FG: 3D Ionospheric Electrodynamics and Its Impact on the Magnetosphere-Ionosphere-Thermosphere Coupled System

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(2019 GEM Workshop - updated on May 28, 2019)
(2019 GEM Workshop - updated on Jun 12, 2019)
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# Session 3 (joint with MMV): 3:30 - 5:00pm on Tuesday (06/25)
# Session 3 (joint with MMV): 3:30 - 5:00pm on Tuesday (06/25)
# Session 4 (joint with UMEA): 3:30 - 5:00pm on Wednesday (06/26)
# Session 4 (joint with UMEA): 3:30 - 5:00pm on Wednesday (06/26)
Dear speakers,
Here is the tentative schedule for the IEMIT sessions. This schedule may change, so please check the schedule again near the GEM workshop dates.
Thank you very much for your participation.
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Here is the speaker list. Please prepare 5min talk + 5min discussion. We will have 20min discussion at the end.
'''''Here is the speaker list'''.'' Please prepare 5min talk + 5min discussion. We will have 20min discussion at the end.
# Overview from the CEDAR conductance challenge
# Overview from the CEDAR conductance challenge
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# Bob Robinson: results from a new empirical ionospheric electrodynamics model
# Bob Robinson: results from a new empirical ionospheric electrodynamics model
# Hyunju Connor: OpenGGCM results
# Hyunju Connor: OpenGGCM results
# Kevin Pham: CMIT-PWOM results
# Kevin Pham: CMIT-IPWM results
# Doga Ozturk: GTIM empirical results.
# Doga Ozturk: GTIM empirical results.

Revision as of 19:39, 12 June 2019


Focus Group Chairs

  • Hyunju Connor (hkconnor@alaska.edu)
  • Bin Zhang (binzheng@ucar.edu)
  • Gang Lu (ganglu@ucar.edu)
  • Haje Korth (haje.korth@jhuapl.edu)


  • Five years (2017-2021)

Research area

  • Magnetosphere – Ionosphere Coupling
  • Global System Modeling


The magnetosphere is one of the major energy sources that drive the Earth's upper atmosphere. During geomagnetic storms, the magnetosphere transmits significant energy and momentum into the upper atmosphere via field-aligned currents, Poynting flux, and auroral precipitation. In response, the ionospheric electric potentials and conductances increase, the thermosphere heats and expands, and the global atmospheric circulation changes. The ionosphere – thermosphere feedback can also influence magnetospheric dynamics. The heated thermosphere can enhance ionospheric outflows and change magnetic reconnection rates. The modified global circulation redistributes plasmas and neutrals, alters the ionospheric conductance and electric field, and thus changes the magnetospheric convection and reconnection. Although strong coupling of the magnetosphere – ionosphere – thermosphere (MIT) system are widely recognized by the space science community, studying this coupling dynamics as a whole global system has yet to be conducted comprehensively. To magnetospheric scientists, the ionosphere is treated as a two- dimensional, low-altitude boundary. The mass and momentum exchanges between the magnetosphere and the IT system are often ignored. More realistic calculation of upper atmospheric dynamics is necessary in the global magnetosphere - ionosphere models. To upper atmospheric scientists, simple statistical convection patterns and empirical auroral precipitation fluxes driven by the Kp and hemispheric power indices are commonly used to infer complicated magnetospheric dynamics. As a consequence, global IT models (e.g. CTIPe, TIEGCM, and GTIM) cannot sufficiently capture the spatiotemporal dynamics of magnetospheric energy sources during strong geomagnetic activities, thus limiting the predictive capability of these models when it is most needed. More realistic calculation of magnetospheric energy input is necessary. In recent years, the coupled magnetosphere – ionosphere – thermosphere (MIT) models (e.g. OpenGGCM- CTIM, LFM-TIEGCM, BATSRUS-GTIM, and AMIE-TIEGCM) have been gradually matured to the point to revisit the extensive ground/space observations and to investigate the complex coupling processes of the MIT system. It is thus the proper time to build on and expand these recent efforts. For the next five years, this new focus group (FG) will address, via modeling and observational approaches, 1) where, when, and how magnetospheric energy contributes to the IT system and 2) how the IT system feeds back to the magnetosphere.

