elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Barrierefreiheit | Kontakt | English
Schriftgröße: [-] Text [+]

Has the relationship between ionospheric behavior and geomagnetic activity changed over the past five solar cycles?

Tan Jun Rios, Maria Gloria und Borries, Claudia und Liu, Huixin (2025) Has the relationship between ionospheric behavior and geomagnetic activity changed over the past five solar cycles? IAGA-IASPEI Join Scientific Meeting 2025, 2025-08-31 - 2025-09-05, Lisbon, Portugal.

[img] PDF
2MB

Kurzfassung

Long-term variations in the ionospheric and thermospheric responses to solar EUV radiation have been documented in numerous studies. Model simulations indicate that these long-term changes in the thermosphere may influence the intensity of the ionospheric relationship with geomagnetic activity (GA). This study investigates the relationship between GA and the peak electron density of the ionosphere (NmF2) and examines its consistency across different solar cycles to identify any observable long-term changes. Hourly values of NmF2 from six midlatitude ionospheric stations are analyzed from 1964 to 2019. The residuals from a dedicated background model are analyzed for correlation with several GA indices to detect the ionospheric relationship with GA. Kpm was identified as the most appropriate index, yielding the highest absolute correlation with the residuals of NmF2. The observed patterns align with the well-established storm-time characteristics at midlatitudes, showing a predominant negative response during summer morning hours and a positive response during winter afternoons. During summer conditions, a predominant negative association with GA, which exhibits sufficiently high correlations for statistical analysis. However, no significant long-term changes in the relationship between NmF2 and GA were identified within the Kpm range of 0–5. During winter conditions, the results show the well-known positive relationship with GA during daytime, but the variability is so strong that no significant correlation to GA indices can be found, and detection of long-term changes is not possible. Consequently, the long-term changes in the relationship between the ionosphere and GA reported in model-based studies cannot yet be confirmed by observations.

elib-URL des Eintrags:https://elib.dlr.de/215340/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Has the relationship between ionospheric behavior and geomagnetic activity changed over the past five solar cycles?
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Tan Jun Rios, Maria Gloriamaria.tan (at) dlr.dehttps://orcid.org/0009-0001-7735-0768NICHT SPEZIFIZIERT
Borries, Claudiaclaudia.borries (at) dlr.dehttps://orcid.org/0000-0001-9948-3353NICHT SPEZIFIZIERT
Liu, Huixinliu.huixin.295 (at) m.kyushu-u.ac.jphttps://orcid.org/0000-0001-7073-4366NICHT SPEZIFIZIERT
Datum:2025
Referierte Publikation:Nein
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:NmF2, long-term changes, Geomagnetic activity and solar wind
Veranstaltungstitel:IAGA-IASPEI Join Scientific Meeting 2025
Veranstaltungsort:Lisbon, Portugal
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:31 August 2025
Veranstaltungsende:5 September 2025
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 - Solar-Terrestrische Kopplungsprozesse
Standort: Neustrelitz
Institute & Einrichtungen:Institut für Solar-Terrestrische Physik > Solar-Terrestrische Kopplungsprozesse
Hinterlegt von: Tan Jun Rios, Maria Gloria
Hinterlegt am:22 Sep 2025 09:36
Letzte Änderung:22 Sep 2025 09:36

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
OpenAIRE Validator logo electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.