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Modeling Of The Delayed Ionospheric Response With The TIE-GCM Model

Schmölter, Erik and Berdermann, Jens and Jacobi, Christoph and Jakowski, Norbert (2021) Modeling Of The Delayed Ionospheric Response With The TIE-GCM Model. IEEE. 2020 European Navigation Conference (ENC), 23.-24. Nov. 2020, Dresden, Germany. doi: 10.23919/ENC48637.2020.9317355.

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Official URL: https://ieeexplore.ieee.org/document/9317355


In this study the Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIE-GCM) is used to describe the delayed ionospheric response to solar Extreme Ultraviolet (EUV) radiation and its varying relation to solar and geomagnetic activity (e.g. stronger impact of the solar wind during winter season in the northern hemisphere). Long-term changes, at time scales longer than the 27-day solar rotation cycle, are analyzed and the dependence of the ionospheric delay on the solar activity is presented based on calculations at a chosen location in the mid-latitudes. Ionospheric delays of 2, 11 and 20 h can be correlated to the mean solar radio flux index (F10.7) values of 95, 115 and 135 sfu. In addition, a possible relation of the delayed ionospheric response with the geomagnetic activity is analyzed with TIE-GCM model runs, that estimate an ionospheric delay of 15 h for a corresponding Kp-index of 0.91 and an ionospheric delay of 17 h for a corresponding Kp-index of 2.88 (during December). These differences are related to changes in electron temperature and ion velocity perpendicular to the geomagnetic field lines. The results suggest a significant impact of transport processes on the delayed ionospheric response.

Item URL in elib:https://elib.dlr.de/140950/
Document Type:Conference or Workshop Item (Speech)
Title:Modeling Of The Delayed Ionospheric Response With The TIE-GCM Model
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schmölter, ErikErik.Schmoelter (at) dlr.dehttps://orcid.org/0000-0002-9284-6489
Berdermann, JensJens.Berdermann (at) dlr.dehttps://orcid.org/0000-0002-3308-4584
Jacobi, ChristophUniversity of Leipzig, Germanyhttps://orcid.org/0000-0002-7878-0110
Jakowski, NorbertNorbert.Jakowski (at) dlr.dehttps://orcid.org/0000-0003-3174-2624
Date:18 January 2021
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.23919/ENC48637.2020.9317355
Keywords:Ionosphere, Thermosphere, Modeling
Event Title:2020 European Navigation Conference (ENC)
Event Location:Dresden, Germany
Event Type:international Conference
Event Dates:23.-24. Nov. 2020
Organizer:Deutsche Gesellschaft für Ortung und Navigation (DGON)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics > Space Weather Impact
Deposited By: Schmölter, Erik
Deposited On:08 Mar 2021 07:50
Last Modified:08 Mar 2021 07:50

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