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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class="">Dear colleagues,</span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class="">We are inviting you to <b class="">submit abstracts to the Royal Astronomical Specialist Discussion Meeting</b> titled "Meeting the Challenges of Limited Observations
for the Global Modelling of the Ionosphere-Thermosphere System”. </span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class=""><b class="">Abstract deadline: Friday 16th February</b> (end of business)</span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class=""><b class="">Meeting Date: 8th March 2024</b>, planned start time: 10.30; latest planned end time: 15.30 (UK time). </span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class=""><b class="">Location: Burlington House</b>, London. <b class="">Hybrid option confirmed.</b></span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class=""><b class="">To submit an abstract please fill in the following form: </b></span></font></div>
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<a href="https://forms.gle/TFtvniB2GvvNyMQS6" class="">https://forms.gle/TFtvniB2GvvNyMQS6</a><br class="">
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class="">As is customary for RAS SDMs, you will have to register for the meeting separately through the RAS. We will send out a reminder when registration has opened. Fellows
can register for free both online and in person, for non Fellows the RAS charges £5 online and £15 for in person attendance. If these charges present a barrier for you but you have relevant work to present, please email us at the earliest convenience (there
may be travel support available for travel within the UK, especially for students).</span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class=""><b class="">About the meeting:</b> Earth’s ionosphere is the boundary between space and the atmosphere. It holds a special importance in models of the Ionosphere-Thermosphere
(IT) System because plasma interactions with the magnetic field of the ionosphere become intertwined with the neutral dynamics of the thermosphere and atmosphere. In the context of global whole atmosphere models in particular, the IT system builds the top
layer and is responsible for holding the information of solar wind-magnetosphere-ionosphere interactions. At high latitudes, the IT dynamics are driven by the solar wind and magnetospheric responses to solar wind driving, whereas at mid to low latitudes, the
electric dynamo interactions and tides dominate. Modelling these interactions and dynamics is challenging, but important to the provision of the boundary conditions for modelling the entire atmosphere. These challenges are compounded by limited observations
of the IT system.</span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class="">The dynamics of the solar wind results in a varying degree of activity in the ionosphere, especially at high- to mid-latitudes. During a geomagnetic storm for
example, the energy input into the mesosphere and thermosphere is much higher than during quiet times, which changes atmospheric composition in those regions. It is important to capture these dynamics to advance models for space and/or terrestrial weather
and climate purposes. This comes with great challenges due to the varying observations available. The thermosphere, for example, is difficult to measure in-situ due to orbital constraints, and ground-based observations can be sparse due to geographical constraints
and lack of vertical resolution. Furthermore, scale-sizes and cadences of observations vary drastically. This makes it difficult to infer physical interactions and build global empirical models, and so challenges model validation efforts.</span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class="">The aim of this discussion meeting is to bring together modellers and observers of the IT system and the atmosphere, as well as researchers interested in advancing
our modelling capabilities, to discuss recent scientific findings, modelling advances and future plans.</span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class=""><b class="">Confirmed invited speakers:</b> Tomoko Matsuo and Juha Vierinen</span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class="">More information on the meeting can be found here: </span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class=""><a href="https://ras.ac.uk/events-and-meetings/ras-meetings/meeting-challenges-limited-observations-global-modelling" class="">https://ras.ac.uk/events-and-meetings/ras-meetings/meeting-challenges-limited-observations-global-modelling</a> </span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class="">Many thanks,</span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class="">Maria - on behalf of the organisers:</span></font></div>
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<font color="#000000" face="Helvetica" class=""><span style="caret-color: rgb(0, 0, 0);" class="">Maria-Theresia Walach (Lancaster University), Mai Mai Lam (British Antarctic Survey), David R. Themens (Birmingham University), Anasuya Aruliah (University College
London) and Andrew Kavanagh (British Antarctic Survey) </span></font></div>
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<b class="">Maria-Theresia Walach (she/her)</b></div>
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STFC Ernest Rutherford Fellow </div>
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Space and Planetary Physics | Lancaster University | Lancaster | LA1 4YB | UK</div>
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<div style="text-align: start; text-indent: 0px;"><a href="https://www.lancaster.ac.uk/physics/about-us/people/maria-theresia-walach" class="">Institutional Website</a><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span class="Apple-converted-space"> </span></span>| <a href="https://mtwalach.github.io" class="">Personal Website</a> |
Twitter: @maria_walach | <a href="https://name.pn/maria-theresia-walach" class="">How to pronounce my name</a></div>
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<div style="text-align: start; text-indent: 0px;"><a href="https://www.britishscienceassociation.org/news/award-lectures-british-science-festival-2022" class="">Award Lecture</a> Winner of the British Science Association 2022</div>
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