FG: The Impact of the Cold Plasma in Magnetospheric Physics

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Contents

Co-chairs

Gian Luca Delzanno (Los Alamos National Laboratory)

Natalia Buzulukova (Goddard Space Flight Center)

Barbara Giles (Goddard Space Flight Center)

Roger Varney (SRI International)

Joe Borovsky (Space Science Institute)

European representative: Jeremy Dargent (University of Bochum Bochum Germany)

Early-career representative: Mei-Yun Lin (University of California, Berkeley )

Research area

The cold plasma impacts all the research areas of GEM but a significant focus will be on ‘Inner Magnetosphere (IMAG)’ because of the critical role of waves and wave-particle interactions in magnetospheric dynamics.

Description

The cold (<1 keV) particle populations that exist in the magnetosphere (cf. Table 1) include (1) plasmaspheric ions (including the plume), (2) plasmaspheric electrons (including the plume), (3) cloak ions, (4) oxygen torus, (5) cloak electrons, (6) outflowing cold electrons, (7) outflowing cold ions and (8) charge-exchange-byproduct cold protons (CHEX protons). Outflowing (from the ionosphere) cold electrons are anticipated for the maintenance of charge neutrality in the magnetosphere: two places where they should occur are (a) in the post-midnight to dawn region where the electron plasma sheet precipitates away to make diffuse aurora and (b) at the inner edge of the electron plasma sheet where (owing to gradient-curvature drift effects) the ion plasma sheet flows radially Earthward while the electron plasma sheet flows eastward. There are also plasmaspheric-refilling cold-ion and cold-electron outflows into open-drift-trajectory flux tubes on the dayside.

While the hot (ring current/plasma sheet) and energetic (radiation belts) populations have received a lot of attention because of their potential harm to space infrastructure, the cold-plasma populations are the least studied so that in some cases they have been referred to as the ‘hidden populations’. This is because (1) spacecraft are almost always charged to values that make measuring the cold-ion properties very difficult and (2) spacecraft surfaces exposed to sunlight and bombarded by energetic particles emit copious amounts of low-energy secondary and photoelectrons that blind the measurement of magnetospheric cold electrons.

Yet, the cold plasma plays multiple roles in magnetospheric dynamics (see Table 1). All of the magnetosphere’s cold ions flow to the dayside magnetopause, where the cold ions can reduce solar-wind/magnetosphere coupling by mass-loading dayside reconnection. The presence of cold cloak and CHEX ions when magnetospheric convection slows down can increase the early-time refilling rate of the plasmasphere. Cold ions and cold electrons can affect waves and wave-particle interactions by changing (1) the resonant conditions between particles and waves, (2) the wave growth rates, (3) the saturation level of the waves, and (4) wave-particle diffusion coefficients, all with strong implications on the dynamics of plasma sheet, ring current, and radiation belts. The low-energy oxygen of the cloak drastically changes ULF frequencies, which impacts the radial diffusion of energetic populations. Cold plasma has repeatedly been implicated for the spatial structuring of diffuse and pulsating aurora. See Table 1 for some connections between cold plasma populations and known impacts in magnetospheric physics.

We cannot understand the full complexity of the magnetospheric system until we can

  1. reliably measure the full properties of the cold ions and electrons,
  2. learn what controls these properties, and
  3. learn all of the impacts of the cold populations.

We also need to include all of the related couplings into global models. This FG is proposed to advance our understanding of the impact of the cold particle populations in magnetospheric physics, from both theoretical/modeling and observational perspectives. The cold plasma represents a clear outstanding issue that needs to be addressed to make progress towards a full understanding of magnetospheric dynamics.

Table 1. Cold plasma populations and their known effect on the Earth's magnetosphere.
Cold Population Impact on the Magnetosphere
Plasmasphere ions Alter ULF frequency and radial diffusion of energetic electrons and ions
Alter EMIC scattering of electron radiation belt
Plasmasphere electrons Alter HISS decay of radiation-belt electrons
Create whistler ducts
Plasmapause HISS-chorus boundary
Site of enhanced ULF activity
Site of shear-flow instabilities leading to giant undulations
Plasmaspheric plume ions Reduce the dayside reconnection rate
Alter Hall microphysics of dayside reconnection
Alter EMIC scattering of outer electron radiation belt
Cloak ions Alter ULF frequency and radial diffusion of energetic electrons and ions
Reduce the dayside reconnection rate
Alter Hall microphysics of dayside reconnection
Alter EMIC scattering of electron radiation belt
Reduce electron-plasma-sheet-driven spacecraft charging
Reduce threshold for Kelvin-Helmholtz on magnetopause
Cloak electrons Alter chorus and affect electron-radiation-belt energization
Structured dawnside cold electrons Produce spatial structure of (a) chorus-wave amplitudes and (b) the pulsating aurora
Charge-exchange-byproduct protons Alter Hall microphysics of dayside reconnection
May increase early-time plasmaspheric refilling rate
Alter EMIC scattering of electron radiation belt
Ionospheric ion outflows Provide a major source of magnetospheric plasma
Ionospheric ion outflows in magnetotail Alter Hall microphysics of magnetotail reconnection
Mass-loading of magnetotail reconnection
Alter magnetotail tearing instability
Ionospheric electron outflows Alter chorus properties

Specific goals

The overarching goals of the FG are to make scientific progress on understanding the impact of the cold plasma in magnetospheric physics and the implementation of those impacts into global models.

