2018 GEM Workshop and GEM-CEDAR Joint Workshop

Detailed Schedule

Below is a detailed session schedule with names of tentative speakers provided by Focus Group Leaders and Research Area Coordinators. The information here serves as a rough guide for those who wish to know the most updated session plans. Due to the dynamic nature of the Workshop, Focus Groups may continue to revise their agenda as needed.

All other information about the 2018 GEM Summer Workshop can be found at the GEM Workshop Coordinator site.

Monday, June 18

0830-1000: Plenary Session

Location: Eldorado B

• Opening and welcome: Jacob Bortnik (15 min)

• SWMI panel: Katariina Nykyri (moderator), Bob McPherron, Vassilis Angelopoulos, Toshi Nishimura, Jay Johnson, Heli Hietala (45 min)

• Mission talks: RBSP - Sasha Ukhorskiy; THEMIS - Vassilis Angelopoulos; MMS - Li-Jen Chen/Rick Wilder; NSF Ground-based - Mark Engebretson/Eftyhia Zesta (30 min)

1030-1200: Splinter Sessions

[Joint] ULF wave Modeling, Effects, and Applications + Magnetotail Dipolarization and Its Effects on the Inner Magnetosphere + Testing Proposed Links between Mesoscale Auroral and Polar Cap Dynamics and Substorms

ULF waves during particle injections and dipolarizations This session focuses on the relationship between particle injections/dipolarizations and Pc4-5/Pi2/EMIC waves - e.g., Why are waves driven in only some events? Do waves impact the ring current/radiation belts?

• 1. Discussion of Session Topic

• 2. Bob Lysak -- Ionospheric Conductivity Effects on Pi2 Pulsations

• 3. Mike Hartinger -- Pi2 waves during an extended period with stable plasmapause location and variable geomagnetic activity

• 4. Toshi Nishimura -- Ionosphere observations of Pc5 ULF waves during 2018 HGSO conjunctions

• 5. Xueling Shi -- Long-lasting poloidal ULF waves observed by multiple satellite and SuperDARN HF radars

• 6. Jian Yang -- New RCM-I simulation results for buoyancy waves

• 7. Dick Wolf -- Theory of Buoyancy Waves

• 8. Yan Song -- What Causes the Substorm Expansion Phase and Associated ULF Waves?

1330-1500: Splinter Sessions

[FG] ULF wave Modeling, Effects, and Applications

Recent advances in ULF wave research

• 1. Overview of focus group goals and recent progress

• 2. Brief ULF wave poster overviews (Tuesday posters)

• 3. Kazue Takahashi -- Observation of nightside ULF waves by RBSP and Arase

• 4. Tom Elsden -- Broadband Excitation of 3D Alfven Resonances (FLRs) in an MHD Waveguide

• 5. Boyi Wang -- 2-D structure of foreshock driven Pc5 ULF waves observed by the THEMIS satellites and South Pole imager

• 6. Xiaochen Shen -- Foreshock transient-driven ultra-low frequency (ULF) waves with dawn-dusk asymmetry of wave power

• 7. Chih-Ping Wang -- ULF waves possibly driven by tailward propagation of foreshock perturbations

• 8. Allison Jaynes -- Fast diffusion of ultra-relativistic electrons in the outer radiation belt: 17 March 2015 storm event

• 9. Rualdo Soto -- The Drift-Mirror instability in Earth's inner magnetosphere

• 10. Martin Archer/Mike Hartinger -- Results from Sonification and Citizen Science of Magnetospheric ULF waves

1530-1700: Splinter Sessions

[FG] ULF wave Modeling, Effects, and Applications

EMIC wave generation, propagation, and interactions: Discussion leaders Alexander Drozdov and Maria Usanova

The generation mechanisms of EMIC waves, their effects on trapped particles, and their propagation through the M-I system are challenging topics that involve multiple GEM research areas. Despite several years of observations and improved global wave statistics, there are many unresolved questions that limit further investigation, modeling and prediction of processes in the inner magnetosphere involving EMIC waves. This session includes presentations and discussion that unites recent findings in different areas of EMIC wave research and identifies observations/models most needed to address unresolved questions.

