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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;background:white">Dear Colleagues,<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;background:white">If you have not submitted your AGU abstracts yet, we cordially invite you to submit your
contribution to SA019 session.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;background:white">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;background:white">Yongliang Zhang<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;background:white">Larry J. Paxton<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;background:white">Yue Deng<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;background:white">Rebecca Bishop<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;background:white"><br>
<b>SA019<o:p></o:p></b></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;background:white">Space Weather Challenges in Ionosphere/Thermosphere/Mesosphere Science
<br>
</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;background:white"><br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif">The next Heliophysics Decadal Survey begins in 2022: what are the needs for ITM space weather community? We solicit talks that address the challenges facing the modeling as well as the ground-
and space-based measurement communities in understanding the variability of the ITM system and forecasting/nowcasting the state of the system. The ITM shows significant variability during both disturbed and ‘quiet’ times. We invite your analyses of the sources
of variability and the variability itself (storms, waves, tides, TIDs, bubbles, scintillation, etc.), differences between models (e.g., first principles, empirical) and observations, and challenges such as representing gravity wave propagation, ion-neutral
coupling, cross-scale coupling, high-latitude conductivity, etc. Specific questions to address include: what are the limiting factors to our ability to forecast the I/T region and what are the current models’ capabilities and limitations especially in terms
of terrestrial sources (e.g., earthquakes, cyclones, volcanic eruptions, etc.)?<b><span style="color:black;background:white"><o:p></o:p></span></b></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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