The specific goals are to

  1. bring together theoretical and observational knowledge to assess the most important impacts associated with the cold plasma in the magnetospheric system;
  2. determine what is known and what is unknown from an observational point of view and the related open scientific questions;
  3. plan data-analysis and modeling studies that are needed to gain critical understanding of cold populations and their controlling factors;
  4. determine what measurements are necessary to resolve these open scientific questions, including possibly the development of future instrumentation concepts and future mission concepts;
  5. determine how to fill in the gaps, including how to include those impacts into global simulation models. Possible ideas include developing empirical/simplified models that capture a specific cold-plasma effect (i.e., for instance, using simulation codes to understand and parametrize the impact of cold-plasma parameters on the saturation amplitude of various waves in the inner magnetosphere for use in ray-tracing and ring-current models), develop efficient computational strategies to couple plasmaspheric models/codes into inner magnetospheric models and develop empirical geomagnetically-driven or solar-wind-driven models for the properties of the plasma cloak or the CHEX-proton population that could be added to global simulation models.

The concrete deliverables of the FG will be a review paper that describes the progress made on all the goals discussed above and a journal special issue on the importance of the various cold populations.

EVENTS IN 2020

Session at CEDAR 2020

Title: Cold Plasma Populations Throughout the Geospace System

Date: Friday, June 26th 2020, 11:00 AM - 1:00 PM MDT

Organizers: Roger Varney, Gian Luca Delzanno

Link: http://cedarweb.vsp.ucar.edu/wiki/index.php/2020_Workshop:Cold_Plasma

Sessions at Virtual GEM 2020

Several events are organized at GEM!

1) IMAG tutorial

  • Date: Tuesday, July 21st 2020, 11:00 AM - 11:45 AM EDT
  • Speaker: Rick Chappell, Vanderbilt University
  • Title: The Impact of Ionospheric Plasma on the Magnetosphere

2) Focus Group discussion on planning activities for the next years

  • Date: Thursday, July 23rd 2020, 1:00 PM - 2:30 PM EDT
  • Structure of the session:
  1. 1:00 PM - 1:05 PM. Short introduction on the goals of the Focus Group;
  2. 1:05 PM - 1:20 PM. Scene-setting talk by Elena Kronberg: 'Cold plasma particle populations'
  3. 1:20 PM - 1:35 PM. Scene-setting talk by Thom Moore: 'Cold Plasma Impacts (on Magnetospheric Physics)'
  4. 1:35 PM - 2:30 PM. Open discussion
  • Details:

Contributed talks are welcome as part of the discussion. They will be limited to one-slide/5-minutes per contribution and we will keep the list of contributions on the FG website. Please frame your contribution around one of the following discussion topics:

  1. What are the open questions associated with the cold-plasma in magnetospheric physics?
  2. What kind of measurements are necessary to fully understand the role of the cold plasma in magnetospheric physics?
  3. How do we include the impact of the cold-plasma in magnetospheric modeling, including global codes?
  4. What kind of activities would you like to see carried out in this cold-plasma FG?

Please contact Gian Luca Delzanno (delzanno@lanl.gov) to arrange your contribution!

  • Contributed talks:
  • What are the open questions associated with the cold-plasma in magnetospheric physics?
    1. Jerry Goldstein, SWRI, Open Questions About Cold Plasma
    2. Naritoshi Kitamura, University of Tokyo, Cold ion outflow and the transport to the inner magnetosphere
    3. Shannon Hill, University of Michigan, Cold Plasma Heating by Waves in the Inner Magnetosphere
  • What kind of measurements are necessary to fully understand the role of the cold plasma in magnetospheric physics?
    1. Jerry Goldstein, SWRI, What Measurements are Needed to Answer Open Questions About Cold Plasma?
    2. Justin Lee, Aerospace, Directly measuring cold ions for EMIC wave studies


  • How do we include the impact of the cold-plasma in magnetospheric modeling, including global codes?
  • What kind of activities would you like to see carried out in this cold-plasma FG?

3) Joint session on the impact of the cold plasma in the inner magnetosphere

with the following FGs

  • Self-Consistent Inner Magnetospheric Modeling
  • System Understanding of Radiation Belt Particle Dynamics through Multi-spacecraft and Ground-based Observations and Modeling
  • Date: Thursday, July 23rd 2020, 3:00 PM - 4:30 PM EDT
  • Structure of the session:
  1. 3:00 PM - 3:15 PM. Scene-setting talk by Dan Welling: 'A Global Modeler's View of the Importance of Cold Ion Populations'
  2. 3:15 PM - 3:30 PM. Scene-setting talk by Lynn Kistler: 'Warm (<1 keV) plasma in the inner magnetosphere: characteristics and effects'
  3. 3:30 PM - 4:30 PM. Contributed talks and open discussion
  • Details:

Contributed talks will be limited to 4 slides per contribution and we will keep the list of contributions on the FG website. Please contact Gian Luca Delzanno (delzanno@lanl.gov) to arrange your contribution!