• 1. Dedong Wang -- EMIC wave observations from Van Allen Probes and MMS

• 2. Mark Engebretson -- MMS, Van Allen Probes, and ground based magnetometer observations of EMIC waves associated with a modest interplanetary shock

• 3. Maria Usanova -- MMS Observations of Harmonic Electromagnetic Cyclotron Waves

• 4. Naritoshi Kitamura -- Direct measurements of energy transfer from hot H+ to EMIC waves by MMS

• 5. Bruce Fritz -- ELF Whistler Dependence on a Sunlit Ionosphere

• 6. Chae-Woo Jun -- EMIC waves associated with/without the injection inside/outside the plasmapause

• 7. Hyomin Kim -- Injection-associated EMIC waves

• 8. Sebastian Cervantes -- EMIC wave parameterization in radiation belt reanalysis

• 9. Maria Usanova -- Long-term correlation of EMIC wave activity and radiation belt flux variations

• 10. Alexander Drozdov -- The effects due to the EMIC waves in the VERB code modeling

Tuesday, June 19

0830-1000: Plenary Session

Location: Eldorado B

• MPS tutorial: Slava Merkin

• GSM tutorial: Li-Jen Chen

1030-1200: Splinter Sessions

[FG] Inner Magnetosphere Cross-Energy/Population Interactions

Inner magnetosphere-ionosphere coupling

• Harneet Sangha: The Field-Aligned Current Structure Associated with Sub-Auroral Polarization Streams
• Bea Gallardo-Lacourt: STEVE: An optical structure in the subauroral region. Location and geomagnetic conditions during its formation
• Yiqun Yu: Self-consistent modeling of magnetosphereic precipitation and response in the ionosphere
• Nithin Sivadas: Energetic precipitation during substorms: simultaneously measured in the magnetosphere and ionosphere
• Xiangning Chu: Unexpected storm-time plasmaspheric density increase at low L shells on the nightside

1330-1500: Splinter Sessions

[FG] Inner Magnetosphere Cross-Energy/Population Interactions

particle and wave dynamics

• Yue Chao：Oxygen ion behavior in Earth’s ring current dynamics based on Van Allen Probes observations
• Mykhaylo Shumko: Evidence of Microbursts Observed Near the Equatorial Plane in the Outer Van Allen Radiation Belt
• Run Shi: Properties of whistler mode waves in plasmasphere and plasmaspheric plume
• Qianli Ma: Ion Heating by Electromagnetic Ion Cyclotron Waves in the Inner Magnetosphere’
• Sam Bingham: The development of source electrons and chorus wave activity during CME and CIR storms
• Poorya Hosseini: TBD

[FG] Magnetotail Dipolarization and Its Effects on the Inner Magnetosphere

Chairs: Christine Gabrielse, Drew Turner, David Malaspina, Matina Gkioulidou, Slava Merkin

We will have a panel discussion on the questions below with an aim to communicate different types of models' capabilities to answer different science questions, as well as a discussion on how we can move forward towards improved, data-informed models. We invite the audience to participate in the discussion and to provide input as to how we, as a field, can move forward to better understand how dipolarizations affect the inner magnetosphere, and/or how they are affected by the coupled magnetosphere-ionosphere system.

Panelists
Misha Sitnov
San Lu
Jimmy Raeder
Yann Kempf
Colby Lemon
Katie Garcia-Sage

Panel Questions

1) Given our current modeling capabilities, discuss which kinds of models are best at capturing which aspects of dipolarization events and their effects in the magnetosphere.

2) What determines the dipolarization scale size in different models? (e.g., physical description, boundary conditions, model input parameters, ionosphere conditions, etc.?)

3) The transition region is where both inertia and energy dependent drifts are important. No existing models treat that region correctly.

  (a) How do we move forward?

