreshock transients and associated secondary shocks''<br />
<br />
* Yann Pfau-Kempf - ''Transmission of foreshock ULF waves to the magnetosheath''<br />
<br />
* Misha Balikhin - ''Nonstationarity of the quasi-perpendicular bow shock''<br />
<br />
* Heli Hietala - ''Global 3D hybrid simulations of magnetosheath jets''<br />
<br />
* Terry Liu - ''Statistical study of magnetosheath jet-driven bow waves''<br />
<br />
==== [FG] DIP ====<br />
<br />
'''Location: New Mexico'''<br />
<br>Point-of-contact: Christine Gabrielse (cgabrielse@ucla.edu)<br />
<br>Co-chairs: Matina Gkioulidou, David Malaspina<br />
<br />
'''Topic: Energy Transfer and Dissipation''' <br />
* '''Xiangning Chu''' - The generation of STEVE and penetration of fast flows to the plasmapause<br />
* '''Misha Sitnov''' - Kinetic dissipation in dipolarization fronts and magnetic reconnection<br />
* '''Rumi Nakamura''' - MMS observations of multi-scale field-aligned currents during dipolarization in the near-Earth plasma sheet<br />
* '''Amy Keesee''' - Concurrent enhancements in ion temperatures and auroral brightenings seen by TWINS and ASIs <br />
* '''Joachim Birn''' - Energy release and conversion and dynamo action in the tail on the basis of MHD simulation <br><br />
* '''Shin Ohtani''' - Dissipation and the ionosphere<br />
<br />
* '''Discussion on energy dissipation'''<br />
** Can we estimate a percentage that energy is dissipated into waves, direct ion heating, etc.? <br />
** Can we determine if and to what extent a dynamo in the transition region (driven by pressure gradients or vorticity) converts energy dissipated from the tail into field aligned currents to drive dissipation in the ionosphere? <br />
** What are the ways to estimate these values (simulation or theory or observational)?<br />
<br><br />
<br><br />
<br><br />
<br />
=== 1530-1700: Splinter Sessions ===<br />
<br />
==== [FG] DIP ====<br />
<br />
'''Location: Lumpkins Ballroom North'''<br />
<br>Point-of-contact: Christine Gabrielse (cgabrielse@ucla.edu)<br />
<br>Co-chairs: Matina Gkioulidou, David Malaspina<br />
<br />
'''Topic: Currents and Focus Group Discussion'''<br />
* '''Continue discussion from previous session (limit to 30 min)'''<br />
* '''Misha Sitnov''' - Dipolarizations and their connection to the ring current buildup and magnetic reconnection<br />
* '''Shin Ohtani''' - Double-wedge current system based on the GOES-RBSP comparison of dipolarization signatures<br />
* '''Yi-Hsin Liu''' - An explanation of the opposite dawn-dusk asymmetry at magnetotails of Earth vs. Mercury<br />
* '''Olivier Le Contel(?)''' - Quasi-parallel ion flow and energetic particles in PSBL indicating acceleration region farther downtail<br><br />
<br />
* '''Continue discussion from previous sessions''' <br />
** Updates from mini-GEM discussion? <br />
** Future planning: Community Input<br />
<br><br />
<br><br />
<br><br />
<br />
==== [Joint] UMEA/IEMIT ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
# (Invited) Boyi Wang: Ionospheric modulation by Pc5 ULF waves and wave structure detected by PFISR<br />
# (Invited) Xiaojia Zhang / Anton Artemyev: ULF modulation of VLF waves and precipitation<br />
# Doga Ozturk: Update from GEM/CEDAR joint session, PFISR E/ground magnetometer comparisons<br />
# Anatoly Streltsov: ULF waves generated by the MI interactions near the plasmapause<br />
# Mergen Aligabetov: ULF waves observed in space and on the ground at high and low latitudes<br />
# Mark Engebretson: Multi-Instrument Observations of Nighttime Impulsive Magnetic Events<br />
# Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
# Yan Song: ULF wave, M-I coupling and Auroral formation.<br />
<br />
==== [Joint] MMS: Bowshock ====<br />
<br />
Location: New Mexico<br />
<br />
==== [Joint] MMS: Inner M'sphere ====<br />
<br />
Location: Santa Fe<br />
<br />
<br />
== Thursday, June 27 ==<br />
<br />
=== 0830-1000: Plenary Session ===<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
* '''RA MPS Tutorial''': ''A. Runov''<br />
<br />
* '''RA IMAG Tutorial''': ''H. Zhao''<br />
<br />
* '''Mission/Modeling''': ''M. Gkioulidou, T. Nishimura''<br />
<br />
=== 1030-1200: Splinter Sessions ===<br />
<br />
==== [FG] Rx ====<br />
<b>Local and Kinetic Physics of Reconnection</b><br><br />
Location: Lumpkins Ballroom<br><br />
1. Anton Artemyev – MMS, Artemis and optic observations of the magnetotail reconnection <br><br />
2. Misha Sitnov – Global context of magnetotail reconnection and the global topology of the magnetic field during the July 11 2017 EDR event. <br><br />
3. Narges Ahmadi – Turbulence in magnetotail reconnection <br><br />
4. Chih-Ping Wang – Simultaneous earthward and tailward busty flows observed by the two ARTEMIS in mid-tail (60 Re) and comparisons with PIC simulations. <br><br />
5. Chris Bard - Hall MHD effects on tail reconnection for a Earth-like, miniature magnetosphere. <br><br />
6. Olivier Le Contel - Electron holes in the plasma sheet - related to reconnection? <br><br />
<br />
==== [Joint] UMEA/RB ====<br />
<br />
Location: New Mexico<br />
*Robert Allen, Outer magnetospheric EMIC wave source regions characterized by Cluster<br />
*Sarah Vines, EMIC waves in the outer magnetosphere: Observations of an off-equator source region<br />
*Justin Lee, EMIC wave observations by MMS<br />
*Chao Yue, The relationship between EMIC wave properties and proton distributions based on Van Allen Probes observations<br />
*Kristine Sigsbee, Simultaneous EMIC Wave Observations During a Van Allen Probes Conjunction<br />
*Hyomin Kim, Observations of Particle Loss due to Injection-Associated EMIC Waves<br />
*Yuri Shprits, Dips in PSD and how they are related to EMIC wave scattering<br />
*Richard Denton, Electromagnetic ion cyclotron waves in the dipole magnetosphere and pitch angle scattering of sub-MeV relativistic electrons by those waves<br />