Some topics of interest:

  1. wave-particle interaction physics: how cold plasma affects wave properties, including heating
  2. outflows, warm cloak, plumes
  3. pulsating aurora
  4. how local/microscopic codes can inform global codes
  • Contributed talks:
  1. Mike Henderson, Los Alamos National Laboratory, Observations of STEVE-like emissions and potential Generation Mechanism
  2. Xiangning Chu, LASP, Acceleration of cold ions and electrons at a sharp plasmapause boundary
  3. Oleksiy Agapitov, University of California Berkeley, The effects of cold plasma density variations for timescales of electron quasi‐linear diffusion by chorus and hiss waves
  4. Suk-Bin Kang, NASA Goddard Space Flight Center, EMIC waves modeling and cold plasma parameters
  5. Ying Zou, University of Alabama Huntsville, Geospace plume and its impact on dayside reconnection

Cold-plasma white papers submitted to the Helio2050 workshop

  • G. L. Delzanno, J. E. Borovsky, N. Buzulukova, C. R. Chappell, M. Denton, P. Fernandes, R. Friedel, D. Gallagher, J. Goldstein, M. Henderson, B. Larsen , V. Jordanova , T. Moore, D. Reisenfeld, V. Roytershteyn, R. Skoug, and R. Varney, The Need to Understand the Cold-ion and Cold-electron Populations of the Earth’s Magnetosphere: Their Origin, Their Controlling Factors and Their Impact on the System

https://www.hou.usra.edu/meetings/helio2050/pdf/4033.pdf

  • L. Andersson, S. Thaller, and D. M. Malaspina, Bulk Plasma Dynamics on Large Scales

https://www.hou.usra.edu/meetings/helio2050/pdf/4011.pdf

  • J. Goldstein, D. L. Gallagher, P. Molyneux, and G. D. Reeves, Core-Plasma Refilling and Erosion: Science Justification

https://www.hou.usra.edu/meetings/helio2050/pdf/4063.pdf

Workshop 'The Impact of the Cold Plasma Populations in The Earth's Magnetosphere'

Date: Monday, September 28th - Friday, October 2nd 2020

Organizers: Gian Luca Delzanno, Joe Borovsky

Link: https://cnls.lanl.gov/CPP20/

@ a glance: About 100 colleagues registered for the workshop, which comprised a total of 47 talks covering the whole spectrum of impacts of the cold plasma in magnetospheric physics. Five one-hour-long group discussions were centered around the following topics:

  1. The importance of cold electrons in magnetospheric physics
  2. What do we need to know about outflow physics?
  3. What would be a good set of cold plasma science targets/challenges for the community?
  4. Measurement concepts: how do we measure cold ion and cold electron distribution functions?
  5. Do we need a dedicated cold-plasma space mission?

EVENTS IN 2021

Slack Cold-Plasma channel

A new Slack channel to foster cold-plasma activities and collaborations has been created:

https://coldplasmascience.slack.com/

Please join!

The Online Cold Plasma Seminar Series

Speakers in 2021

  • June 2, Mats André, Swedish Institute of Space Physics, Cold Ionospheric Ions in the Magnetosphere: Where They Are and What They Do
  • June 16, Rick Chappell, Vanderbilt University, Ionospheric Ions as a Driver of the Dynamics of Substorms and Storms
  • July 7, Jerry Goldstein, Southwest Research Institute, Ions of the Plasmasphere, Trough, and Cloak
  • July 21, Maria Usanova, University of Colorado Boulder, EMIC wave observations on the Van Allen Probes: recent results
  • August 4, Densheng Han, Tongji University, Dayside diffuse Aurora and the cold-plasma structuring
  • August 18, Mike Hartinger, Space Science Institute, Relationship between ULF wave power and plasma density: THEMIS observations and numerical simulations
  • September 15, Joe Huba, Syntek Technologies, High Resolution Ionosphere/Plasmasphere/Thermosphere Modeling Studies: Plasmasphere Ducts/Irregularities
  • October 6, Sergio Toledo-Redondo, University of Murcia, Spain, Impacts of ionospheric-originating ions on magnetic reconnection at the magnetopause and magnetotail
  • October 20, Jonathan Krall, Naval Research Laboratory, Ring-current heating of the ionosphere/plasmasphere and related H+ and O+ outflows
  • November 3, Raluca Ilie, University of Illinois Urbana Champaign, How the outflowing ionospheric N+ is altering the near-Earth cold plasma dynamics
  • November 17, Natalia Buzulukova, NASA Goddard Space Flight Center, Warm plasma population in the inner magnetosphere: what we know and do not know so far
  • December 1, Naomi Maruyama, University of Colorado Boulder, Physical modeling of journey of cold plasma populations in geospace


For more information: https://www.lanl.gov/org/ddste/aldsc/theoretical/applied-mathematics-plasma-physics/cold-plasma-seminars.php

Session at Mini-GEM 2021

  • Focus on new cold-plasma mission concepts and measurement techniques, and new cold-plasma science
  • Date: Wednesday, January 20th 2021, 10:00 AM - 12:00 PM Eastern Time
  • Structure of the session:
  1. 10:00 AM - 10:05 AM. Announcements (Helio2050 white papers, Frontiers cold-plasma special issue, Rick Chappell’s 'Magnetosphere Online' seminar on January 25)
  2. 10:05 AM - 10:25 AM. David Malaspina: Cold-plasma tomography mission
  3. 10:25 AM - 10:45 AM. Jerry Goldstein: TREO mission
  4. 10:45 AM - 11:00 AM. Justin Lee: Composition measurements and EMIC waves
  5. 11:00 AM - 11:15 AM. Pedro Resendiz Lira: Modeling of cold-electron measurements
  6. 11:15 AM - 11:25 AM. Alex Chartier: SAMI3 and Iridum/AMPERE
  7. 11:25 AM - 11:35 AM. Christian Bagby-Wright: Plasmasphere recirculation simulations
  8. 11:35 AM - 11:45 AM. Gian Luca Delzanno: Cold electrons and whistler waves
  9. 11:45 AM - 12:00 PM. Closing remarks

Sessions at Virtual GEM 2021

1) Focus Group discussion on planning activities for the Decadal Survey

  • Date: Monday, July 26th 2021, 1:00 PM - 2:30 PM EDT
  • Structure of the session:
  1. 1:00 PM - 1:05 PM. Short introduction of the session by Gian Luca Delzanno;
  2. 1:05 PM - 1:10 PM. Brief overview of the PILOT mission concept, David Malaspina;
  3. 1:10 PM - 1:15 PM. Brief overview of the SOURCE mission concept, Philippa Molyneux;
  4. 1:15 PM - 2:30 PM. Open discussion
  • Details:

The discussion will be geared towards white papers on cold-plasma topics that should be submitted to the Decadal Survey and possible team building. If you are planning to submit a cold-plasma white paper, please contact Gian Luca Delzanno (delzanno@lanl.gov) and make sure to participate to the discussion!

