Monday, June 27, 10:30 - 12:00
From: Dennis Gallagher <dennis.l.gallagher@nasa.gov>
Brian Fraser <Brian.Fraser@newcastle.edu.au>
This IM/S plasmasphere modeling challenge session will be held on Monday,June 27, from 10:30AM to 12:00PM. This session is focused on plasmaspheric modeling results for the IM/S storms. The plasmaspheric modeling results sought of course include modeling where the plasmasphere is coupled to the ionosphere, ring current or radiation belts. Information about the storms and the IM/S assessment challenge can be found at http://csem.engin.umich.edu/GEM_IMS/. Measurements in support of model-data comparisons for the challenge storms can be found at ftp://ftp.nsstc.org/GEM.
Anyone interested in presenting at this session is encouraged to contact the conveners above.
We solicit informal workshop-style presentations, which show observational evidence for or against the concept of local acceleration,together with theoretical and modeling studies of electron acceleration events. Prospective participants are requested to send a title of their presentation to one of the co-chairs: Richard M. Thorne (rmt@atmos.ucla.edu) or Danny Summers (dsummers@math.mun.ca).
Monday, June 27, 1:30 - 3:00
From: Mike Liemohn <liemohn@umich.edu>
Vania Jordanova <vania.jordanova@unh.edu>
The Inner Magnetosphere/Storms (IM/S) Campaign will have a session dedicated to ring current results for the IM/S Assessment Challenge (IMSAC) at the Joint CEDAR-GEM Workshop this summer (June 27-July 1). This session is scheduled in the Monday PM time slot.
The selected events for the ring current component of the IMSAC are April 21, 2001 and October 21-23, 2001. There is a website for the IMSAC with more information about the challenge:
http://csem.engin.umich.edu/GEM_IMS/
There is also an ftp site for IMSAC, where one can find the relevant data for the plasmasphere, ring current, and radiation belt components of the challenge:
Data analysts and modelers that are interested in presenting
IMSAC results in this session are encouraged to contact either/both of the
session
conveners listed above.
Poster requests should be submitted through the main GEM 2005 Workshop website (by June 10).
"IMS Assessment Challenge: Ring Current" - Speakers and Preliminary Titles:
Monday, June 27, 1:30 - 3:00
From: Scot Elkington <Scot.Elkington@lasp.colorado.edu>
This is a call for participation in the 2005 GEM Inner Magnetosphere/Storms Campaign WG-2 and WG-3 session, "Electron
Variability Caused by Radial Diffusion," to be held on Monday afternoon,June
27. This session encourages a broad range of contributions related to the
quantification of the effect of radial diffusion in the outer radiation belts.
The focus of this session will include methods and results in radial diffusion
modeling, calculation and characteristics of radial diffusion coefficients,
comparison of electron variability with ULF wave measurements, and observations
of boundary and source populations contributing to radial diffusion in the
radiation belts. Other topics of interest include measurements or statistics
of ULF waves in space and on the ground, MHD modeling of ULF phenomena, and
validity of the quasilinear diffusion approximation.
Speakers wishing to present material in this session should contact the co-conveners, Yuri Shprits (yshprits@atmos.ucla.edu) or Scot Elkington(scot.elkington@lasp.colorado.edu).
Monday, June 27, 1:30 - 3:00
Reiner Friedel <friedel@lanl.gov>
Joe Fennell <Joseph.F.Fennell@aero.org>
Sasha Ukhorskiy <aleksandr.ukhorskiy@jhuapl.edu>
This joint WG2 & WG3 Inner Magnetosphere / Storms campaign session will be held on Monday, 27 June from 4:00pm to 6:00pm.
Contributions are sought that address the Radiation Belt Challenge as defined below. While the challenge specified two GEM storms for study, this session is open to anyone or any event that addresses an assessment of radiation belt model performance using in situ data. In particular contributions on advanced magnetic field modeling for these events are sought.
Anyone interested in presenting at this session is encouraged to contact one of the conveners listed above. This session is open to CEDAR and GEM participants interested in the modeling of the coupled ring current/ radiation belt system, particularly during storm conditions.
Details of the IM/S Assessment Challenge can be found at:
http://csem.engin.umich.edu/GEM_IMS/
Assessment Challenge Defined (from previous GEM messenger announcement):
The challenge consists of five interlinked parts, applied to two storm periods:
1.) Provide the highest possible fidelity in-situ data for relativistic electrons in the inner magnetosphere. The correct "map" for these measurements is produced in point 2.).
