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Perspectives on the delayed ionospheric response to solar 27-day signatures: A summary of recent studies

Schmölter, Erik und Dühnen, Hanna und Vaishnav, Rajesh und von Savigny, Christian und Heymann, Frank und Berdermann, Jens (2023) Perspectives on the delayed ionospheric response to solar 27-day signatures: A summary of recent studies. 28th IUGG General Assembly, 2023-07-11 - 2023-07-20, Berlin, Deutschland.

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Kurzfassung

Solar extreme ultraviolet radiation is continuously absorbed in the dayside upper atmosphere and controls the creation of ionospheric plasma and its variability via complex interactions. Through these coupled processes, solar signatures such as the 27-day solar rotation period are introduced to the ionospheric state and are observed via various measurements. For example, time-delayed 27-day signatures with varying amplitudes are found for the main ion species and electrons, whose distributions in turn also vary in longitude, latitude, and altitude. Other changes are driven by space weather events such as geomagnetic storms or solar flares. Therefore, a full understanding of the chemical and physical processes is required to correctly describe the delayed ionospheric response. In a series of studies, we investigated and characterized these variations with different satellite- and ground-based measurements (e.g. recent studies with various NASA GOLD data products). Simulations with physics-based models were applied to reproduce the observed variations and to identify the driving processes. While the occurrence of the 27-day signatures is mainly controlled by photoionization and recombination, the delay in particular is significantly driven by photodissociation and transport across different ionospheric layers. In this presentation, we provide an overview of the main results of our studies and preview future work. We also highlight those results that are of interest for the improvement of ionospheric modelling.

elib-URL des Eintrags:https://elib.dlr.de/196044/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Perspectives on the delayed ionospheric response to solar 27-day signatures: A summary of recent studies
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iD
Schmölter, Erik*Erik.Schmoelter (at) dlr.dehttps://orcid.org/0000-0002-9284-6489
Dühnen, HannaHanna.Duehnen (at) dlr.dehttps://orcid.org/0000-0001-9340-8504
Vaishnav, RajeshLeipzig Institute for Meteorology, Universität Leipzighttps://orcid.org/0000-0002-3181-0781
von Savigny, ChristianUniversity of Greifswald
Heymann, FrankFrank.Heymann (at) dlr.dehttps://orcid.org/0000-0002-3245-4272
Berdermann, JensJens.Berdermann (at) dlr.dehttps://orcid.org/0000-0002-3308-4584
*DLR corresponding author
Datum:13 Juli 2023
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Ionosphere, Solar Proxies, Time Delay
Veranstaltungstitel:28th IUGG General Assembly
Veranstaltungsort:Berlin, Deutschland
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:11 Juli 2023
Veranstaltungsende:20 Juli 2023
Veranstalter :International Union of Geodesy and Geophysics
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Weltraumwettereinfluss
Standort: Neustrelitz
Institute & Einrichtungen:Institut für Solar-Terrestrische Physik > Weltraumwettereinfluß
Hinterlegt von: Schmölter, Erik
Hinterlegt am:22 Aug 2023 09:41
Letzte Änderung:24 Apr 2024 20:56

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