2) Focus Group discussion on near-term opportunities to advance cold-plasma science

  • Date: Monday, July 26th 2021, 3:00 PM - 4:30 PM EDT
  • Structure of the session:
  1. 3:00 PM - 3:10 PM. Short introduction of the session by Joe Borovsky;
  2. 3:10 PM - 4:30 PM. Open discussion
  • Details:

We would like to discuss unsolved problems in cold-plasma physics and funding opportunities [such as LWS (FST #2) and GEM] that could be pursued to build teams and tackle those problems. Examples of possible topics are cold-plasma recirculation, the cloak, cold-plasma impacts, wave-particle interactions, ...

3) Joint session on current research/open problems relating ULF waves and cold-particle populations

with the following FG

  • ULF Wave Modeling, Effects, and Applications (UMEA)
  • Date: Friday, July 30th 2021, 1:00 PM - 2:30 PM EDT
  • Structure of the session:
  1. 1:00 PM - 1:25 PM. Scene-setting talk by Richard Denton, Coupling Between ULF Waves and Cold Plasma
  2. 1:25 PM - 2:00 PM. <>5 minutes presentation + 2 minutes Q&A for each speaker
  3. 2:00 PM - 2:30 PM. Open discussion

List of speakers:

  • Alex Degeling, Modeling ULF Waves Trapped in a Plasmaspheric Density Plume
  • Eun Hwa Kim, Can Electromagnetic Ion Cyclotron Waves Propagate to the Ground?: 2D Full Wave Simulation
  • Bob Lysak, Relation of plasmaspheric cavity modes to Pi2 pulsations in an asymmetric plasmasphere
  • Yixin Hao, ULF wave-cold plasma interaction
  • Mike Hartinger, The relationship between global ULF wave properties and radial Alfven speed profile<>
  • Details:

Please contact Maria Usanova (Maria.Usanova@lasp.colorado.edu) to arrange your contributed talks! We will keep the list of contributions on the FG website.

Session at AGU Fall Meeting 2021

SM006 - Cold plasmas in the magnetosphere-ionosphere system: drivers, impacts, open questions, new measurements techniques and new space missions

Conveners:

  • Gian Luca Delzanno, Los Alamos National Laboratory, Los Alamos, NM, United States
  • Joseph Borovsky, Space Science Institute, Los Alamos, NM, United States
  • Elena A Kronberg, Max Planck Institute for Solar System Research, Gottingen, Germany
  • Cecilia Norgren, University of Bergen, Space Plasma Physics Group, Bergen, Norway

https://agu.confex.com/agu/fm21/prelim.cgi/Session/122504

Session at Mini-GEM 2021

  • Focus on recent technical progress on cold-plasma research
  • Date: Sunday, December 12th 2021, 3:45 - 5:15 PM US Central Time
  • Structure of the session:
  1. Scene-setting overview of cold-plasma impacts by Sergio Toledo Redondo
  2. Short technical talks on all aspects of cold-plasma research -- Max. 8 minutes each including questions
  3. Open discussion

Please contact Gian Luca Delzanno (delzanno@lanl.gov) to schedule your technical contributions to the session. The list of contributions will be updated here as they are received.

List of speakers:

  • Joe Borovsky, The Production of Cold Protons from the Hydrogen Geocorona: Charge Exchange, Photoionization, and Electron-Impact Ionization
  • Justin H. Lee, Ongoing investigations of cold ions of ionospheric origin and EMIC waves
  • Jerry Goldstein, Possible new <100eV outer magnetospheric ion population seen by MMS HPCA
  • Jonathan Krall, N+ outflows associated with the cold O+ torus/shell
  • Naomi Maruyama, What can the Coupled CIMI-IPE model do to address the journey of cold plasma in geospace?
  • Alex Glocer, Modeling Ion Conic Formation at Earth and Jupiter
  • Naritoshi Kitamura, On the relationship between energy input to the ionosphere and the ion outflow flux under different solar zenith angles

Zoom link:
Time: Dec 12, 2021 02:15 PM America/Boise

Join Zoom Meeting: https://us02web.zoom.us/j/81297258256?pwd=aEJwc1RNK1Y5b1VtUTRXanFWdzNvdz09

Meeting ID: 812 9725 8256
Passcode: 878085
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EVENTS IN 2022

The Online Cold Plasma Seminar Series

https://www.lanl.gov/org/ddste/aldsc/theoretical/applied-mathematics-plasma-physics/cold-plasma-seminars.php