Goals and Deliverables

The ultimate goal of this focus group is to advance our physics-based understanding of global magnetosphere – ionosphere – thermosphere coupling dynamics. We are particularly interested in the following topics:

  1. Momentum/Energy input from the magnetosphere to the upper atmosphere: The small and large-scale patterns of field-aligned currents, auroral precipitation, and Poynting flux during various geomagnetic events will be carefully examined using observations, theoretical calculations, and numerical simulations.
  2. Responses of three-dimensional IT system to the magnetospheric input: This FG will investigate the impact of magnetospheric momentum/energy inputs on the three- dimensional IT system using global MIT models and/or global IT models coupled with AMIE. We will address how the spatiotemporal dynamics of magnetospheric input modifies the altitudinal profiles of electron density, ionospheric conductivity, and Joule heating. We will also study how this modification influences global ionospheric electrodynamics.
  3. IT feedbacks to the magnetosphere: Variations in global ionospheric electrodynamics can influence the magnetospheric convection patterns and modify the magnetic reconnection rates. The coupled magnetosphere – ionosphere – thermosphere models can be a good tool to investigate the IT dynamics and their impact on the magnetospheric phenomena. Additionally, strong Joule heating and enhanced ionospheric temperature can produce ion outflows and modulate the reconnection rates. The outcome from this FG can be a good asset for the ion outflow modelers.

The main deliverables of this focus group will include the development, refinement, and application of more comprehensive and self-consistent, physics-based models that cover from the magnetosphere to the upper atmosphere, those of which fulfill the main objective of the GEM program.

2019 GEM Workshop - updated on Jun 12, 2019

  • Location: La Fonda Hotel in Santa Fe, NM.
  • Time:
  1. Session 1 (stand-alone) : 10:30 - 12:00 pm on Monday (06/24)
  2. Session 2 (stand-alone): 1:30 - 3:00pm on Monday (06/24)
  3. Session 3 (joint with MMV): 3:30 - 5:00pm on Tuesday (06/25)
  4. Session 4 (joint with UMEA): 3:30 - 5:00pm on Wednesday (06/26)

Dear speakers,

Here is the tentative schedule for the IEMIT sessions. This schedule may change, so please check the schedule again near the GEM workshop dates.

Thank you very much for your participation.

*** 1. IEMIT stand-alone session: 10:30 - 12:00 pm in Lumpkins Ballroom ***

Please prepare 10min talk + 5min discussion.

  1. Olga Verkhoglyadova: Summary of CEDAR MIT coupling efforts
  2. 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.
  3. Doga Ozturk: What is the role of meso-scale electric fields in M-I-T Coupling?
  4. Kevin Pham: CMIT model
  5. Dong Wei: The magnetospheric driving source of double-peak subauroral ion drifts (DSAIDs): Double ring current pressure peak
  6. Qianli Ma: diffusion coefficients due to chorus waves and electron precipitation features

*** 2. IEMIT stand-alone session: 1:30 - 3:00 pm in Lumpkins Ballroom North ***

Please prepare 10min talk + 5min discussion.

  1. Christine Garbrielse: Storm Time Mesoscale Plasma Flows in the Nightside High‐Latitude Ionosphere
  2. Jiang Liu: SWARM & DMSP observations of the eastward plasma flows in the dawnside ionosphere and their comparison with THEMIS ASI observations.
  3. Ying Zou: effects of substorms in high-latitude upper thermospheric winds
  4. Sebastijan Mrak : storm-time TEC
  5. Brian Anderson: Observed GIC Events in the Pacific Northwest and Corresponding Ionospheric Electrodynamics: Beyond Substorms as the Dominant Cause of GICs
  6. Denny Oliveira: A historical finding of a sporadic aurora sighting in Rio de Janeiro, Brazil, on 15 Feb 1875

*** 3. IEMIT-MMV joint session for ionospheric conductance challenge: 3:30 - 5:00 pm in Lumpkins Ballroom South ***

The ionospheric conductance challenge session focuses on a few challenge storms: 1. 2013 Mar 17, 2. 2016 Oct 13-15, 3. 2015 Jul 21-24, and 4. 2012 March 9.

At this GEM meeting, we will discuss about the 2013-Mar-17 storm. We recommend speakers to prepare the following parameters for easy comparison between observations and models.

Line plots at Poker Flat Location [geographic lat. & long. : 65.13°N, 147.47°W, geomagnetic lat. & long. in 2013 : 65.72°N and 96.51°W]

  1. Aurora energy flux & mean aurora energy vs time
  2. Height-integrated conductance (Pederson & Hall) vs time
  3. Field-aligned current (FAC) vs time

Line plots over the northern and southern hemispheres,

  1. Total hemispheric aurora power vs time
  2. Total hemispheric Joule heating vs time
  3. Total hemispheric FAC vs time
  4. Cross Polar Cap potential vs time

2D maps over the northern and southern hemispheres,

  1. Aurora energy flux & mean energy
  2. Pederson & Hall ionospheric conductance
  3. ionospheric electric potentials
  4. Field-aligned currents
  5. Joule heating

Here is the speaker list. Please prepare 5min talk + 5min discussion. We will have 20min discussion at the end.