*Qianli Ma, Pitch angle scattering of radiation belt electrons due to statistical EMIC wave spectra<br />
<br />
==== SPEDAS ====<br />
<br />
Location: Santa Fe<br />
<br />
=== 1330-1500: Splinter Sessions ===<br />
<br />
==== [Joint] MAPS/DIP ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
==== [Joint] RX/DAYS ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
* Katariina Nykyri - ''MMS observations of the formation and properties of high-latitude diamagnetic cavities''<br />
<br />
* Brian Walsh - ''Cubesat mission to study magnetic reconnection''<br />
<br />
* Xuanye Ma - ''Comparison between fluid simulation with test particles and hybrid simulation for the Kelvin-Helmholtz instability''<br />
<br />
* Karlheinz Trattner - ''Elongated Dayside X-lines''<br />
<br />
* Marcos Sylveira - ''Flux transfer events observed in the dayside magnetopause by MMS mission''<br />
<br />
* Andrew Dimmock - ''The SMILE SXI instrument: a global imager for solar wind - dayside interactions''<br />
<br />
==== [FG] UMEA ====<br />
<br />
Location: New Mexico<br />
*Matina Gkioulidou/Seth Claudepierre, RBSP HGSO coordination<br />
*Sarah Vines, Determining EMIC wave vector properties through multi-point measurements: The wave curl analysis<br />
*Larry Kepko, Solar wind driven ULF waves<br />
*Aaron Breneman, BARREL precipitation during solar wind driven ULF wave events<br />
*Anatoly Streltsov, Effect of the Hall Conductivity on the generation of ULF waves<br />
*Mohammad Barani, Estimating the Azimuthal Mode Structure of ULF Waves Based on Multiple GOES Satellite Observations <br />
*Kazue Takahashi, L versus time structures of ground magnetic pulsations<br />
*Chih-Ping Wang, Earthward propagation of Pi2 waves<br />
<br />
=== 1530-1700: Splinter Sessions ===<br />
<br />
==== [FG] TAIL ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
<br />
1.'''Anton Artemyev,''' Multicomponent ion population in the magnetotail <br />
<br />
2. '''Sasha Lukin (presented by Anton),''' Plasma populations around the distant equatorial magnetopause: indication on selective mechanism of ion and electron transport<br />
<br />
2. '''Olivier Le Contel,''' MMS/cluster joint observations during PSBL crossings<br />
<br />
3. '''Jiang Liu,''' Field-aligned current carriers in the magnetotail<br />
<br />
4. '''Steve Xu,''' Statistics of current sheets at lunar distance<br />
<br />
5. '''San Lu,''' Reconnection in polarized thin current sheet <br />
<br />
6. '''Chih-Ping Wang,''' Firehose instability within the recoonection exhaust observed in mid-tail<br />
<br />
==== [FG] UMEA ====<br />
<br />
Location: Lumpkins Ballroom South<br />
*Xuzhi Zhou, Acceleration of relativistic electrons by global-scale ULF waves<br />
*Tomotsugu Yamakawa, Simulation of the excitation of storm-time Pc5 ULF waves by ring current ions based on the drift-kinetic model<br />
*Frank Toffoletto, Buoyancy Waves (TBD) <br />
*Peter Chi, Observations of High-m Poloidal Waves along Magnetospheric Field Lines<br />
*Mike Hartinger, Observations of wave-particle interactions using MagEIS ultra-high resolution energy channels<br />
*Jiang Liu, Ultralow Frequency Waves Deep Inside the Inner Magnetosphere Driven by Dipolarizing Flux Bundles, and their interaction with electrons<br />
<br />
==== [Joint] MMS: SPEDAS ====<br />
<br />
Location: New Mexico<br />
<br />
==== [Joint] DAYS/MMV ====<br />
<br />
Location: Santa Fe<br />
<br />
* Heli Hietala - ''Challenge progress summary''<br />
<br />
* Sarah Vines - ''MMS observations during southward IMF: recap and update''<br />
<br />
* Karlheinz Trattner - ''Maximum shear model results''<br />
<br />
* Zhifang Guo - ''Global 3D hybrid simulation results''<br />
<br />
* Marcos Silveira - Magnetopause transients seen in the challenge event: MMS vs MHD-EPIC comparison<br />
<br />
* Discussion - including Special Issue manuscript coordination<br />
<br />
=== 1700-2000: Poster Session ===<br />
<br />
Please visit the [https://gemworkshop.org/pages/gem2019/2019_GEM_poster_0613.pdf Poster Information] page for details.<br />
<br />
<br />
== Friday, June 28 ==<br />
<br />
=== 0830-1000: Plenary Session ===<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
* '''Students Awards, Student Invited Tutorial''': ''M. Argall''<br />
<br />
* '''Mission/Modeling''': ''J. Sample''<br />
<br />
=== 1030-1200: Splinter Sessions ===<br />
<br />
==== [FG] TAIL ====<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
This is the final year for Tail Environment FG, we will summary the major findings from this FG. We will discuss how we will proceed to maintain the discussion platform for the magnetotail physics in GEM community, including a proposal for a new FG.<br />
<br />
==== [FG] RB ====<br />
<br />
Location: New Mexico<br />
<br />
<br />
1. General Contributions: Inner Belt and Slot Region<br />
<br />
Xinlin Li: Source and Loss of Inner Belt Protons (10s of MeV) and Their Solar Cycle Variations Based on Multi-Point Measurements and Analysis<br />
<br />
Zheng Xiang: On Trapped Electron Dynamics in Earth's Inner Radiation Belt due to Atmospheric Scattering Loss and Cosmic Ray Albedo Neutron Decay (CRAND) as the Source<br />
<br />
Man Hua: Modeling Electron Acceleration and Butterfly Pitch Angle Distributions in the Earth's Inner Radiation Belt and Slot Region<br />
<br />
Questions and Discussions<br />
<br />
<br />
2. General Contributions: Radiation Belt Waves<br />
<br />
Dave Hartley: The Angular Distribution of Chorus Waves and the Role of Plumes in the Chorus-to-Hiss Mechanism<br />
<br />
Xin An: Nonlinear Wave Structures Driven by Whistler Waves<br />
<br />
Shangchun Teng: Typical Characteristics of Whistler Mode Waves Categorized by Their Spectral Properties Using Van Allen Probes Observations<br />
