<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div class="elementToProof" style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
Dear CEDAR Community,</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
You are cordially invited to submit abstracts to the 2025 EGU General Assembly session (ST3.3) - Dynamics, Chemistry, and Coupling in the Middle Atmosphere and MLT Regions. This meeting will be held in Vienna, Austria & Online from April 27th to May 2nd, 2025.</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
****<b>Session Details</b>**** </div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
<b>Session Title</b>: ST3/AS3/PS4 - Dynamics, Chemistry, and Coupling in the Middle Atmosphere and MLT Regions</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
<b>Section</b>: Solar-Terrestrial Sciences (ST)</div>
<div style="background-color: rgb(255, 255, 255); margin: 0px;">
<div style="text-align: justify; text-indent: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt;">
<span style="color: black;"><b>Session Link</b>: </span><span style="color: blue;"><i><u><a href="https://meetingorganizer.copernicus.org/EGU25/session/53617" id="OWAf7f71ed9-d48b-a3b5-0910-627f28ff8bc9" class="OWAAutoLink" title="https://meetingorganizer.copernicus.org/EGU25/session/53617" data-auth="NotApplicable" data-linkindex="0" style="color: blue; margin: 0px;">https://meetingorganizer.copernicus.org/EGU25/session/53617</a></u></i></span></div>
<div style="margin: 16px 0px; max-width: 800px; min-width: 424px;"></div>
</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
<b>Primary Convener</b>: Sovit Khadka, <i>Orion Space Solutions, Colorado, USA</i></div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
<b>Conveners</b>: Erin Dawkins, <i>NASA Goddard Space Flight Center, Greenbelt, MD, USA</i></div>
<div style="text-align: left; text-indent: 0px; line-height: normal; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
Linda Megner, <i>Department of Meteorology,</i> <i>Stockholm University, Stockholm, Sweden</i></div>
<div style="text-align: left; text-indent: 0px; line-height: normal; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
Maosheng He, <i>National Space Science Center, Chinese Academy of Sciences, Beijing, China</i></div>
<div style="text-align: left; text-indent: 0px; line-height: normal; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
Juan Antonio Añel, <i>Applied Physics,</i> <i>EPhysLab, Universidade de Vigo, Ourense, Spain</i></div>
<div style="text-align: left; text-indent: 0px; line-height: normal; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
<b>Invited Speakers</b>: Ludger Scherliess, <i>Utah State University, Logan, Utah, USA</i></div>
<div style="text-align: left; text-indent: 0px; line-height: normal; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
Claudia Stolle, <i>Leibniz Institute of Atmospheric Physics,
</i><span style="font-weight: 500;"><i>Kuhlüngsborn, Germany</i></span></div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
<b>Session Description</b>:</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
The Earth's middle atmosphere, mesosphere, and lower thermosphere (MLT) region provide a great platform for studying ionospheric dynamics, disturbances, eddy mixing, atmospheric drag effects, and space debris tracking. The thermal structure of these regions
is influenced by numerous energy sources such as solar radiation, chemical, and dynamical processes, as well as forces from both above (e.g. solar and magnetospheric inputs) and below (e.g. gravity waves and atmospheric tides). Solar atmospheric tides, related
to global-scale variations of temperature, density, pressure, and wind waves, are responsible for coupling the lower and upper layers of the atmosphere and significantly impact their vertical profiles in the upper atmosphere. With evidence of climate change
impacts on the middle and upper atmosphere, monitoring and understanding trends through observational data is critical. There has been a contraction of the stratosphere and a decrease in the density of the upper atmosphere, which could impact the accumulation
of space debris. This session invites presentations on scientific work related to various experimental/observational techniques, numerical and empirical modeling, and theoretical analyses on the dynamics, chemistry, and coupling processes in the altitude range
of ~ 20 km to 180 km of the middle atmosphere and MLT regions, including long-term climatic changes.</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
We look forward to your contribution to our EGU25 session. </div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
Please note that the abstract submission deadline is<b> Wednesday, 15 January 2025, 13:00 CET</b>.</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
Thank you!</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
Sincerely,</div>
<div style="text-align: justify; text-indent: 0px; background-color: rgb(255, 255, 255); margin: 0px; font-family: Cambria, Georgia, serif; font-size: 12pt; color: black;">
Sovit Khadka, Erin Dawkins, Linda Megner, Maosheng He, and Juan Antonio Añel</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
</body>
</html>