  1. Overview from the CEDAR conductance challenge
  2. Toshi Nishimura: Ionospheric conductance observations of the 17 March 2013 event
  3. Gang Lu: AMIE results on the 17 Mar 2013 storm
  4. Bob Robinson: results from a new empirical ionospheric electrodynamics model
  5. Hyunju Connor: OpenGGCM results
  6. Kevin Pham: CMIT-IPWM results
  7. Doga Ozturk: GTIM empirical results.

*** 4. IEMIT-UMEA joint session for waves & their impact on IT: 3:30 - 5:00 pm in Lumpkins Ballroom South ***

15mins for invited talk and 10mins (5min talk + 5min discussion) for other talks will be given.

  1. (Invited) Boyi Wang: ULF wave challenge event
  2. (Invited) Xiaojia Zhang / Anton Artemyev: ULF modulation of VLF waves and precipitation
  3. Doga Ozturk: Update from GEM/CEDAR joint session, PFISR E/ground magnetometer comparisons
  4. Anatoly Streltsov: Effects of Hall conductivity on generation of ULF waves in magnetosphere-ionosphere interactions
  5. Mergen Aligabetov: ULF waves observed in space and on the ground at high and low latitudes
  6. Mark Engebretson: Multi-Instrument Observations of Nighttime Impulsive Magnetic Events
  7. 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
  8. Jesse Woodroffe: ULF waves and GIC

2018 mini-GEM Workshop - updated on Oct 5, 2018

  • Location: Hilton Old Town Alexandria in Alexandria, Virginia.
  • Time: 12:00-17:00 on Dec 10, Sunday before the AGU meeting.

Dear GEM and CEDAR scientists,

The first two sessions are stand-alone sessions and focus on MIT coupling. The last session is a joint session with Modeling Methods & Validation (MMV) focus group, focusing on ionospheric conductance challenge.

Here are the tentative schedule for the upcoming mini-GEM. Please check this page again for the final schedule.

*** Session 1 - 12:00-13:30 in Jefferson Room ***

Please prepare 10min talk + 5min discussion.

  1. Kevin Pham - Overview of the LFM-IPWM-TIEGCM (LIT) model
  2. Dogacan Ozturk - the effects of small-scale electric fields on the MIT coupling
  3. Qingyu Zhu - Boundary-oriented convection and particle precipitation patterns for IMF Bz southward dominant conditions and their impacts on Joule heating: Preliminary results
  4. Andrew Kiene - Observations of ion-neutral coupling and Joule heating driven by energy input from the magnetosphere
  5. Denny Oliveira - Neutral Mass Density Response to Extreme Geomagnetic Storms: Current and Future Perspectives
  6. Jonathan Krall - the effect of oxygen on the limiting H+ flux in the topside ionosphere

*** Session 2 - 13:50-15:20 in Jefferson Room ***

Please prepare 10min talk + 5min discussion.

  1. Xiaojia Zhang - Diffuse aurora precipitation pattern deduced from the Electron-Cyclotron-Harmonics waves in the inner magnetosphere
  2. Qianli Ma - Plasma sheet electron scattering and diffuse aurora precipitation by whistler mode chorus waves
  3. Lindsay Goodwin - Cluster-ground conjunctions associated with polar cap density structures
  4. Alex Chartier - The cause of the puzzling annual variability of polar cap patches
  5. Jiaen Ren - Statistical Characteristics of Polar Cap Patches Observed by RISR‐C
  6. **Canceled** Steve Kaeppler - E-region neutral winds derived from ISR data.

*** Session 3 - 15:30 - 17:00 in Salon A&B room ***

At the beginning of the session, Rob Redmon will start with a couple slides of discussion of the solar wind for the Oct 2016 event. After his talk, each speaker will have about 10 minutes to present. The current speaker order is below (but subject to re-ordering).

  1. Rob Redmon
  2. Steve Kaeppler
  3. Bob Robinson
  4. Gang Lu - presented by Hyunju Connor
  5. Margaret Chen
  6. Agnit Mukhopadhyay - presented by Mike Liemohn
  7. Dan Weimer
  8. Cheng Sheng - Ionospheric Conductance from COSMIC observations and RCM-GITM coupling

2018 GEM Workshop - updated on Jun 18, 2018

Dear GEM and CEDAR scientists,

Here are the schedules for IEMIT-IHMIC and IEMIT sessions. We encourage both GEM and CEDAR scientists to join our discussion. We also allow walk-in presentations. If you are interested in giving a talk, please let us know by Friday morning. Here are emails of conveners: Hyunju Connor at hkconnor@alaska.edu and Hyomin Kim at hmkim@njit.edu.