  (b) Or, more specifically, address the question of dipolarization front deceleration: 
     (i) How do various models treat dipolarization deceleration as they approach the inner magnetosphere?  
     (ii) What processes are decelerating the fronts in the models? 
     (iii) What inner magnetosphere processes are missing (e.g. plasmasphere, complex ionospheric conductivity models) and does excluding these processes lead to different deceleration predictions?

  (c) And/or address:
     (i) What are the relative roles of ExB, energy-dependent drifts and particle trapping in transport and energization in the transition region?
     (ii) To what extent are these processes adiabatic for particles of different energies?
     (iii) What is their overall contribution to the ring current build up? 

Although the questions are focusing on dipolarization implementation into the current magnetospheric models, participation of data analysts is highly desired and encouraged in order to establish an observational framework for the models.

1530-1700: Splinter Sessions

[FG] Inner Magnetosphere Cross-Energy/Population Interactions

• Report on the spacecraft charging challenge
• We will have a panel discussion on remaining scientific questions in the coupled inner magnetosphere system and on future plans regarding how we will continue and move forward to better understand the cross-energy/population coupling processes and interactions with tail and ionosphere. We also cordially invite the audience to participate and contribute.

• Panelist: Mike Liemohn, Vania Jordanova, George Khazanov, Yihua Zheng

[FG] Magnetotail Dipolarization and Its Effects on the Inner Magnetosphere

Location: Zia Ballroom
Chairs: Drew Turner, Christine Gabrielse, David Malaspina, Slava Merkin, Matina Gkioulidou

This is an informal, workshop-style session that we opened up to contributed slides in order to provide the community a mouthpiece to focus on any brand new results, outstanding challenges, and/or outstanding questions concerning the research.

Although we provide the list of speakers, we point out that some of them may present during our panel-led discussion at 1:30.

Speakers ------------------- Topics (~5 min)
1. Chih-Ping Wang ------- RCM results of bubbles
2. Jiang Liu ----------------- Field-aligned currents related to DFBs
3. Brian Swiger ----------- ~keV electron enhancements in the tail from THEMIS, correlation to AE
4. Andrei Runov (?) ------ Comparing injections at THEMIS with LANL
5. Sasha Ukhorskiy ------- Ion acceleration and transport from the tail to the inner magnetosphere, the effects of trapping, adiabaticity, and the role of charge
6. Anton Artemyev -------- Particle energization: adiabatic vs. nonadiabatic
7. Xiangnig Chu ----------- Broadband waves on the dipolarization front in the inner magnetosphere
8. Shin Ohtani ------------- Statistical study of two-point measurements of dipolarization and the result shows earthward propagation
9. Ryan Dewey ------------ Dipolarization effects at Mercury and comparisons to Earth

Wednesday, June 20

0830-1000: Plenary Session

Location: Eldorado B

• IMAG tutorial: Harlan Spence

• Student invited tutorial: David Sibeck

1030-1200: Splinter Sessions

[Joint] ULF wave Modeling, Effects, and Applications + Modeling Methods and Validation

ULF wave modeling challenge

Overview of the ULF wave modeling challenge, including discussion of the ULF wave challenge event on 27-28 May 2017 (http://gem.epss.ucla.edu/mediawikiwiki/index.php/FG:_ULF_Wave_Modeling%2C_Effects%2C_and_Applications) and coordinated analysis aimed at identifying additional science targets for the modeling challenge.

• 1. Brief ULF wave poster overviews (Thursday posters)

• 2. Mike Hartinger: ULF wave modeling challenge event overview, discussion of challenge targets (continuing during session)

• 3. Mariko Teramoto: ARASE ULF wave observations during challenge event

• 4. Sam Califf: GOES-14 and 16 observations during the ULF wave challenge event, Data Discussion

• 5. Toshi Nishimura: PFISR measurements of the 27-28 May 2017 ULF waves

• 6. Dogacan Su Ozturk: The modeling study of the 27 March 2017 Event

• 7. Xiaochen Shen: GEM Challenge Event: ULF wave-related electron and proton precipitation/negative dynamic pressure pulse driven EMIC wave