Speakers in 2022

  • January 5, Brian Walsh, Cold Magnetospheric Plasma and Dayside Coupling
  • January 19, Jean-Francois Ripoll, The electron plasma density measured by the Van Allen Probes
  • February 2, Jing Liao, Access of Ionospheric Ions to the Plasma Sheet
  • February 16, Viviane Pierrard, The dynamics of the plasmasphere and its links to the radiation belts
  • March 2, Richard Denton, Measuring the Total Density in the Magnetosphere
  • March 16, Naritoshi Kitamura, On the relationship between energy input to the ionosphere and the ion outflow flux under different solar zenith angles
  • April 20, John Lyon, Multifluid Simulations of the Magnetosphere
  • May 4, Jacob Bortnik, The effects of cold plasma density on wave-particle interactions
  • May 18, Justin H. Lee, On the need for more frequent cold ion measurements: Perspectives from investigating EMIC waves
  • June 1, Ying Zou, Geospace Plume and Its Impact on Dayside Magnetopause Reconnection Rate
  • June 15, Jörg-Micha Jahn, When life gives you lemons: How to squeeze Van Allen Probes in situ particle observations beyond what you might have thought possible to learn about cold ions and global plasmasphere dynamics
  • July 6, Dennis Gallagher, Is Plasmasphere Erosion More Than One Thing?
  • July 20, Xiangning Chu, Unraveling the mystery of plasmaspheric dynamics using machine learning approach
  • August 3, Cecilia Norgren, On the presence and thermalization of cold plasma in the reconnection exhaust
  • August 17, Dan Welling, Global Consequences of Cold Plasma in the Magnetosphere-Ionosphere System
  • September 21, Toshi Nishimura, Multi-Scale Density Structures in the Plasmaspheric Plume
  • October 5, Rhyan Sawyer, Low Energy Ions Within the Cusp: TRICE 2 Observations
  • November 2, Elena Kronberg, Circulation of ionospheric ions and their impact on the magnetospheric dynamics
  • November 16, Wen Li, Whistler-mode Waves in the Earth’s Plasmasphere and Plumes and Their Effects on Energetic Electron Loss

Sessions at GEM Workshop 2022

https://gemworkshop.org

1) Joint session on the impact of the cold plasma on wave-particle interactions

with the following FG

  • System Understanding of Radiation Belt Particle Dynamics through Multi-spacecraft and Ground-based Observations and Modeling
  • Self-Consistent Inner Magnetospheric Modeling
  • Magnetospheric Sources of Particle Precipitation and Their Role on Electrodynamic Coupling of Magnetosphere-Ionosphere-Thermosphere Systems
  • Date: Wednesday, June 22nd 2022, 3:30 PM - 5:00 PM Hawaii time
  • Structure of the session:
  1. 3:30 PM - 3:55 PM. Scene-setting talk by Jacob Bortnik (20 minutes presentation + 5 minutes Q&A);
  2. 3:55 PM - 5:00 PM. Presentations. Format: 5 minutes presentation + 3 minutes Q&A each, 4 slides maximum.

List of speakers:

  • Yuri Shprits, The controlling effect of cold plasma density on acceleration and loss of ultra-relativistic electrons
  • Hyunju Connor, Storm-time variability of exosphere neutral density
  • David Hartley, Using Van Allen Probes and Arase Observations to Build A New Plasma Density Model for the Inner Zone
  • Greg Cunningham, Effect of a New Plasma Density Model on Diffusion Coefficients for Energetic Electrons in the Inner Zone
  • Scott Thaller, Empirical plasmapause models deduced from Van Allen Probes measurements
  • Justin Lee, Investigating influences of cold and hot ion composition on EMIC waves
  • Solene Lejosne, Drift loss cone filling and energetic electron dynamics in the inner radiation belt and below during the September 2017 Storm
  • Richard Denton, Models for magnetospheric mass density

Details: Please contact Gian Luca Delzanno (delzanno@lanl.gov) if you want to contribute to the session

2) Session on recent progress on cold plasma science

  • Date: Thursday, June 23rd 2022, 1:30 PM - 3:00 PM Hawaii time
  • Structure of the session:
  1. 1:30 PM - 1:55 PM. Scene-setting talk by Alex Glocer (20 minutes presentation + 5 minutes Q&A);
  2. 1:55 PM - 3:00 PM. Presentations. Format: 5 minutes presentation + 3 minutes Q&A each, 4 slides maximum.

List of speakers:

  • Scott Thaller, PILOT and PlaTo mission concepts
  • Lynn Kistler, The changing source of ionospheric plasma during a geomagnetic storm
  • Chih-Ping Wang, Mesoscale enhancements of plasma cloak
  • Raluca Ilie, The effect of ring current ion composition on the production and evolution of the cold H+ population
  • Xueyi Wang, Investigation of outflow dynamics in magnetosphere by 3-D global hybrid simulation
  • Xiangning Chu, Unraveling the mystery of plasmaspheric dynamics using an artificial intelligence approach
  • Leonardo Regoli, Temporal evolution of O+ population in the inner magnetosphere during geomagnetic storms as observed by the Magnetospheric Multiscale Mission

Details: All types of contributions relevant to cold-plasma research are welcome. Please contact Gian Luca Delzanno (delzanno@lanl.gov) if you want to contribute to the session.

3) Session on white paper needs for the decadal survey in space physics

  • Date: Thursday, June 23rd 2022, 3:30 PM - 5:00 PM Hawaii time
  • Structure of the session:
  1. 3:30 PM - 5:00 PM. Open discussion with panelists and broader community. Format: 7 minutes for each panelist to introduce the white paper they are coordinating. Q&A/discussion at the end.

List of confirmed panelists:

  • Scott Thaller,
  • Alex Glocer,
  • Maria Usanova,
  • Carlos Maldonado,
  • Jerry Goldstein,
  • Mike Henderson
  • Details:

The discussion will focus on 1) what white papers are needed; 2) what needs to be in them and 3) who is interested in contributing to them. Panelists will discuss some of the white papers under development. If you are thinking of a white paper with a cold plasma theme, please consider joining the panel or simply make sure to bring it up during the discussion!