Friday, June 22, 13:30-15:00 (IEMIT-IHMIC Joint FG Session)

*** Location: Eldorado B ***

10min is given per talk. We recommend to prepare 7min talk + 3min discussion. You can check the same schedule in the following website. [IHMIC].

  1. Bob Clauer: Inter-hemispheric Comparisons along the 40-degree magnetic meridian
  2. Denny Oliveira: GIC induced by interplanetary planetary shocks
  3. Michelle Salzano: A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations
  4. Hyunju Connor -Solar wind dynamic pressure impact on high-latitude neutral density enhancement: OpenGGCM-CTIM results
  5. Doga Ozturk - Modeling of coupled MIT system response to solar wind dynamic pressure enhancement
  6. Kevin Pham - CMIT-IPWM one way coupling - Thermosphere impact on the magnetosphere
  7. Open discussions and walk-in presentations

Friday, June 22, 15:30-17:00 (IEMIT Session)

*** Location: Eldorado B ***

Dear speakers,

There has been schedule changes. Please check below. 10min is given per talk, but please expect some delays in the schedule. I recommend speakers to prepare up to 5 slides, 5min talk, and 5min discussion. Please send your final slides to hkconnor@alaska.edu by Friday noon.

  1. 3:30pm: Hyunju Connor - Introduction of the IEMIT session.
  2. 3:35pm: Marc Lessard - Neutral upwelling event observed from the RENU2 sounding rocket
  3. 3:45pm: Brent Sadler - Simulation Study of Small-scale Plasma / Neutral Dynamics during Poleward Moving Auroral Forms
  4. 3:55pm: Kristina Lynch - Isinglass auroral rocket study and ARCS (Auroral Reconstruction CubeSwarm) mission
  5. 4:05pm: Christine Gabrielse: Statistical study of mesoscale plasma flows in the ionosphere
  6. 4:15pm: Olga Verkhoglyadova - dynamic and localized energy transport in the high-latitude IT
  7. 4:25pm: Russell Cosgrove : Failure of the Electrostatic Assumption and Affects on E-Region Coupling
  8. 4:35pm: Larry Lyons : Identification of auroral zone activity driving large-scale traveling ionospheric disturbances
  9. 4:45pm: open discussion and walk-in presentations


Hyunju Connor, Binzheng Zhang, Gang Lu, and Haje Korth.

2017 Mini-GEM Workshop - Updated on Dec 6

  • Location: Magnolia Room, Hilton Garden Inn - New Orleans Convention Center, 1001 S Peters St, New Orleans, LA70130
  • Time: 15:30 - 17:00pm on Dec 10

Dear speakers,

Here is a tentative schedule for our mini-GEM session. Please visit this website again for the final schedule. If you need to change the schedule, please send an email to hkconnor@alaska.edu.

We now have a total of 11 speakers. We still keep 10min per talk except the last two talks. For speakers who get 10 mins, please prepare 7min talk and 3min question time. To save time, please send your presentation files to hkconnor@alaska.edu by 3pm on Dec 10. This session will follow a typical GEM style format, i.e., audiences can ask questions during the presentations. We are looking forward to your talks. Thank you.

  1. Evan Thomas: New statistical patterns of ionospheric convection derived from SuperDARN observations
  2. Jennifer Carter: Two mechanisms for dayside polar cap auroral emissions under northward IMF
  3. Alex Chartier: Puzzling Global (N+S) December Maximum of Polar Cap Patches Observed using Swarm
  4. Qingyu Zhu: Impacts of small scale electric field/particle precipitation on Joule heating: GITM simulations
  5. Olga Verkhoglyadova: Semi-analytical estimation of energy deposition by Alfven waves into the ionosphere during storms
  6. Robert Rankin: Suppression of the ionospheric feedback instability
  7. Ryan McGranaghan: Characteristics of multi-scale field aligned currents and implications for the magnetosphere-ionosphere-thermosphere system
  8. Doga Ozturk: Response of the coupled M-I-T system to the March 17, 2015 solar wind dynamic pressure enhancement event, insights from numerical studies
  9. Ivan Pakhotin: The role of Alfven waves in M-I coupling: Swarm observations of large-amplitude magnetic perturbations during northward IMF
  10. Dong Lin (5min talk): The Role of Solar Wind Density in the Cross Polar Cap Potential Saturation under Northward Interplanetary Magnetic Field
  11. Naomi Maruyama (5min talk): Ionosphere-Plasmasphere-Magnetosphere coupling during the St. Patrick's Day Storms on 2013 and 2015

Session Proposal

Download the session proposal here.

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