• 8. Others discuss when their figures/summary plots in event overview pdf are presented…

[FG] Geospace Systems Science

“Progress in Systems Science”. This session will be comprised of short oral presentations highlighting this year’s progress. Speakers will include

1. Brian Walsh

    Topic: on solar wind propagation and uncertainties

2. Misha Sitnov

    Topic: on data-mining efforts in empirical reconstruction of substorms

3. Alexander Lipatov

    “Effects of transmitted interplanetary impulse interaction with plasmaspheric plume. First results from 3-D hybrid kinetic modeling”

4. Shin Ohtani

    TBA

5. Lynn Kistler

    Topic: the sawtooth project

6. Katariina Nykyri

    TBA

7. Joe Borovsky

    “A Composite Index of Magnetospheric Activity”

1330-1500: Splinter Sessions

[FG] Modeling Methods and Validation

This session will include talks on general validation topics, followed by a discussion of validation at GEM.

- Mike Liemohn: ILWS-CCMC “metrics for modeling geomagnetic indices”
- Adam Kellerman: "Application Usability Levels: A framework for objectively measuring a projects progress towards specific applications.”
and: "Verification of the UCLA real-time data assimilative VERB code over the 2016-2018 period of operation."
- Lutz Rastaetter: New visualizations and metrics
- Misha Sitnov: “Global MHD validation of substorms and implications for kinetic simulations”
- Nathaniel Frissell: "Modeling Amateur Radio Soundings of the Ionospheric Response to the 2017 Great American Eclipse"
- MM&V Co-chairs (presented by Katherine Garcia-Sage): GEM Validation - Issues and Ideas

Following the speakers, we will have a discussion on ideas and issues for organizing validation at GEM.

[FG] Tail Environment and Dynamics at Lunar Distances

1. Robert Allen: Cassini observations of the distant magnetotail and sheath

2. Lin Yu et al. (presented by Jay Johnson): Global hybrid simulation and THEMIS and DMSP observations

3. Joachim Birn: Current diversion and energy flow and conversion associated with the substorm current wedge

4. Jiang Liu: Field-aligned currents from Swarm

5. Xiaochen Shen: Kelvin-Helmholtz waves in mid-tail

6. San Lu: PIC simulation result on the magnetotail dawn-dusk asymmetry

7. Anton Artemyev: 3D picture of thin current sheet formation

8. Andrei Runov: Current sheet structure at lunar distances

9. Chih-Ping Wang: Update on mid-tail dynamics observed by ARTEMIS

[FG] Geospace Systems Science

“Geospace Systems Science: Looking Ahead”. This is the final (5th-year) session of the GSS Focus Group. This session will be an audience discussion to assess the systems-science approach to understanding geospace and to consider new ideas for the future.

1530-1700: Splinter Sessions

[FG] Tail Environment and Dynamics at Lunar Distances

Modeling challenge: We will discuss candidate events for next modeling challenge

Candidate events:

1. Magnetotail length during N IMF: 2010-10-22, Two ARTEMIS tail conjunction

2. Impact of small solar wind dynamic pressure on the magnetotail: 2017-09-06, Geotail-ARTEMIS midnight conjunction

3. Magnetotail response to transition from N IMF to S IMF: 2017-07-09: GOES-Geotail-MMS-ARTEMIS midnight conjunction

[FG] Quantitative Assessment of Radiation Belt Modeling

Chairs: Weichao Tu and Steve Morley

1. Mary Hudson (scene-setting talk, 15min): Recent Advances and Open Questions in RB Enhancements

2. Alex Boyd: What Causes Radiation Belt Enhancements: A Survey of the Van Allen Probes Era

3. Hong Zhao: Effects of Solar Wind and Magnetospheric Processes on the Ultra-Relativistic Electron Acceleration in the Outer Radiation Belt

4. Adam Kellerman: Quantitative analysis of the radiation-belt electron phase-space-density response to stream-interaction regions utilizing the data-assimilative VERB code