Virtual Session at Mini-GEM 2022

  • Date: Wednesday, December 7th 2022, 11:00 AM - 12:30 PM Eastern time
  • Structure of the session:
  1. 11:00 AM - 11:20 AM. Scene-setting talk by Phil Erickson on the role of the cold plasma on MI coupling
  2. 11:20 AM - 11:45 AM. Discussion
  3. 11:45 AM - 12:05 PM. Scene-setting talk by Maria Usanova on energy-exchange processes involving the cold plasma
  4. 12:05 PM - 12:30 PM. Discussion
  • Details:

Please join the session and share your opinion on current understanding, outstanding issues and future needs for these two topics!

  • Zoom link:

https://urldefense.com/v3/__https://us02web.zoom.us/j/83597990331?pwd=bzFPRFd6M0o3cktNOEZmZ1Vza0JWZz09__;!!Bt8fGhp8LhKGRg!HPL-hm6TT3Safdt_Es55JeHmNfgLoI6qtv_JHvM76ranBYOR22xbIk-k6-mv1cX71mHh8vU5FIWIaGAGhGomtkVN$

  1. Meeting ID: 835 9799 0331
  2. Passcode: 512289

EVENTS IN 2023

The Online Cold Plasma Seminar Series

https://www.lanl.gov/org/ddste/aldsc/theoretical/applied-mathematics-plasma-physics/cold-plasma-seminars.php

Speakers in 2023

  • April 19, Scott Thaller, Relationship of the statistical Total Density, Electric Field, ExB flow, and Low Energy Ion Pressures on global and meso scales in the inner magnetosphere as observed by the Van Allen Probes
  • May 17, David Malaspina, Plasma Imaging, Local measurement, and Tomographic experiment (PILOT), a Mission Concept Enabling Transformational Multi-scale Observations of Cold Plasma Dynamics in Earth's Magnetosphere
  • June 21, Yuri Shprits, Ultra-relativistic Electrons in the Van Allen Radiation Belts
  • July 19, Louis Richard, Fast Ion Isotropization by Current Sheet Scattering in Magnetic Reconnection Jets
  • August 16, Michael G. Henderson, Coupling Between Intense Meso-Scale Auroral Streamer Structures, the Concurrent Generation of Giant Undulations and STEVE Emissions, and Intermixing of Cold and Hot Plasma Populations in the Dusk to Pre-Midnight Plasmapause Region
  • September 20, Allison Jaynes, The role of cold plasma in diffuse-like auroral precipitation and M-I coupling
  • October 18, Dave Hartley, Observations and Modeling of Cold Plasma Density, and How it Impacts Wave Dynamics and Measurements
  • November 15, Alex Glocer, Studying the Origin of Near-Earth Plasma

Sessions at GEM Workshop 2023

https://gemworkshop.org

Please contact Gian Luca Delzanno (delzanno@lanl.gov) if you want to contribute to the sessions!

1) Recent progress in cold plasma research

Time: Monday June 12th, 10:30 AM - 12:00 PM Pacific Time

Location: Coast ballroom

Zoom link: https://urldefense.com/v3/__https://us02web.zoom.us/j/81863910380?pwd=NElBcnB0SXNsNzJReVZuSFhlQXJRdz09__;!!Bt8fGhp8LhKGRg!F8R3sh1wxF5TdO5Kf0y7-spnxTtXf-Uol32gxFQ-6EwgjosFluoF0UK9pi_guegxs-92RQX11TiwSa7bH2wFlnTh$

Meeting ID: 818 6391 0380

Passcode: 425860

Find your local number: https://urldefense.com/v3/__https://us02web.zoom.us/u/klOjilRuz__;!!Bt8fGhp8LhKGRg!F8R3sh1wxF5TdO5Kf0y7-spnxTtXf-Uol32gxFQ-6EwgjosFluoF0UK9pi_guegxs-92RQX11TiwSa7bH6yHS7mh$

Structure of the session:

  • Each speaker has 15 minutes TOTAL, including questions. Please allocate at least 5 minutes for Q&A.

List of speakers:

  1. 10:30-10:45 AM. Naritoshi Kitamura (virtual), Energy input to the ionosphere and ELF waves during geomagnetic storm events in the cusp
  2. 10:45-11:00 AM. Myeong Joon Kim, MMS Observations of Warm-Ion (E < 100 eV) Heating inside Plasmaspheric Plumes
  3. 11:00-11:15 AM. David Hartley, Exploring Plasma Density Variations at low L
  4. 11:15-11:30 AM. Hyunju Connor, Storm-time exospheric hydrogen density variation in plasmasphere and ring current
  5. 11:30-11:45 AM. Jeewoo Park (virtual), The possibility of the IBEX ENA Observations providing the in-situ measurements of the outward H fluxes in the outer exosphere

Details: All types of relevant contributions are welcome.

2) The impact of the cold plasma on pulsating and diffuse aurora

Time: Monday June 12th, 1:30 PM - 3:00 PM Pacific Time

Location: Coast ballroom

Zoom link: https://urldefense.com/v3/__https://us02web.zoom.us/j/81863910380?pwd=NElBcnB0SXNsNzJReVZuSFhlQXJRdz09__;!!Bt8fGhp8LhKGRg!F8R3sh1wxF5TdO5Kf0y7-spnxTtXf-Uol32gxFQ-6EwgjosFluoF0UK9pi_guegxs-92RQX11TiwSa7bH2wFlnTh$

Meeting ID: 818 6391 0380

Passcode: 425860

Find your local number: https://urldefense.com/v3/__https://us02web.zoom.us/u/klOjilRuz__;!!Bt8fGhp8LhKGRg!F8R3sh1wxF5TdO5Kf0y7-spnxTtXf-Uol32gxFQ-6EwgjosFluoF0UK9pi_guegxs-92RQX11TiwSa7bH6yHS7mh$

Structure of the session:

  • 1:30-2:00 PM. Scene setting talk: The role of cold plasma in auroral precipitation and M-I coupling, Allison Jaynes
  • 2:00-3:00 PM. Audience discussion.