<br />
Homayon Aryan: Discrete Equatorial Magnetosonic Waves Observed by Cluster<br />
<br />
Oleksiy Agapitov: TBD<br />
<br />
Ivan Vasko: Electrostatic Steepening of Whistler Waves in the Radiation Belts<br />
<br />
Questions and Discussions<br />
<br />
<br />
3. General Contributions: Radiation Belt Modeling<br />
<br />
Anthony Chan: A New Technique for Radiation Belt Modeling: Theory<br />
<br />
Scot Elkington: A New Technique for Radiation Belt Modeling: Results<br />
<br />
Yihua Zheng: Model Validation<br />
<br />
Liheng Zheng: Drift shell bifurcation effects on radiation belt electrons modeled by Markov chain<br />
<br />
Questions and Discussions</div>Hyominkimhttps://gem.epss.ucla.edu/mediawiki/index.php?title=2019_GEM-CEDAR_Joint_Workshop_and_GEM_Workshop&diff=44872019 GEM-CEDAR Joint Workshop and GEM Workshop2019-06-24T04:14:12Z<p>Hyominkim: /* [FG] IHMIC */</p>
<hr />
<div>'''Detailed Schedule'''<br />
<br />
Below is a detailed session schedule for the 2019 GEM Summer Workshop. The schedule of the Joint GEM-CEDAR Workshop on June 22 can be found in the [https://docs.google.com/document/d/13tgjUAhRmpw7kK1W08p7ntRbYQhURdlAVB3JSH1MN-I/edit?usp=sharing Google Doc]. <br />
<br />
In this page, the tentative speakers and titles in Focus Group sessions are provided by Focus Group Leaders, and other information is taken from the [https://gemworkshop.org/ Workshop Coordinator Website]. Due to the dynamic nature of the Workshop, Focus Groups may continue to revise their session agenda as needed.<br />
<br />
'''Poster Sessions''' will be held during 17:00 - 20:00 on Tuesday and Thursday. Poster titles can be found in the [https://gemworkshop.org/pages/gem2019/2019_GEM_poster_0613.pdf Poster Information] page at the Workshop Coordinator website.<br />
<br />
All other information about the 2019 GEM Summer Workshop can be found at the [https://gemworkshop.org/ GEM Workshop Coordinator website].<br />
<br />
== Monday, June 24 ==<br />
<br />
=== 0830-1000: Plenary Session ===<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
* '''Welcome/Intro''': ''J. Bortnik, P. Cassak, R. Millan''<br />
<br />
* '''RA MIC Tutorial''': ''W. Li''<br />
<br />
* '''RAC SWMI Tutorial''': ''K. Goodrich''<br />
<br />
* '''NSF REU Program''': ''D. Baker''<br />
<br />
=== 1030-1200: Splinter Sessions ===<br />
<br />
==== [FG] IEMIT ====<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
# Olga Verkhoglyadova: Summary of CEDAR MIT coupling efforts<br />
# Hyunju Connor: Relation between reconnection and cross polar cap potential during the sudden enhancement of solar wind pressure; SMILE mission for the MIT coupling study.<br />
# Doga Ozturk: What is the role of meso-scale electric fields in M-I-T Coupling?<br />
# Kevin Pham: CMIT model<br />
# Dong Wei: The magnetospheric driving source of double-peak subauroral ion drifts (DSAIDs): Double ring current pressure peak<br />
# Qianli Ma: diffusion coefficients due to chorus waves and electron precipitation features<br />
# Dmytro Sydorenko: Development of a photoelectron effects module for a comprehensive model of coupled ionosphere and magnetosphere<br />
# Zihan Wang: SED segmentation due to boundary flows<br />
<br />
==== [FG] MMV ====<br />
<br />
Location: New Mexico<br />
<br />
Natalia Ganjushkina - ''Metrics for Minute-Scale Variations of keV Electrons in the Inner Magnetosphere'' <br><br />
Adam Kellerman - ''Validation of 3D electron radiation belt modeling using in situ measurements: Implemented at the CCMC'' <br><br />
Lutz Rastaetter - ''CCMC update + 2D validation and 2D to 1D timeline validation'' <br><br />
Katherine Garcia-Sage - ''Focus group update and planning'' <br><br />
<br />
==== [FG] BSH ====<br />
Location: Santa Fe<br />
<br />
# Steve Schwartz (Tutorial on quasi-potential fields in shocks)<br />
# Li-Jen Chen (Quasi-potential fields or not: MMS perspectives)<br />
# Jonathan Ng (Simulations of microinstabilities leading to electron heating at the bow shock)<br />
# Shan Wang (Reconnection in the shock transition region)<br />
<br />
=== 1200 - 1230: LWS Discussion ===<br />
<br />
Location: New Mexico<br />
<br />
=== 1330-1500: Splinter Sessions ===<br />
<br />
==== [FG] IEMIT ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
# Christine Garbrielse: Storm Time Mesoscale Plasma Flows in the Nightside High‐Latitude Ionosphere<br />
# Jiang Liu: SWARM & DMSP observations of the eastward plasma flows in the dawnside ionosphere and their comparison with THEMIS ASI observations.<br />
# Ying Zou: effects of substorms in high-latitude upper thermospheric winds<br />
# Sebastijan Mrak : Storm-time MI-coupling at mid-latitudes: Highly structured plasmapause boundary layer<br />
# Brian Anderson: Observed GIC Events in the Pacific Northwest and Corresponding Ionospheric Electrodynamics: Beyond Substorms as the Dominant Cause of GICs<br />
# Denny Oliveira: A historical finding of a sporadic aurora sighting in Rio de Janeiro, Brazil, on 15 Feb 1875<br />
# Colby Lemon: Role of ion precipitation in plasmasphere erosion<br />
# Naomi Maruyama: Cold plume plasma coupling between the magnetosphere, plasmasphere and ionosphere<br />
<br />
==== [FG] BSH ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
# Naoki Bessho (PIC simulations of shocks and reconnection)<br />
# Ilya Kuzichev (PIC simulation of the whistler heat flux instability in the interplanetary shocks)<br />
# Anton Artemyev (Nonlinear wave-particle interaction in application to bow shock physics)<br />
# Terry Liu (Particle acceleration by magnetosheath jet-driven bow waves)<br />
<br />
==== [Joint] TAIL/MMV ====<br />
<br />
Location: New Mexico room<br />
<br />
1. '''Natalia Ganjushkina''', "Magnetotail structure inferred from observations of isotropic boundaries at NOAA satellites and global MHD modeling"<br />
