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Article: Ionospheric Electrodynamic Response to Solar Flares in September 2017

TitleIonospheric Electrodynamic Response to Solar Flares in September 2017
Authors
Issue Date2021
Citation
Journal of Geophysical Research: Space Physics, 2021, v. 126, n. 11, article no. e2021JA029745 How to Cite?
AbstractIn this work, the Thermosphere-Ionosphere-Electrodynamics General Circulation Model is used to investigate the responses of ionospheric electrodynamic processes to the solar flares at the flare peaks and the underlying physical mechanisms on September 6 and 10, 2017. Simulations show that solar flares increased global daytime currents and reduced the eastward electric fields during the daytime from the equator to middle latitudes. Furthermore, westward equatorial electric fields and equatorial counter electrojets occurred in the early morning. At the flare peak, these electrodynamic responses are predominantly related to the enhanced E-region conductivity by flares, as the responses of neutral winds and F-region conductivity to flares are negligible. Specifically, the Cowling conductance enhancement is not the major process causing the reduction of zonal electric fields. This electric field reduction is primarily associated with the decrease of the ratio between the field line-integrated wind-driven currents and the conductance. The flare-induced conductivity enhancement is larger but the background wind speed is smaller in the E-region than in the F-region, as a result, the increase of total integrated wind-driven currents is less than the conductance enhancement.
Persistent Identifierhttp://hdl.handle.net/10722/341335
ISSN
2023 Impact Factor: 2.6
2023 SCImago Journal Rankings: 0.845
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, Junjie-
dc.contributor.authorLei, Jiuhou-
dc.contributor.authorWang, Wenbin-
dc.contributor.authorLiu, Jing-
dc.contributor.authorMaute, Astrid-
dc.contributor.authorQian, Liying-
dc.contributor.authorZhang, Ruilong-
dc.contributor.authorDang, Tong-
dc.date.accessioned2024-03-13T08:42:00Z-
dc.date.available2024-03-13T08:42:00Z-
dc.date.issued2021-
dc.identifier.citationJournal of Geophysical Research: Space Physics, 2021, v. 126, n. 11, article no. e2021JA029745-
dc.identifier.issn2169-9380-
dc.identifier.urihttp://hdl.handle.net/10722/341335-
dc.description.abstractIn this work, the Thermosphere-Ionosphere-Electrodynamics General Circulation Model is used to investigate the responses of ionospheric electrodynamic processes to the solar flares at the flare peaks and the underlying physical mechanisms on September 6 and 10, 2017. Simulations show that solar flares increased global daytime currents and reduced the eastward electric fields during the daytime from the equator to middle latitudes. Furthermore, westward equatorial electric fields and equatorial counter electrojets occurred in the early morning. At the flare peak, these electrodynamic responses are predominantly related to the enhanced E-region conductivity by flares, as the responses of neutral winds and F-region conductivity to flares are negligible. Specifically, the Cowling conductance enhancement is not the major process causing the reduction of zonal electric fields. This electric field reduction is primarily associated with the decrease of the ratio between the field line-integrated wind-driven currents and the conductance. The flare-induced conductivity enhancement is larger but the background wind speed is smaller in the E-region than in the F-region, as a result, the increase of total integrated wind-driven currents is less than the conductance enhancement.-
dc.languageeng-
dc.relation.ispartofJournal of Geophysical Research: Space Physics-
dc.titleIonospheric Electrodynamic Response to Solar Flares in September 2017-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1029/2021JA029745-
dc.identifier.scopuseid_2-s2.0-85119680818-
dc.identifier.volume126-
dc.identifier.issue11-
dc.identifier.spagearticle no. e2021JA029745-
dc.identifier.epagearticle no. e2021JA029745-
dc.identifier.eissn2169-9402-
dc.identifier.isiWOS:000723106200040-

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