CEDAR email: AGU Fall Meeting Session SM025: Ring Current Dynamics and Its Coupling with Other Particle Populations

[Yue Chao]

Dear Colleagues,



We invite you to submit contributions to the ring current session at the
2022 AGU Fall Meeting (Chicago, IL and online, December 12-16).  Abstracts
submission link is here:
https://agu.confex.com/agu/fm22/prelim.cgi/Session/156827. The submission
deadline is *August 3rd.  *



*SM025: Ring Current Dynamics and Its Coupling with Other Particle
Populations*



The terrestrial ring current is comprised of ions and electrons from 1 keV
to several hundred keV and plays an important role in regulating the energy
density and field configuration of the magnetosphere. Abrupt changes in
this population are responsible for global decreases in the Earth's surface
magnetic field, known as geomagnetic storms. The storm-time ring current is
thus linked to harmful space weather effects, which have motivated the
study of its formation, dynamics, decay, and coupling with other particle
populations. The instability of ring current plasma provides free energy
for various waves (e.g., EMIC, magnetosonic, and whistler-mode waves),
which can heat or pitch-angle-scatter various other plasma populations
through wave-particle interactions and result in plasma energization or
loss via precipitation. The subsequent precipitation modifies the
ionospheric conductance, which in turn changes the magnetospheric electric
potential pattern. Understanding the coupling processes between the ring
current and other particle populations is crucial to modeling the inner
magnetosphere. We invite presentations on research progress of the ring
current dynamics, wave-particle interactions, and the coupling between ring
current system and particle populations in other regimes (e.g.,
plasmasphere, radiation belts, ionosphere and neutral atmosphere).
Contributions including theoretical studies, numerical modeling,
observations from satellite and ground-based missions are welcome.



Conveners: Chao Yue, Cristian Ferradas, Jacob Bortnik, Qianli Ma

-- 
Chao YUE, Ph.D
Department of Atmospheric and Oceanic Sciences
University of California, Los Angeles
405 Hilgard Ave. Los Angles, CA
University Corporation for Atmospheric Research
e-mail: yuechao at atmos.ucla.edu
*http://people.atmos.ucla.edu/yuechao/
<http://people.atmos.ucla.edu/yuechao/>*
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