5. Zhao Li: Relativistic electron advection during CME-shock driven storms

6. Leng Ying Khoo: On the Initial Enhancements of Energetic Electrons and the Innermost Plasmapause Locations During Storm Periods

7. Dedong Wang: VERB Simulation for GEM Challenge Events

8. Ivan Vasko: Electrostatic Steepening of Whistler Waves

9. Anton Artemyev: Electron nonlinear resonant interaction with short and intense parallel chorus wave-packets

10. (walk-in) Scot Elkington: Test Particle/SDE Simulations of a Stormtime Enhancement Event

11. (walk-in) Xiaojia Zhang: Properties of intense field-aligned lower-band chorus waves: implications for nonlinear wave-particle interactions

Thursday, June 21

0830-1000: Plenary Session

Location: Eldorado B

Agency reports:

• NSF - Carrie Black, Mike Wiltberger
• NOAA - Howard Singer
• NASA - Jim Spann
• Air Force - James McCollough
• LPAG - Matina Gkioulidou et al.

1030-1200: Splinter Sessions

[FG] Quantitative Assessment of Radiation Belt Modeling

Chairs: Jay Albert and Wen Li

1. Sasha Ukhorskiy (scene-setting talk, 15min): Recent Advances and Open Questions in RB Dropouts

2. Seth Claudepierre: Empirical estimates of electron lifetimes in the radiation belts

3. Zheng Xiang: A statistical survey of radiation belt dropouts observed by Van Allen Probes

4. Joe Borovsky: MeV-Electron Dropouts without MeV-Proton Dropouts

5. Luisa Capannolo: Understanding the driver of energetic electron precipitation using coordinated multi-satellite measurements (24 September 2013 Challenge Event)

6. Mark Engebretson: EMIC wave events during the four GEM QARBM challenge intervals

7. Armando Maldonado: On the diffusion rates of electron bounce resonant scattering by magnetosonic waves

8. Oleksiy Agapitov: Chorus-microburst relations and the corresponding scaling

9. Alexander Drozdov: Modeling of a non-storm dropout event

10. (walk-in) Robyn Millan: Newly selected REAL CubeSat Mission

11. (walk-in) Poorya Hosseini: Whistler wave-particle interaction in the Earth's radiation belts

1530-1700: Splinter Sessions

[FG] Modeling Methods and Validation: Conductance Challenge Session

- Geoff Crowley
- Slides from Steve Kaeppler
- Slides from Ryan McGranaghan
- George Khazanov
- Margaret Chen
- Agnit Mukhopadhyay

The goal for this session is to discuss data/model results from the specific challenge days, as well as data/model parameters, uncertainties, assumptions, and boundary conditions, with an eye toward making comparisons for these events (including model-model, data-data, and model-data comparisons).

After the speakers, we’ll determine whether there is anyone else who we need to get involved in the challenge events and identify next steps for making comparisons and moving the challenge forward.

Challenge events:

1. 1 2016 Oct 13-15
   
2. 2 2013 March 17
   

Bonus storms (selected by the CCMC Space Weather Capabilities Auroral Assessment team):

1. 3 2015 Jun 21-24
   
2. 4 2012 March 9
   

[FG] Quantitative Assessment of Radiation Belt Modeling

Chairs: Steve Morley and Jay Albert

1. Steve Morley: Summary of RB Enhancement and Dropout Challenges

2. Lauren Blum: Newly selected CubeSat mission at GTO orbit

3. Xinlin Li: Newly selected CubeSat: Inner Radiation Belt Experiment (CIRBE)

4. James McCollough: Update on DSX Mission

5. Panel Discussions: Remaining Open Questions and Future Directions of Radiation Belt Studies

Panelists: Jacob Bortnik, Allison Jaynes, Wen Li, Geoff Reeves, and Drew Turner

Friday, June 22

0830-1000: Plenary Session

Location: Eldorado B

• Student poster awards & Jacob poll results (30 min)

• MIC panel: Shin Ohtani (moderator), Brian Anderson, Bill Bristow, Bob Lysak, Peter Chi, Bill Lotko (1 hour)