Details: People interested in the connection between cold plasma and auroral forms (and more generally magnetosphere-ionosphere coupling) are strongly encouraged to participate in the discussion!

3) Session on progress in cold plasma science relevant to inner magnetospheric modeling

with the following FG

  • Self-Consistent Inner Magnetospheric Modeling

Time: Tuesday June 13th, 3:30 PM - 5:00 PM Pacific Time

Location: Pacific A ballroom

List of speakers:

  1. Miroslav Hanzelka, Full-wave modeling of ducted and reflected EMIC waves in the plasmatrough and plasmaspheric plumes
  2. Michael Hartinger, Early results from the HARP citizen science project: Implications for ULF wave and cold plasma research
  3. Matthew Cooper, An Update on the MEIM empirical inner mag model
  4. Justin Holmes, Exploring the impacts of cold electrons on magnetospheric wave-particle interactions
  5. Oleksiy Agapitov, New Approach to Wave Models: How Cold Plasma Determines Efficiency of Wave-Particle Interactions in the Radiation Belts
  6. Greg Cunningham, A significant correction to the 50-year-old theory for calculation of quasilinear diffusion coefficients used in heliophysics

Details: All types of relevant contributions are welcome (including observational studies pointing to the need for better models of the cold plasma).

4) The future of cold plasma research

Time: Wednesday June 14th, 10:30 AM - 12:00 PM Pacific Time

Location: Coast ballroom

Structure of the session:

  • Contributed talks + audience discussion.
  • Each speaker has 15 minutes TOTAL, including questions and comments. Please have a final slide emphasizing the ‘what’, ‘why’, ‘why now’ and ‘how’ of a given idea.

List of speakers:

  1. Justin Lee, MMS measurements to motivate upcoming data/modeling studies and future innovation on cold plasma
  2. Mei-Yun Lin, The Critical Role of N+ ions in the Transport of Global Ionospheric Outflow
  3. Pedro Resendiz, Cold electron measurements in the Magnetosphere
  4. Rick Chappell, 'Watching' Cold Ionospheric Outflowing Ions Become Energetic Magnetospheric Plasma—Warm Plasma Cloak, Plasma Sheet, and Ring Current—A Discovery of More Than 20 Years Ago
  5. Dan Welling, Recirculation of the Plasmasphere Plume: Future Considerations
  6. Naritoshi Kitamura (virtual), 1) Cold plasma at the near-Earth lobe and PSBL during geomagnetic storms; 2) Upper limit of local ion outflow flux; 3) Driving mechanisms of heavy ion outflow


Mini-GEM session on Dec. 10th 2023

  • Topic: What future research is needed for the cold plasma, with a focus on the outer magnetosphere
  • Date: Sunday, December 9th 2023, 13:45 PM - 15:15 PM US Pacific time
  • Where: Holiday Inn San Francisco – Golden Gateway; redwood conference room
  • Format: Discussion session with panelists, remote connection available
  • Panelists: Lynn Kistler, Dan Welling, Sergio Toledo-Redondo, Roger Varney
  • Structure of the session:
  1. 13:45 PM - 13:48 PM. Introductory remarks by Rick Chappell
  2. 13:48 PM - 14:36 PM. Panel discussion
  3. 14:36 PM - 15:12 PM. Audience discussion
  4. 15:12 PM - 15:15 PM. Concluding remarks by Jeremy Dargent
  • Zoom link:

https://us02web.zoom.us/j/84831545415?pwd=T1oxM0xzTUtQZExjQzZkc1JDSGdRQT09

Meeting ID: 848 3154 5415

Passcode: 693681

  • Details:

The session is organized in collaboration with Jeremy Dargent and Rick Chappell. Please join the session and share your opinion!

EVENTS IN 2024

The Online Cold Plasma Seminar Series

https://www.lanl.gov/org/ddste/aldsc/theoretical/applied-mathematics-plasma-physics/cold-plasma-seminars.php

Speakers in 2024

  • February 21, Jeremy Dargent, Impact of cold ions on magnetic reconnection: reconnection rate and energy budget analysis
  • March 20, Noora Partamies, Pulsating aurora structure and evolution
  • April 17, Lauren Blum Global plasmaspheric dynamics and the role of cold plasma in radiation belt loss
  • May 15, Eric Donovan
  • June 19, Oleksiy Agapitov
  • July 17, Phil Erickson
  • August 21, Roger Varney
  • September 18, Kareem Sorathia

Sessions at GEM Workshop 2024

https://gemworkshop.org

Please contact Gian Luca Delzanno (delzanno@lanl.gov) if you want to contribute to the sessions!