<br />
2. '''Modeling challenge''': An event (06-11 UT of 2017-07-09) will be presented and dicussed to understand the global response of the tail, from near-Earth to mid-tail, and the ionosphere to an IMF southward turning, and an IMF northward turning. This is an midnight conjunction of ERG (r < 5), GOES, Geotail (X = -11), MMS (X = -23), and ARTEMIS (X = -63). The observations will be compared with the BATS-R-US, OpenGGCM, and LFM runs conducted on NASA CCMC. The global models will be compared with ionosphere observations/empirical models, including SuperDARN, Ovation Prime, AMPERE, equivalent current, and ground magnetometers.<br />
<br />
Tail (Chih-Ping Wang)<br />
<br />
SuperDARN (Xueling Shi)<br />
<br />
Ovation Prime (Betsey Mitchell)<br />
<br />
AMPERE (Brian Anderson, Sarah Vines)<br />
<br />
Spheric elementary current (James Weygand)<br />
<br />
==== [FG] GBMAB ====<br />
<br />
Location: Santa Fe<br />
*Mike Hartinger - Updates on ground magnetometer advisory board activities<br />
*Mark Engebretson - Summary of information gathering report<br />
*Lisa Winter - NSF updates<br />
*Hyomin Kim - DRUM/DASI updates and future plans, discussion<br />
*Jesper Gjerloev - SuperMAG updates<br />
*Josh Rigler - USGS updates, updates from other magnetometer arrays<br />
<br />
=== 1530-1700: Splinter Sessions ===<br />
<br />
==== [FG] IHMIC ====<br />
<br />
Location: Lumpkins Ballroom North<br />
* Denny Oliveira: Asymmetric satellite orbital drag effects during magnetic storms<br />
* Zhonghua Xu: Inter-hemispheric asymmetries in the ground magnetic response to interplanetary shocks: The role of shock impact angle<br />
* Brian Anderson: Update on simultaneous northern and southern hemisphere measures of latitudes and intensities of Birkeland currents from AMPERE<br />
* Shini Ohtani: Dependence of the auroral electrojet intensity on the solar illumination and dipole tilt<br />
* Christine Gabrielse: The difference between meso-scale flow speeds between summer and winter hemispheres<br />
* Tetsuo Motoba: Interhemispheric behaviors during the ULF challenge event<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc)<br />
<br />
==== [FG] RX ====<br />
<b>Local and Kinetic Physics of Reconnection</b><br><br />
Location: Lumpkins Ballroom South<br><br />
1. Binbin Tang – Crescent shaped electron distributions at the non-reconnecting magnetopause <br><br />
2. Jason Shuster – MMS measurements of the Vlasov Equation <br><br />
3. Yi-Hsin Liu – The Dawn-Dusk asymmetry at Earth vs. Mercury <br><br />
4. Lijen Chen – Electron dynamics driven by nonlinear waves in a guide-field reconnection layer <br><br />
5. Jonatahn Ng – Three dimensional instabilities in the symmetric reconnection layer with a moderate guide field. <br><br />
6. Rick Wilder - Open discussion on potential challenges!<br />
<br />
==== [Joint] UMEA/MMV ====<br />
<br />
Location: New Mexico<br />
*Mike Hartinger, FG updates<br />
*Jesper Gjerloev, SuperMAG ULF updates<br />
*Tetsuo Motoba, High-time resolution SuperMAG ULF data products<br />
*Lutz Rastaetter, ULF wave modeling challenge<br />
*Maulik Patel, MHD test particle simulations of the 16 July 2017 shock compression of the dayside magnetopause <br />
*Bob McPherron, Pi 2 pulsations during the storm of May 27-29 2017, The Statistics of Pi 2 Pulsation Occurrence during a Major Magnetic Storm<br />
*Dong Lin, LFM simulations of surface waves during challenge event<br />
<br />
==== Python ====<br />
<br />
Location: Santa Fe<br />
<br />
=== 1700-1800: Town Hall - Decadal midterm assessment ===<br />
<br />
<br />
== Tuesday, June 25 ==<br />
<br />
=== 0830-1000: Plenary Session ===<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
'''Agency Talks'''<br />
<br />
* NSF GS: M. Wiltberger<br />
* NSF GEO: L. Winter<br />
* NASA: M. Kessel<br />
* NOAA: H. Singer<br />
* Air Force: J. McCollough<br />
* CSSP: H. Singer, T. Pulkkinen<br />
<br />
=== 1030-1200: Splinter Sessions ===<br />
<br />
==== [Joint] IHMIC/MAPS ====<br />
<br />
Location: Lumpkins Ballroom<br />
* Toshi Nishimura: Magnetospheric source and inter-hemispheric conjugacy of STEVE arc<br />
* Larry Lyons: Outstanding questions on the role of meso-scale flow channels in the coupled M-I system<br />
* Anders Ohma: How asymmetries in geospace evolve during increased tail reconnection<br />
* Mike Hartinger: Possible experiments/observational campaigns to explore IH asymmetries during the upcoming 2020/2021 southern hemisphere solar eclipses<br />
* Shane Coyle: An experimental approach to inter-hemispheric asymmetries in the ground magnetic response of magnetospheric ULF waves<br />
* Discussion on asymmetry issues and community input (campaign(s), future Antarctic project(s), etc)<br />
<br />
==== [FG] RB ====<br />
<br />
Location: New Mexico<br />
<br />
1. Chairs: Introduction of New Focus Group<br />
<br />
2. Seth Claudepierre: Recent Advances and Open Questions in Radiation Belt Studies<br />
<br />
3. Wen Li: Review and Challenges of Multi-Point Measurements to Radiation Belt Modeling<br />
<br />
4. Open Discussions<br />
<br />
==== [FG] RX ====<br />
<b>Local and Kinetic Physics of Reconnection</b><br><br />
Location: Santa Fe Room<br><br />
1. Misha Sitnov – Kinetic dissipation in magnetotail reconnection <br><br />
2. Stefan Eriksson – Nascent flux rope observations at the earth’s dayside magnetopause <br><br />
3. Marty Goldman – Multibeam energy transport <br><br />
4. David Newman – Kinetic Current Sheet Equilibria with Agyrotropic Electron Crescent Populations <br><br />
5. Sanni Hoilijoki – Electron-scale Magnetic Structure Observed Adjacent to the EDR at the Dayside Magnetopause <br><br />
6. Daniel Graham - Lower hybrid waves and reconnection <br><br />
<br />
=== 1200 - 1230: CCMC Report ===<br />
<br />
Location: New Mexico<br />
