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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dear Colleagues<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I would like to invite you to consider submitting an abstract to session
<b>ST3.5 Dynamics of ionospheric currents and their associated ground effects </b>
at the EGU General Assembly 2019, April 7-12, Vienna, Austria.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The abstract submission deadline is the 10 January 2019 (13:00 CET)<o:p></o:p></p>
<p class="MsoNormal">Direct submission: <a href="https://meetingorganizer.copernicus.org/EGU2019/session/31193">
https://meetingorganizer.copernicus.org/EGU2019/session/31193</a><o:p></o:p></p>
<p class="MsoNormal">Details on submission: <a href="https://egu2019.eu/abstracts_and_programme/how_to_submit_an_abstract.html">
https://egu2019.eu/abstracts_and_programme/how_to_submit_an_abstract.html</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><o:p> </o:p></b></p>
<p class="MsoNormal"><b>ST3.5 Dynamics of ionospheric currents and their associated ground effects</b><o:p></o:p></p>
<p class="MsoNormal">Convener: Andrew Dimmock<o:p></o:p></p>
<p class="MsoNormal">Co-conveners: Andrew J. Kavanagh, Mirko Piersanti<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Abstract:<o:p></o:p></p>
<p class="MsoNormal">The Earth’s ionosphere is characterized by large spatial scale electrical current systems which can exhibit extremely dynamical behaviour during periods of high solar activity. It is well established that the enhancement and variability
of these current systems produce high amplitude and rapidly varying geomagnetic disturbances. As a result, currents are created in the conductive ground which set up a geoelectric field causing hazardous Geomagnetically Induced Currents (GIC) in ground conductive
networks. At high-latitudes, where the more intense auroral electrojet currents flow, the ground response can be even greater, potentially increasing the susceptibility of high-latitude regions to space weather effects. Moreover, ionospheric currents can form
complex spatio-temporal structures, such as vortices, that can result in localised ground responses, such as regional peak geoelectric fields. In this context, the regional 3D ground conductivity plays a key role, particularly in areas of high conductivity
gradients, such as in close proximity to coastlines.<br>
<br>
In this session we invite contributions which improve the understanding of the dynamics of ionospheric currents, the relevant magnetospheric coupling processes, and their subsequent ground effects, such as GIC.<br>
<br>
This session provides a forum for the latest results based on spacecraft observations (e.g. MMS, Cluster, THEMIS, SWARM and CSES), ground-based measurements (such as all-sky cameras, radar and magnetometers), data derived products (e.g. ionospheric equivalent
currents), and numerical simulations. Contributions focusing on more than one of these, and/or the coupling between multiple (magnetosphere-ionosphere-ground) regions are strongly encouraged.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Notes on Submission:<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">1)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Only EGU members can submit an abstract as first author (members get a substantial reduction on the registration fee - more than offsets the members fee). Apply here:
<a href="https://www.egu.eu/membership/apply/">https://www.egu.eu/membership/apply/</a><o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">2)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>First authors are allowed only 1 regular abstract + 1 solicited abstract OR 2 solicited abstracts<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">3)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Each abstract incurs a charge of €40.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">----------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Dr. Andrew J. Kavanagh |UK EISCAT Science Support |British Antarctic Survey<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">High Cross, Madingley Road, Cambridge CB3 0ET<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Email: <a href="mailto:andkav@bas.ac.uk">
andkav@bas.ac.uk</a> |Tel: +44 (0)1223 221314<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">NERC is part of UK Research and Innovation
<a href="http://www.ukri.org">www.ukri.org</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Please think of the environment before printing out this message<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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