1) Recent progress in cold plasma research

Time: Monday June 24th, 1:30 PM - 3:00 PM Mountain Time

Location: S345

Zoom link: https://us02web.zoom.us/j/88049394330?pwd=JOks97lT2tS81gTYaRgEUSPdOZrPQ9.1

Meeting ID: 880 4939 4330

Passcode: 399624

Find your local number: https://us02web.zoom.us/u/ki0AcB5wp

Structure of the session:

  • 1:30-1:40 PM. Introduction and CP posters
  • 1:40-2:00 PM. Niloufar Nowrouzi, Interhemispheric Asymmetry in the Seasonal Ionospheric Outflow/ Differences in ionospheric O+ and H+ outflow during storms with and without sawtooth oscillations
  • 2:00-2:15 PM. David Hartley, Van Allen Probes and Arase Observations of the Plasma Density at low L: Model Development and Comparisons with Ionospheric Radar and Sounder Data
  • 2:15-2:30 PM. Wenyao Gu, Propagation of Very Oblique Chorus Waves Near a Plasmaspheric Plume Boundary
  • 2:30-2:45 PM. Joon Kim Myeong, Statistical Analysis of The Low-Energy Plasma Contribution to the Linear Instability of Whistler-Mode Chorus Waves in the Earth’ Magnetosphere
  • 2:45-3:00 PM. Tyler Bishop, Statistical study of refilling and erosion at all L shells and local times

Details: All types of relevant contributions are welcome. We will reserve the first 10 minutes of the session for introduction of posters relevant to the CP focus group and for students, postdocs and early-career researchers who want to introduce themselves to the community.

2) Future research needs and collaborations

Time: Monday June 24th, 3:30 PM - 5:00 PM Mountain Time

Location: S346

Zoom link: https://us02web.zoom.us/j/88049394330?pwd=JOks97lT2tS81gTYaRgEUSPdOZrPQ9.1

Meeting ID: 880 4939 4330

Passcode: 399624

Find your local number: https://us02web.zoom.us/u/ki0AcB5wp

Structure of the session:

  • 3:30-5:00 PM. Discussion!

List of speakers:

  1. David Malaspina, Using Radio Frequency Signals to Probe the Plasmasphere
  2. Mei-Yun Lin, The response of the high-latitude ionospheric outflow to the dynamic terrestrial exosphere

Details: We will take stock of where we are and what we need for the future, starting for the table of cold plasma impacts at the beginning of this webpage. Please join the discussion and share your opinion! Contributions will be limited to 3 slides maximum, plus a final summary slide emphasizing ‘what’, ‘why’, ‘why now’ and ‘how’ of a given idea.

3) Missing/not-understood cold plasma processes in the Earth's magnetosphere that will need to be included in future modeling efforts

with the following FGs

  • Self-Consistent Inner Magnetospheric Modeling
  • System Understanding of Radiation Belt Particle Dynamics through Multi-spacecraft and Ground-based Observations and Modeling

Time: Thursday June 27th, 1:30 PM - 3:00 PM Mountain Time

Location: S346

Zoom link: https://bostonu.zoom.us/j/95125940873?pwd=0tBA3VXKqW7xKP8ovhrHVBJz746KdA.1

Meeting ID: 951 2594 0873

Passcode: 221756

Structure of the session:

  • 1:30-1:40 PM. Jeremy Dargent, Heating and mixing of cold plasma at the dayside magnetopause
  • 1:40-1:50 PM. Hyunju Connor, Exospheric density variabilities in the inner magnetosphere during solar minimum and maximum: MATE simulation results
  • 1:50-2:00 PM. Justin Lee, Statistical analysis and modeling of magnetospheric ion composition during EMIC wave activity
  • 2:00-2:10 PM. Shujie Gu, The role of cold oxygen ions in the EMIC wave growth
  • 2:10-2:20 PM. Ning Kang: The principal role of chorus ducting for night-side relativistic electron precipitation
  • 2:20-2:30 PM. Poorya Hosseini, Backward Test Particle Simulation of Nonlinear Cyclotron Wave-Particle Interactions in the Radiation Belts
  • 2:30-3:00 PM. Discussion

Details: All types of contributions highlighting missing/not-understood cold-plasma processes that will need to be included in the next-generation magnetospheric modeling are welcome.

4) How can we use machine learning techniques to make progress in inner magnetospheric research?

with the following FGs

  • Self-Consistent Inner Magnetospheric Modeling
  • System Understanding of Radiation Belt Particle Dynamics through Multi-spacecraft and Ground-based Observations and Modeling

and with the Resource Group

  • Machine Learning as it pertains in the Geospace Environment

Time: Thursday June 27th, 3:30 PM - 5:00 PM Mountain Time

Location: S346

Zoom link: https://unh.zoom.us/j/93264767597?pwd=tjaJrNendpMdMGP8aaYbRKrIGnCVbO.1

Structure of the session:

  • 3:30-4:00 PM. Introduction by IMAG and ML Focus Groups of goals and objectives
  • 4:00-5:00 PM. Contributed talks and discussion

List of speakers:

Details: Contributions and suggestions highlighting what should we do in the next few years are welcome.

5) The connections between cold plasma and aurora

with the following FGs

  • Mesoscale drivers of the nightside transition region: ionospheric and magnetotail evaluations
  • Magnetospheric Sources of Particle Precipitation and Their Role on Electrodynamic Coupling of Magnetosphere-Ionosphere-Thermosphere Systems

Time: Friday June 28th, 10:30 AM - 12:00 PM Mountain Time

Location: G&G

Zoom link: https://alaska.zoom.us/j/88189840673?pwd=qVbx62Vao3b03OmRbfK1oQPEe4hPFk.1

Passcode593419

Structure of the session:

  • 10:30-10:50 AM Scene-setting talk: Shasha Zou
  • 10:50-11:10 AM Scene-setting talk: Eric Donovan
  • 11:10-11:20 AM Dong Lin, The role of inner magnetospheric heat flux in SAR arc formation
  • 11:20-11:30 AM Vivian Cribb, Solar Wind Drivers of Auroral Omega Bands
  • 11:30 AM-12:00 PM Discussion!

Details: All types of contributions highlighting what we know and what we do not know on the connections between cold plasma and aurora are welcome.

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