<br />
=== 1330-1500: Splinter Sessions ===<br />
<br />
==== [FG] M3-I2 ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
in collaboration with DIPS and MMV groups<br />
*Chair: Rick Chappell -- Scribe: Barbara Giles<br />
#'''Rick Chappell, Focus Group co-Chair:''' Overview and Updates <br />
#'''Invited: Daniel Welling:''' A Three Fluid Approach to Comprehensive Outflow Modeling<br />
#'''Invited: George Khazanov:''' The Electrostatic Potential Jumps Over the Sunlit Polar Cap Region <br />
#'''Invited: Katie Garcia-Sage:''' title tbd<br />
#'''Invited: Matina Gkioulidou:''' O+ circulation within the M-I coupled system<br />
#'''Matthew Huddleston:''' Ion Trajectories Connecting the Ionosphere to the Magnetosphere<br />
#'''Chih-Ping Wang:'''Magnetospheric Drivers for Ion Upflow and Outflow within Quiet-time Plasma Sheet: MMS and DMSP Observation<br />
<br><br />
<br />
==== [FG] RB ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
<br />
<br />
1. Precipitation Conjunction Events<br />
<br />
Mykhaylo Shumko and Ashley Greeley: Precipitation Conjunction Events Overview<br />
<br />
Nithin Sivadas: Optical Signatures of the Radiation Belt Boundary<br />
<br />
Wen Li: Direct Observation of Sub-Relativistic Electron Precipitation Driven by EMIC Waves<br />
<br />
Questions and Discussions<br />
<br />
<br />
2. Close Conjunction Events<br />
<br />
Drew Turner and Ian Cohen: Close Conjunction Events between Van Allen Probes, MMS, and ARASE<br />
<br />
Justin Lee: EMIC wave activity during MMS-RBSP Close Conjunctions<br />
<br />
Questions and Discussions<br />
<br />
<br />
3. General Contributions: Radiation Belt Particles<br />
<br />
Geoff Reeves: Identifying the Magnitude and Occurrence Frequency of Radiation Belt Enhancement Events<br />
<br />
Maulik Patel: Simulations using LFM and Test Particle Code to Reproduce Drift Echoes<br />
<br />
Seth Claudiepierre: Electron Lifetimes from RBSP Observations and Comparison with Theoretical Estimates due to Pitch Angle Diffusion by Various Wave Modes<br />
<br />
Sasha Drozdov: Depletion of Multi-MeV Electrons<br />
<br />
Questions and Discussions<br />
<br />
==== [FG] RX ====<br />
<b>Local and Kinetic Physics of Reconnection</b><br><br />
Location: New Mexico Room<br><br />
1. Rick Wilder – A survey of plasma waves associated with asymmetric EDR events <br><br />
2. Wenya Li (Presented by Daniel Graham) – Electron Bernstein waves driven by electron crescents near the electron diffusion region. <br><br />
3. San Lu – Turbulence and particle acceleration in magnetic reconnection obtained from PIC simulations. <br><br />
4. Pryash Sharma Pyakurel – 3D electron-only reconnection <br><br />
5. Matt Argall – Observations of kinetic entropy in the diffusion region of magnetic reconnection. <br><br />
6. Blake Wetherton – Scaling of electron-scale heating in the exhausts of guide-field reconnection events. <br><br />
<br />
==== [Joint] MMS: Turbulence ====<br />
<br />
Location: Santa Fe<br />
<br />
=== 1530-1700: Splinter Sessions ===<br />
<br />
==== [FG] M3-I2 ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
*Chair: Barbara Giles -- Scribe: Rick Chappell<br />
#'''Invited: Roger Varney:''' title tbd<br />
#'''Invited: Naritoshi Kitamura:''' Solar Zenith Angle Dependence of Relationship Between Energy Inputs to the Ionosphere and Ion Outflow Fluxes<br />
#'''Jonathan Krall:''' SAMI2 simulation of counterstreaming H+ outflows during refilling<br />
#'''Meghan Burleigh:''' Transient ionospheric upflow driven by PMAFs observed during the RENU2 sounding rocket campaign<br />
#'''Chao Yue (UCLA):''' Unexpected field-aligned PAD of energetic ions in the ring current region<br />
#'''Mei-Yun Lin:''' Nitrogen Outflow in the Polar Wind Outflow Model (PWOM)<br />
#'''Chu Xiangning:''''Identifying the Magnetospheric Driver of STEVE'<br />
<br />
==== [Joint] MMV/IEMIT ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
# Overview from the CEDAR conductance challenge on the 17 Mar 2013 storm<br />
# Shin Ohtani: Solar zenith angle dependence of the auroral electrojets and its impact on conductance.<br />
# Toshi Nishimura: Ionospheric conductance observations of the 17 March 2013 event<br />
# Doga Ozturk: GTIM empirical results.<br />
# Gang Lu: AMIE results on the 17 Mar 2013 storm<br />
# Bob Robinson: The 17 Mar 2013 storm results from a new empirical ionospheric electrodynamics model <br />
# Hyunju Connor: OpenGGCM results on the 17 Mar 2013 storm<br />
# Kevin Pham: CMIT-IPWM results on the 17 Mar 2013 storm<br />
# Agnit Mukhopadhya: BATSRUS results on the 17 Mar 2013 storm<br />
# Magaret Chen: Magnetosphere-Ionosphere Electron Precipitation Dynamics and Conductance during the 17 March 2013 Storm<br />
<br />
See session description at the [http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_3D_Ionospheric_Electrodynamics_and_Its_Impact_on_the_Magnetosphere-Ionosphere-Thermosphere_Coupled_System#2019_GEM_Workshop_-_updated_on_Jun_17.2C_2019 FG page].<br />
<br />
==== [FG] DIP ====<br />
<br />
'''Location: New Mexico'''<br />
<br>Point-of-contact: Christine Gabrielse (cgabrielse@ucla.edu)<br />
<br>Co-chairs: Matina Gkioulidou, David Malaspina<br />
<br />
'''Topic: Particle Energization/Injection''' <br />
<br />
* '''Jianghuai Liu''' - The role of inductive electric fields on particle energization <br><br />
* '''Raluca Ilie''' - The role of inductive electric fields on particle energization (con'd)<br><br />
* '''Sam Bingham''' - Adiabatic Particle Energization using MMS <br><br />
* '''Wonde Eshetu''' - Simulations of electron energization and injection by BBFs using High-Resolution LFM MHD fields <br><br />
* '''Christine Gabrielse''' - Heliophysics System Observatory observations of small and large-scale injections: DFBs vs. large-scale dipolarization <br><br />