2.) Provide the best possible dynamic magnetic field model:
a) Using the PSD matching technique developed at LANL
b) Using the T89 modifications developed at FMI or elsewhere
c) MHD code models
d) Other
3.) Perform model runs for the selected storms. These runs may produce
their own global magnetic field or use the provided dynamic fields.
Anticipated models that will be used:
a) UNH-RAM code, Vania Jordanova
b) Mei Ching Fok's ring current model
c) Margaret Chen's model
d) Salammbo pure
e) Salammbo data assimilation mode
4.) Comparison of particle data between model and data, using the
magnetic field coordinate mappings using the best dynamic fields of 2.).
5.) Comparison of model-produced magnetic fields with fields of point 2.) .
Two storm periods have been selected for this challenge:
October 21-23, 2001
September 4-9, 2002
The October 21-23, 2001 has been chosen since it is already being used for the ring current challenge. The September 4-9, 2002 storm has been chosen for the existence of geosynchronous pitch angle data and because it is not an extreme event.
A web site has been established for the interchange of data related to this challenge:
http://csem.engin.umich.edu/GEM_IMS/IMSAC_RBdetails.html
From: Margaret Chen <mchen@aero.org>
This session will focus on recent developments in understanding the ring current. Topics to be discussed include physical processes regarding ionospheric and plasma sheet sources, electrodynamics (e. g., feedback of the ring current induced field to magnetospheric fields), particle transport, particle loss, and wave-particle interactions. If you are interested in presenting a short and informal talk in this session, please provide a title to either of the co-chairs: Margaret Chen (mchen@aero.org) or Paul O'Brien (Paul.Obrien@notes.aero.org).
"Recent Advances in Ring Current Understanding " - Speakers and Titles:
Conveners:
Stanislav Sazykin (sazykin@rice.edu), Rice University
Phil Erickson (pje@haystack.mit.edu), MIT Haystack Observatory
2005 June 28, 10:00 AM-12:00 PM, La Fonda Ballroom
Electric fields at subauroral latitudes play an important role in determining global ionospheric plasma density distribution, modify hot ion (ring current) particle behavior, and influence structures in optical emissions of the diffuse aurora and subauroral airglow. The morphology of the electric fields is determined by a complicated combination of the electrodynamic and particle precipitation processes, and the subauroral ionosphere-inner magnetosphere is a strongly coupled system. As a result, during geomagnetic disturbances the usual convection electric field can be amplified in the evening/nighttime subauroral ionosphere leading to strong, poleward, highly dynamic, and possibly structured electric fields confined to narrow regions just equatorward of the diffuse aurora that are termed SubAuroral Polarization Stream (SAPS) events. The term SAPS includes (but is not limited to) SubAuroral Ion Drift (SAID) and Polarization Jet events.
A workshop will be held on Tuesday, June 28, at the joint CEDAR/GEM 2005 meeting, to address outstanding science questions related to the electrodynamic M-I coupling at subauroral latitudes. Some of the unanswered questions or topics are:
We solicit short and focused contributions, not to exceed 3-4 viewgraphs, that use observations, theory, and modeling to address one or more of the questions above, or any other related topic. There will be time for open discussion. If you would like to contribute, please e-mail your name to the organizers: Stan Sazykin (sazykin@rice.edu) and Phil Erickson (pje@haystack.mit.edu).
From: Jacob Bortnik <jbortnik@gmail.com>
Tuesday, June 28th 2005, 10:00 AM - 12:00 PM
WG focus: WG2 & WG3
This session focuses on the loss of energetic radiation-belt electrons
during geomagnetically disturbed conditions. We welcome contributions
from both experimental and theoretical studies that quantify and assess
the roles played by various loss mechanisms including drift resonance with
ULF waves, cyclotron resonance with ELF/VLF waves, loss to the magnetopause,
loss of adiabaticity due to field-line stretching, and so on. Presentations
are informal, workshop-style.
