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<div class="moz-forward-container">Dear Colleagues,<br>
<p> <br>
We warmly invite you to submit an abstract to our upcoming
session <b>Observations and modelling of the effects of solar
wind pressure pulses on the terrestrial magnetosphere (ST2.6)</b>
at the EGU General Assembly 2022. This will be a Virtual PICO
session (fully online) during the week 3rd-8th April 2022.<br>
<br>
We look forward to receiving your abstract by the submission
deadline of 12th January 2022 at 12 UTC.<br>
<br>
Please find the details about our session below:<br>
<br>
<u>Observations and modelling of the effects of solar wind
pressure pulses on the terrestrial magnetosphere (ST2.6)</u><br>
<br>
Positive solar wind pressure pulses are pockets of solar wind
plasma that are faster and/or denser than the surrounding
ambient plasma. When a pressure pulse impacts the terrestrial
magnetosphere, it is rapidly compressed, and the effects
propagate inwards resulting in a well observed enhancement in
the magnetic field, as evidenced in the SYM-H index; this
communication of a pressure pulse into the magnetosphere is
known as a geomagnetic sudden commencement (SC). SCs can be
further subdivided into sudden impulses (SIs) and sudden storm
commencements (SSCs), where in the latter case, the pressure
pulse triggers a geomagnetic storm. Even for small, short lived,
pressure enhancements, the effects on the terrestrial
magnetosphere can be dramatic, exciting and even reconfiguring
the electrodynamics within. Among these effects, observations
and modelling have shown: enhancements and restructuring of high
latitude ionospheric currents and convection; auroral emission
excited by particle precipitation; energisation of the
plasmasphere; excitation of magnetospheric current systems;
enhanced ULF wave activity.<br>
In this session, we invite contributions based on both
observations and modelling of the effect of solar wind pressure
pulses on the coupled solar wind – magnetosphere – ionosphere
system. We seek to facilitate crossover discussion between the
observational and modelling communities on pressure pulse
driving of phenomena including (but not limited to): ULF wave
propagation; ionospheric convection; ionospheric and
magnetospheric current systems; auroral emission; terrestrial
radio emissions; plasmasphere effects.<br>
<br>
More details: <a class="moz-txt-link-freetext"
href="https://meetingorganizer.copernicus.org/EGU22/session/43639"
moz-do-not-send="true">https://meetingorganizer.copernicus.org/EGU22/session/43639</a><br>
<br>
Thanks,<br>
<br>
Alexandra Fogg, Tom Elsden and Mark Lester<br>
</p>
<pre class="moz-signature" cols="72">--
Dr. Alexandra Ruth Fogg (she/her)
Postdoctoral Researcher
School of Cosmic Physics - Astronomy & Astrophysics
Dublin Institute for Advanced Studies
<a class="moz-txt-link-freetext" href="https://orcid.org/0000-0002-1139-5920" moz-do-not-send="true">https://orcid.org/0000-0002-1139-5920</a></pre>
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