* '''Bob McPherron''' - MHD simulation of substorm including progressive approach of X-lines, flow channels, and flow penetration to the inner plasma sheet <br><br />
* '''Tetsuo Motoba''' - Azimuthally localized dispersionless injections inside GEO <br><br><br />
* '''Discussion on Particle Energization/Injection''' <br><br />
** ''Role of different fields?'' <br><br />
** ''Large vs. Small-scale?'' <br><br />
** ''This discussion will be inspired by the main points and questions presented.''<br><br />
<br><br />
<br><br />
<br><br />
<br />
==== [Joint] MMS: Turbulence ====<br />
<br />
Location: Santa Fe<br />
<br />
=== 1700-2000: Poster Session ===<br />
<br />
Please visit the [https://gemworkshop.org/pages/gem2019/2019_GEM_poster_0613.pdf Poster Information] page for details.<br />
<br />
<br />
== Wednesday, June 26 ==<br />
<br />
=== 0830-1000: Plenary Session ===<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
* '''RA GSM Tutorial''': ''J. Burch''<br />
<br />
* '''MMV Tutorial''': ''K. Garcia-Sage''<br />
<br />
=== 1030-1200: Splinter Sessions ===<br />
<br />
==== [FG] M3-I2 ====<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
Joint with the MMS Science Working Team<br />
*Chair: Barbara Giles -- Scribe: Rick Chappell<br />
#'''Invited: Lynn Kistler:''' Investigating Sources of Plasma Sheet Plasma<br />
#'''Invited: Stephen Fuselier:''' O+ in the Outer Magnetosphere: Effect on Magnetic Reconnection at the Magnetopause<br />
#'''Naritoshi Kitamura:''' O+ Measurements by MMS Around the Near-Earth Plasma Sheet Boundary<br />
#'''Li-Jen Chen:''' Can energetic O+ outflows preceding superstorms participate in the ring current directly? <br />
#'''Christopher Mouikis:''' title soon to be supplied<br />
#'''Justin Lee:''' MMS Measurements of Low-energy Plasma Composition and its Effects on EMIC Waves<br />
#'''Andrei Runov:''' THEMIS observations of ionospheric oxygen outflow during the substorm growth phase<br />
<br />
<br><br />
<br />
<h2>Session 1: Tuesday 1:30PM - Room tbd - Ionosphere/Magnetosphere Merged Models as a Context for the Observations</h2><br />
in collaboration with DIPS and MMV groups<br />
*Chair: Rick Chappell -- Scribe: Barbara Giles<br />
#'''Rick Chappell, Focus Group co-Chair:''' Overview and Updates <br />
#'''Invited: Daniel Welling:''' A Three Fluid Approach to Comprehensive Outflow Modeling<br />
#'''George Khazanov:''' The Electrostatic Potential Jumps Over the Sunlit Polar Cap Region <br />
#'''Invited: Katie Garcia-Sage:''' title tbd<br />
#'''Invited: Matina Gkioulidou:''' O+ circulation within the M-I coupled system<br />
#'''Matthew Huddleston:''' Ion Trajectories Connecting the Ionosphere to the Magnetosphere<br />
#additional participants welcome! you are welcome to add your contribution here or to email barbara.giles@nasa.gov and rick.chappell@vanderbilt.edu<br />
<br><br />
<br />
==== [FG] MAPS ====<br />
<br />
Location: New Mexico<br />
<br />
General substorm session<br />
* '''Kyle Murphy''' Tracking pre-onset aurora<br />
* '''Toshi Nishimura''' Tracking pre-onset aurora<br />
* '''Bea Gallardo-Lacourt (by Murphy)''' Tracking pre-onset aurora<br />
* '''Jiang Liu''' Ionosphere flows during substorms<br />
* '''Larry Lyons''' Substorm precursors and expansion phase activity<br />
* '''Nithin Sivadas''' Energetic electron precipitation<br />
<br><br />
<br />
==== [Joint] UMEA/DAYS/IHMIC ====<br />
<br />
Location: Santa Fe<br />
<br />
* Tom Elsden - ''Session introduction and goals''<br />
<br />
* Ferdinand Plaschke - ''An overview of dayside transients causing ULF waves''<br />
<br />
* Tom Elsden - ''3D ULF wave modeling with MHD''<br />
<br />
* Boyi Wang - ''The role of magnetosheath high-speed jets in triggering magnetospheric Pc5 ULF waves''<br />
<br />
* Bob Lysak - ''Ionospheric asymmetries and quarter-wave modes''<br />
<br />
* Xueling Shi - ''Conjugate Observations of ULF Waves during an Extended Period of Radial IMF''<br />
<br />
* Michael Hartinger - ''Localized magnetopause surface wave activity and modeling challenges''<br />
<br />
* Discussion<br />
<br />
=== 1200 - 1230: URM Event ===<br />
<br />
Location: New Mexico<br />
<br />
=== 1330-1500: Splinter Sessions ===<br />
<br />
==== [FG] M3-I2 ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
*Chair: Rick Chappell -- Scribe: Barbara Giles<br />
#'''Andrew Yau: e-POP Ion Composition Observations of Topside Ion Upflows: Storm Challenge Events 1 and 2 and Statistical Study of Other Storms in 2014-2017<br />
#'''Barbara Giles:''' Access to Polar TIDE outflow data base, new tools, new data products<br />
#'''Rick Chappell:''' Summary of Progess: <br />
#'''Discussion on the Storm Challenges<br />
#Additional participants welcome! Email barbara.giles@nasa.gov and rick.chappell@vanderbilt.edu<br />
<br />
==== [Joint] DAYS/BSH ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
* Andrew Dimmock - ''Introduction''<br />
<br />
* Ian Cohen - ''High-resolution measurements of the cross-shock potential, ion reflection, and electron heating at an interplanetary shock by MMS''<br />
<br />
* Xin An - ''Formation of foreshock transients and associated secondary shocks''<br />
<br />
* Yann Pfau-Kempf - ''Transmission of foreshock ULF waves to the magnetosheath''<br />
<br />
* Misha Balikhin - ''Nonstationarity of the quasi-perpendicular bow shock''<br />
<br />
* Heli Hietala - ''Global 3D hybrid simulations of magnetosheath jets''<br />
<br />
* Terry Liu - ''Statistical study of magnetosheath jet-driven bow waves''<br />
<br />
==== [FG] DIP ====<br />
<br />
'''Location: New Mexico'''<br />
<br>Point-of-contact: Christine Gabrielse (cgabrielse@ucla.edu)<br />
<br>Co-chairs: Matina Gkioulidou, David Malaspina<br />
<br />
'''Topic: Energy Transfer and Dissipation''' <br />
* '''Xiangning Chu''' - The generation of STEVE and penetration of fast flows to the plasmapause<br />
