<div dir="ltr"><p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Times New Roman",serif"><span lang="EN-US" style="font-size:10.5pt;font-family:Arial,sans-serif;color:rgb(38,38,38);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">Dear Colleagues,</span></p>

<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Times New Roman",serif"><span lang="EN-US" style="font-size:10.5pt;font-family:Arial,sans-serif;color:rgb(38,38,38);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"> </span></p>

<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Times New Roman",serif"><span lang="EN-US" style="font-size:10.5pt;font-family:Arial,sans-serif;color:rgb(38,38,38);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">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: <a href="https://agu.confex.com/agu/fm22/prelim.cgi/Session/156827">https://agu.confex.com/agu/fm22/prelim.cgi/Session/156827</a></span><span lang="EN-US" style="font-size:10.5pt;font-family:宋体;color:rgb(38,38,38);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">. </span><span lang="EN-US" style="font-size:10.5pt;font-family:Arial,sans-serif;color:rgb(38,38,38);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">The
submission deadline is <b>August 3rd.  </b></span></p>

<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Times New Roman",serif"><span lang="EN-US" style="font-size:10.5pt;font-family:Arial,sans-serif;color:rgb(38,38,38);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"> </span></p>

<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Times New Roman",serif"><b><span lang="EN-US" style="font-size:10.5pt;font-family:Arial,sans-serif;color:rgb(38,38,38);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">SM025: Ring Current Dynamics
and Its Coupling with Other Particle Populations</span></b></p>

<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Times New Roman",serif"><span lang="EN-US" style="font-size:10.5pt;font-family:Arial,sans-serif;color:rgb(38,38,38);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"> </span></p>

<p class="MsoNormal" style="text-align:justify;margin:0cm;font-size:12pt;font-family:"Times New Roman",serif"><span lang="EN-US" style="font-size:10.5pt;font-family:Arial,sans-serif;color:rgb(38,38,38);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">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.</span></p>

<p class="MsoNormal" style="text-align:justify;margin:0cm;font-size:12pt;font-family:"Times New Roman",serif"><span lang="EN-US" style="font-size:10.5pt;font-family:Arial,sans-serif;color:rgb(38,38,38);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"> </span></p>

<p class="MsoNormal" style="margin:0cm;font-size:12pt;font-family:"Times New Roman",serif"><span lang="EN-US" style="font-size:10.5pt;font-family:Arial,sans-serif;color:rgb(38,38,38);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">Conveners: Chao Yue, Cristian Ferradas, Jacob Bortnik,
Qianli Ma</span></p><div><br></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><font face="arial, helvetica, sans-serif" style="background-color:rgb(255,255,255)"><div><font face="arial, helvetica, sans-serif" style="background-color:rgb(255,255,255)">Chao YUE, Ph.D</font></div>Department of Atmospheric and Oceanic Sciences<br>University of California, Los Angeles </font></div><div dir="ltr"><span style="font-family:arial,helvetica,sans-serif;font-size:12.8px">405 Hilgard Ave. Los Angles, CA</span><font face="arial, helvetica, sans-serif" style="background-color:rgb(255,255,255)"><br></font></div><div dir="ltr"><font face="arial, helvetica, sans-serif">University Corporation for Atmospheric Research </font><div><font face="arial, helvetica, sans-serif" style="background-color:rgb(255,255,255)">e-mail: <a href="mailto:yuechao@atmos.ucla.edu" target="_blank">yuechao@atmos.ucla.edu</a><br><font color="#0000ee"><span style="font-size:12.8px"><u><a href="http://people.atmos.ucla.edu/yuechao/" target="_blank">http://people.atmos.ucla.edu/yuechao/</a></u></span></font><br></font></div></div></div></div></div></div></div></div></div></div></div>