Abstracts should be sent to Terry Onsager (terry.onsager@noaa.gov) and/orJacob Bortnik (jbortnik@gmail.com)
Tuesday, June 28th 2005, 01:30 MM - 03:30 PM
Dennis Gallagher <dennis.l.gallagher@nasa.gov>
Robert Shunk <schunk@cc.usu.edu>
Fred Menk <fred.menk@physics.org>
This joint CEDAR/GEM session on ionosphere/plasmasphere coupling will be held on Tuesday, June 28, from 1:30PM to 3:30PM. Storm-time plasma redistribution, heating, and other mass coupling topics are sought.
Anyone interested in presenting at this session is encouraged to contact one of the conveners listed above. This session is open to CEDAR and GEM participants interested in these strong interactions taking place between the ionosphere and plasmasphere, particularly during storm conditions.
IM/S WG2 & WG1 Breakout Session: "Radial Profiles of Electron PSD during Different Phases of a Storm"
Tuesday, June 28th 2005, 01:30 MM - 03:30 PM
Janet Green <Janet.Green@lasp.colorado.edu>
This is a call for participants in the GEM 2005 IMS Breakout Session: WG2 & WG1 - Radial profiles of electron PSD during different phases of a storm. This session will discuss methods for obtaining electron phase space density from satellite flux measurements and what the phase space density gradients reveal about acceleration and loss processes in the radiation belts during storms. If you would like to give a presentation in this session please contact Janet Green at Janet.Green@lasp.colorado.edu or Geoff Reeves at reeves@lanl.gov
IM/S: Breakout: WG1 & WG3 - Recent Advances in Plasmaspheric Understanding Tues, 28 Jun 2005, 4-6pm
Tuesday, June 28th 2005, 04:00 MM - 06:00 PM
Maria Spasojevic <maria@nova.stanford.edu>
We solicit presentations for the Tuesday afternoon IM/S session on Recent Advances in Plasmaspheric Understanding.
We plan to discuss new advances in plasmaspheric modeling as well as new observational findings
that have yet to be fully captured in simulation. Topics to be discussed include subcorotation,
shielding, formation of global/ meso-scale azimuthal features (plumes, shoulders, notches),
refilling, heavy ion composition, etc.
If you are interested in contributing to this session, please send a title to the co-chairs:
Maria Spasojevic (maria@nova.stanford.edu)
Mark Moldwin (mmoldwin@igpp.ucla.edu).
From: Reiner Friedel <friedel@lanl.gov>
Paul O'Brien <Paul.OBrien@aero.org>
This joint WG2 Inner Magnetosphere / Storms campaign session will be held
on Tuesday, 28 June from 4:00pm to 6:00pm.
This
session will focus on issues associated with building statistical and empirical
models of radiation belt particle fluxes. During the
session, we
will survey existing data and recent developments in data calibration and
statistical methods. If you are interested in presenting a short and informal
talk in this session, please provide a title to either of the co-chairs.
This session will also solicit input to the COSPAR Panel on Radiation Belt Environment Modeling (PRBEM,
http://wwwe.onecert.fr/craterre/prbem/Working_group.html#progress).
The working group consists of the following members:
B. Blake, Aerospace Corp., USA
C. Underwood, Univ. of Surrey, UK
S. Bourdarie, ONERA, France (Chairman)
R. Friedel, LANL, USA
M. Panasyuk, MSL, Russia
J. Cao, CSSAR, China
Y. Mijushi, Stelab, Japan
Upcoming actions of the working group are:
1. Agree on a set of user needs definition (radiation belt model specification)
2. Data processing and analysis guidelines.
Wednesday, June 29th 2005, 01:30 MM - 03:00 PM
Aaron Ridley <ridley@umich.edu>
A key objective of GEM is the development of a Geosciences General Circulation Model, which is capable of modeling the interaction between solar disturbances and the Earth's magnetospheric environment. Global MHD codes have already been developed to simulate changes in the global structure of the magnetosphere and such codes have recently been coupled to codes that more properly treat ring current development. What is still needed are modules for the inner magnetosphere that are capable of treating energetic particle dynamics and can be coupled with existing large-scale codes. We solicit presentations on how this might best be accomplished. Prospective presenters are requested to send a title of their presentation to one of the co-chairs: Aaron Ridley (ridley@umich.edu), Mary Hudson (mary.hudson@dartmouth.edu), Richard M. Thorne (rmt@atmos.ucla.edu), or Richard Denton (richard.denton@dartmouth.edu).