* '''Misha Sitnov''' - Kinetic dissipation in dipolarization fronts and magnetic reconnection<br />
* '''Rumi Nakamura''' - MMS observations of multi-scale field-aligned currents during dipolarization in the near-Earth plasma sheet<br />
* '''Amy Keesee''' - Concurrent enhancements in ion temperatures and auroral brightenings seen by TWINS and ASIs <br />
* '''Joachim Birn''' - Energy release and conversion and dynamo action in the tail on the basis of MHD simulation <br><br />
* '''Shin Ohtani''' - Dissipation and the ionosphere<br />
<br />
* '''Discussion on energy dissipation'''<br />
** Can we estimate a percentage that energy is dissipated into waves, direct ion heating, etc.? <br />
** Can we determine if and to what extent a dynamo in the transition region (driven by pressure gradients or vorticity) converts energy dissipated from the tail into field aligned currents to drive dissipation in the ionosphere? <br />
** What are the ways to estimate these values (simulation or theory or observational)?<br />
<br><br />
<br><br />
<br><br />
<br />
=== 1530-1700: Splinter Sessions ===<br />
<br />
==== [FG] DIP ====<br />
<br />
'''Location: Lumpkins Ballroom North'''<br />
<br>Point-of-contact: Christine Gabrielse (cgabrielse@ucla.edu)<br />
<br>Co-chairs: Matina Gkioulidou, David Malaspina<br />
<br />
'''Topic: Currents and Focus Group Discussion'''<br />
* '''Continue discussion from previous session (limit to 30 min)'''<br />
* '''Misha Sitnov''' - Dipolarizations and their connection to the ring current buildup and magnetic reconnection<br />
* '''Shin Ohtani''' - Double-wedge current system based on the GOES-RBSP comparison of dipolarization signatures<br />
* '''Yi-Hsin Liu''' - An explanation of the opposite dawn-dusk asymmetry at magnetotails of Earth vs. Mercury<br />
* '''Olivier Le Contel(?)''' - Quasi-parallel ion flow and energetic particles in PSBL indicating acceleration region farther downtail<br><br />
<br />
* '''Continue discussion from previous sessions''' <br />
** Updates from mini-GEM discussion? <br />
** Future planning: Community Input<br />
<br><br />
<br><br />
<br><br />
<br />
==== [Joint] UMEA/IEMIT ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
# (Invited) Boyi Wang: Ionospheric modulation by Pc5 ULF waves and wave structure detected by PFISR<br />
# (Invited) Xiaojia Zhang / Anton Artemyev: ULF modulation of VLF waves and precipitation<br />
# Doga Ozturk: Update from GEM/CEDAR joint session, PFISR E/ground magnetometer comparisons<br />
# Anatoly Streltsov: ULF waves generated by the MI interactions near the plasmapause<br />
# Mergen Aligabetov: ULF waves observed in space and on the ground at high and low latitudes<br />
# Mark Engebretson: Multi-Instrument Observations of Nighttime Impulsive Magnetic Events<br />
# Bob Lysak: Modeling ionospheric conductance and ground magnetic fields<br />
# Yan Song: ULF wave, M-I coupling and Auroral formation.<br />
<br />
==== [Joint] MMS: Bowshock ====<br />
<br />
Location: New Mexico<br />
<br />
==== [Joint] MMS: Inner M'sphere ====<br />
<br />
Location: Santa Fe<br />
<br />
<br />
== Thursday, June 27 ==<br />
<br />
=== 0830-1000: Plenary Session ===<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
* '''RA MPS Tutorial''': ''A. Runov''<br />
<br />
* '''RA IMAG Tutorial''': ''H. Zhao''<br />
<br />
* '''Mission/Modeling''': ''M. Gkioulidou, T. Nishimura''<br />
<br />
=== 1030-1200: Splinter Sessions ===<br />
<br />
==== [FG] Rx ====<br />
<b>Local and Kinetic Physics of Reconnection</b><br><br />
Location: Lumpkins Ballroom<br><br />
1. Anton Artemyev – MMS, Artemis and optic observations of the magnetotail reconnection <br><br />
2. Misha Sitnov – Global context of magnetotail reconnection and the global topology of the magnetic field during the July 11 2017 EDR event. <br><br />
3. Narges Ahmadi – Turbulence in magnetotail reconnection <br><br />
4. Chih-Ping Wang – Simultaneous earthward and tailward busty flows observed by the two ARTEMIS in mid-tail (60 Re) and comparisons with PIC simulations. <br><br />
5. Chris Bard - Hall MHD effects on tail reconnection for a Earth-like, miniature magnetosphere. <br><br />
6. Olivier Le Contel - Electron holes in the plasma sheet - related to reconnection? <br><br />
<br />
==== [Joint] UMEA/RB ====<br />
<br />
Location: New Mexico<br />
*Robert Allen, Outer magnetospheric EMIC wave source regions characterized by Cluster<br />
*Sarah Vines, EMIC waves in the outer magnetosphere: Observations of an off-equator source region<br />
*Justin Lee, EMIC wave observations by MMS<br />
*Chao Yue, The relationship between EMIC wave properties and proton distributions based on Van Allen Probes observations<br />
*Kristine Sigsbee, Simultaneous EMIC Wave Observations During a Van Allen Probes Conjunction<br />
*Hyomin Kim, Observations of Particle Loss due to Injection-Associated EMIC Waves<br />
*Yuri Shprits, Dips in PSD and how they are related to EMIC wave scattering<br />
*Richard Denton, Electromagnetic ion cyclotron waves in the dipole magnetosphere and pitch angle scattering of sub-MeV relativistic electrons by those waves<br />
*Qianli Ma, Pitch angle scattering of radiation belt electrons due to statistical EMIC wave spectra<br />
<br />
==== SPEDAS ====<br />
<br />
Location: Santa Fe<br />
<br />
=== 1330-1500: Splinter Sessions ===<br />
<br />
==== [Joint] MAPS/DIP ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
==== [Joint] RX/DAYS ====<br />
<br />
Location: Lumpkins Ballroom South<br />
<br />
* Katariina Nykyri - ''MMS observations of the formation and properties of high-latitude diamagnetic cavities''<br />
<br />
* Brian Walsh - ''Cubesat mission to study magnetic reconnection''<br />
<br />
