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Modelling the ionospheric response to solar variability with TIE-GCM and CTIPe

Heymann, Frank and Fernandez Gomez, Isabel and Schmölter, Erik and Borries, Claudia (2021) Modelling the ionospheric response to solar variability with TIE-GCM and CTIPe. COSPAR 2020/21, 28 Jan. - 4. Feb. 2021, Sydney - Online.

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Solar EUV radiation is the main driver of ionization processes in the upper atmosphere and its variability on different timescales significantly impacts the variations of the ionospheric plasma. Previous analyses of this response observed a delayed reaction of the ionosphere to solar EUV variability with 1-2 d. The physical and chemical processes causing this ionospheric delay are under investigation (e.g. slow diffusion of oxygen, transport processes or composition changes) and their respective contributions have to be discussed. This study further analyzes the delayed ionospheric response to solar EUV radiation using results of long-term simulations with two physics-based global 3-D models, the Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIE-GCM) and the Coupled Thermosphere-Ionosphere Plasmasphere electrodynamics (CTIPe) model. The setup, similarities and differences of the model calculations are presented and the performance of the models is discussed by comparison to measurement data of the Total Electron Content (TEC) and other ionospheric parameters (e.g. F2 layer peak electron density). Finally, the results are used to characterize the delayed ionospheric response to solar variability.

Item URL in elib:https://elib.dlr.de/141693/
Document Type:Conference or Workshop Item (Speech)
Title:Modelling the ionospheric response to solar variability with TIE-GCM and CTIPe
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Heymann, FrankUNSPECIFIEDhttps://orcid.org/0000-0002-3245-4272UNSPECIFIED
Schmölter, ErikUNSPECIFIEDhttps://orcid.org/0000-0002-9284-6489UNSPECIFIED
Borries, ClaudiaUNSPECIFIEDhttps://orcid.org/0000-0001-9948-3353UNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:EUV delay Ionosphere
Event Title:COSPAR 2020/21
Event Location:Sydney - Online
Event Type:international Conference
Event Dates:28 Jan. - 4. Feb. 2021
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Ionosphäre (old)
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics > Solar-Terrestrial Coupling Processes
Deposited By: Heymann, Dr. Frank
Deposited On:19 Apr 2021 09:57
Last Modified:19 Apr 2021 09:57

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