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Seasonal differences in the response of the high-latitude electron density to solar wind variability in time-scales of days and weeks

Borries, Claudia and Davis, Fredy and Iochem, Pelin and Tasnim, Samira and Vogt, Joachim (2023) Seasonal differences in the response of the high-latitude electron density to solar wind variability in time-scales of days and weeks. XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG), 2023-07-11 - 2023-07-20, Berlin, Germany. doi: 10.57757/IUGG23-2775.

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Abstract

The solar wind impact is expected to cause a regular every day variability of the polar ionosphere. The objective of this presentation is to characterize the ionosphere response to solar wind variability in high-latitudes in time scales of days and weeks. Therefore, we are investigating how the solar wind variability is reflected in the ionosphere variability at Tromso, which is located in Scandinavia at 70°N, 19°E. The solar wind merging electric field is used to approximate the solar wind energy input into the geosystem. It can be shown that on timescales of days and weeks, the magnitude of correlation between TEC and merging electric field reaches similar values to the correlation of TEC and F10.7. However, the results show that the correlation between TEC and solar wind parameters depends strongly on local time, season and solar cycle. There is a clear annual cycle in the variability of the correlation coefficient, with higher correlation values in winter than in summer. The positive correlation in winter close to local midnight hours is considered to be related to precipitation effects increasing the electron densities. During summer in solar maximum condition, clear negative correlation values are retrieved. These are considered to be caused by increased convection and composition changes.

Item URL in elib:https://elib.dlr.de/196195/
Document Type:Conference or Workshop Item (Speech)
Title:Seasonal differences in the response of the high-latitude electron density to solar wind variability in time-scales of days and weeks
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Borries, ClaudiaUNSPECIFIEDhttps://orcid.org/0000-0001-9948-3353UNSPECIFIED
Davis, FredyUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Iochem, PelinUNSPECIFIEDhttps://orcid.org/0000-0003-4308-8439140943669
Tasnim, SamiraUNSPECIFIEDhttps://orcid.org/0000-0002-0305-2071140943671
Vogt, JoachimConstructor University, Bremen, GermanyUNSPECIFIEDUNSPECIFIED
Date:July 2023
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI:10.57757/IUGG23-2775
Status:Published
Keywords:ionosphere, solar wind, space weather,
Event Title:XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Event Location:Berlin, Germany
Event Type:international Conference
Event Start Date:11 July 2023
Event End Date:20 July 2023
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 - Project Space weather research
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics > Solar-Terrestrial Coupling Processes
Deposited By: Borries, Dr. Claudia
Deposited On:22 Aug 2023 09:40
Last Modified:28 May 2024 09:46

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