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<div>Dear Colleagues, </div>
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<div>We would like to invite you to participate in the 2014 AGU session: The Dynamic Polar Cap. </div>
<div>The deadline for submitting an abstract is August 6, 2014 (Wednesday).</div>
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<div>Thanks.</div>
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<div><b>Session Title</b>: The Dynamic Polar Cap</div>
<div><b>Session ID#</b>: 2082</div>
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<div><b>Session Description</b>: The polar cap is often overlooked in studies of high-latitude ionosphere-thermosphere (IT) dynamics </div>
<div>in which the auroral zones on closed field lines form the primary focus. However, there is a growing body of evidence which </div>
<div>may revise that paradigm by placing the cusp and polar cap at the center of energy transfer to the IT system. Examples </div>
<div>include direct observations of anomalously high neutral densities, electromagnetic energy input, evidence of<em> in situ </em>Joule </div>
<div>heating in the polar cap, storm-enhanced densities, polar cap patches and ion outflows. This session solicits presentations </div>
<div>on these and other polar cap phenomena with the overall goal of forming a unified framework of high-latitude dynamics in </div>
<div>which the relative roles of the polar cap and auroral zones are assessed. We encourage submission of papers reporting </div>
<div>data analysis, modeling and theory of the polar cap and adjoining auroral zones.</div>
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<div><b>Co-Sponsors:</b></div>
<div>SH - SPA-Solar and Heliospheric Physics</div>
<div>SM - SPA-MAgnetospheric Physics</div>
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<div><b>Primary Convener:</b></div>
<div>Cheryl Y Huang, Air Force Research Laboratory Albuquerque, Albuquerque, NM, United States</div>
<div><b>Co-conveners:</b></div>
<div>Yanshi Huang, University of New Mexico, Albuquerque, NM, United States</div>
<div>Gary S Bust, JHU Applied Physics Lab, Laurel, MD, United States</div>
<div>Jeffrey M Holmes, Air Force Research Laboratory, Kirtland Afb, NM, United States</div>
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