* Xuanye Ma - ''Comparison between fluid simulation with test particles and hybrid simulation for the Kelvin-Helmholtz instability''<br />
<br />
* Karlheinz Trattner - ''Elongated Dayside X-lines''<br />
<br />
* Marcos Sylveira - ''Flux transfer events observed in the dayside magnetopause by MMS mission''<br />
<br />
* Andrew Dimmock - ''The SMILE SXI instrument: a global imager for solar wind - dayside interactions''<br />
<br />
==== [FG] UMEA ====<br />
<br />
Location: New Mexico<br />
*Matina Gkioulidou/Seth Claudepierre, RBSP HGSO coordination<br />
*Sarah Vines, Determining EMIC wave vector properties through multi-point measurements: The wave curl analysis<br />
*Larry Kepko, Solar wind driven ULF waves<br />
*Aaron Breneman, BARREL precipitation during solar wind driven ULF wave events<br />
*Anatoly Streltsov, Effect of the Hall Conductivity on the generation of ULF waves<br />
*Mohammad Barani, Estimating the Azimuthal Mode Structure of ULF Waves Based on Multiple GOES Satellite Observations <br />
*Kazue Takahashi, L versus time structures of ground magnetic pulsations<br />
*Chih-Ping Wang, Earthward propagation of Pi2 waves<br />
<br />
=== 1530-1700: Splinter Sessions ===<br />
<br />
==== [FG] TAIL ====<br />
<br />
Location: Lumpkins Ballroom North<br />
<br />
<br />
1.'''Anton Artemyev,''' Multicomponent ion population in the magnetotail <br />
<br />
2. '''Sasha Lukin (presented by Anton),''' Plasma populations around the distant equatorial magnetopause: indication on selective mechanism of ion and electron transport<br />
<br />
2. '''Olivier Le Contel,''' MMS/cluster joint observations during PSBL crossings<br />
<br />
3. '''Jiang Liu,''' Field-aligned current carriers in the magnetotail<br />
<br />
4. '''Steve Xu,''' Statistics of current sheets at lunar distance<br />
<br />
5. '''San Lu,''' Reconnection in polarized thin current sheet <br />
<br />
6. '''Chih-Ping Wang,''' Firehose instability within the recoonection exhaust observed in mid-tail<br />
<br />
==== [FG] UMEA ====<br />
<br />
Location: Lumpkins Ballroom South<br />
*Xuzhi Zhou, Acceleration of relativistic electrons by global-scale ULF waves<br />
*Tomotsugu Yamakawa, Simulation of the excitation of storm-time Pc5 ULF waves by ring current ions based on the drift-kinetic model<br />
*Frank Toffoletto, Buoyancy Waves (TBD) <br />
*Peter Chi, Observations of High-m Poloidal Waves along Magnetospheric Field Lines<br />
*Mike Hartinger, Observations of wave-particle interactions using MagEIS ultra-high resolution energy channels<br />
*Jiang Liu, Ultralow Frequency Waves Deep Inside the Inner Magnetosphere Driven by Dipolarizing Flux Bundles, and their interaction with electrons<br />
<br />
==== [Joint] MMS: SPEDAS ====<br />
<br />
Location: New Mexico<br />
<br />
==== [Joint] DAYS/MMV ====<br />
<br />
Location: Santa Fe<br />
<br />
* Heli Hietala - ''Challenge progress summary''<br />
<br />
* Sarah Vines - ''MMS observations during southward IMF: recap and update''<br />
<br />
* Karlheinz Trattner - ''Maximum shear model results''<br />
<br />
* Zhifang Guo - ''Global 3D hybrid simulation results''<br />
<br />
* Marcos Silveira - Magnetopause transients seen in the challenge event: MMS vs MHD-EPIC comparison<br />
<br />
* Discussion - including Special Issue manuscript coordination<br />
<br />
=== 1700-2000: Poster Session ===<br />
<br />
Please visit the [https://gemworkshop.org/pages/gem2019/2019_GEM_poster_0613.pdf Poster Information] page for details.<br />
<br />
<br />
== Friday, June 28 ==<br />
<br />
=== 0830-1000: Plenary Session ===<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
* '''Students Awards, Student Invited Tutorial''': ''M. Argall''<br />
<br />
* '''Mission/Modeling''': ''J. Sample''<br />
<br />
=== 1030-1200: Splinter Sessions ===<br />
<br />
==== [FG] TAIL ====<br />
<br />
Location: Lumpkins Ballroom<br />
<br />
This is the final year for Tail Environment FG, we will summary the major findings from this FG. We will discuss how we will proceed to maintain the discussion platform for the magnetotail physics in GEM community, including a proposal for a new FG.<br />
<br />
==== [FG] RB ====<br />
<br />
Location: New Mexico<br />
<br />
<br />
1. General Contributions: Inner Belt and Slot Region<br />
<br />
Xinlin Li: Source and Loss of Inner Belt Protons (10s of MeV) and Their Solar Cycle Variations Based on Multi-Point Measurements and Analysis<br />
<br />
Zheng Xiang: On Trapped Electron Dynamics in Earth's Inner Radiation Belt due to Atmospheric Scattering Loss and Cosmic Ray Albedo Neutron Decay (CRAND) as the Source<br />
<br />
Man Hua: Modeling Electron Acceleration and Butterfly Pitch Angle Distributions in the Earth's Inner Radiation Belt and Slot Region<br />
<br />
Questions and Discussions<br />
<br />
<br />
2. General Contributions: Radiation Belt Waves<br />
<br />
Dave Hartley: The Angular Distribution of Chorus Waves and the Role of Plumes in the Chorus-to-Hiss Mechanism<br />
<br />
Xin An: Nonlinear Wave Structures Driven by Whistler Waves<br />
<br />
Shangchun Teng: Typical Characteristics of Whistler Mode Waves Categorized by Their Spectral Properties Using Van Allen Probes Observations<br />
<br />
Homayon Aryan: Discrete Equatorial Magnetosonic Waves Observed by Cluster<br />
<br />
Oleksiy Agapitov: TBD<br />
<br />
Ivan Vasko: Electrostatic Steepening of Whistler Waves in the Radiation Belts<br />
<br />
Questions and Discussions<br />
<br />
<br />
3. General Contributions: Radiation Belt Modeling<br />
<br />
Anthony Chan: A New Technique for Radiation Belt Modeling: Theory<br />
<br />
Scot Elkington: A New Technique for Radiation Belt Modeling: Results<br />
<br />
Yihua Zheng: Model Validation<br />
<br />
Liheng Zheng: Drift shell bifurcation effects on radiation belt electrons modeled by Markov chain<br />
<br />
Questions and Discussions</div>Hyominkim