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Polar cap plasma transport during geomagnetic superstorm

Pokhotelov, Dimitry and Fernandez Gomez, Isabel and Borries, Claudia (2021) Polar cap plasma transport during geomagnetic superstorm. CEDAR 2021, 20.-25. Jun. 2021, Boulder, USA (online).

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Abstract

Positive plasma anomalies appear during the main phase of geomagnetic storms at (sub)auroral latitudes, extending across the polar cap as tongue of ionisation (TOI). Physical mechanisms of TOI, including electrodynamic plasma transport and neutral wind forcing, are simulated with TIE-GCM during the superstorm of Nov. 2003. The simulations are compared with TEC observations and GNSS tomography. The electrodynamic transport (vertical ExB component in particular) is identified as the main mechanism controlling TOI anomaly during great storms (Dst < -300 nT). This makes the choice of high-latitude convection model critical for simulations.

Item URL in elib:https://elib.dlr.de/142963/
Document Type:Conference or Workshop Item (Poster)
Title:Polar cap plasma transport during geomagnetic superstorm
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Pokhotelov, DimitryDimitry.Pokhotelov (at) dlr.deUNSPECIFIED
Fernandez Gomez, IsabelIsabel.FernandezGomez (at) dlr.deUNSPECIFIED
Borries, Claudiaclaudia.borries (at) dlr.dehttps://orcid.org/0000-0001-9948-3353
Date:22 June 2021
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Polar ionosphere, geomagnetic storms, plasma transport.
Event Title:CEDAR 2021
Event Location:Boulder, USA (online)
Event Type:international Conference
Event Dates:20.-25. Jun. 2021
Organizer:NSF, NCAR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Solar-Terrestrial Physics SO, R - Ionosphere
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics > Solar-Terrestrial Coupling Processes
Deposited By: Pokhotelov, Dimitry
Deposited On:09 Jul 2021 13:52
Last Modified:09 Jul 2021 13:52

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