Response of the American equatorial ionization anomaly to 2016 Arctic sudden stratospheric warming events
Apart from the rapid ionospheric response to geomagnetic forcing originating from the Sun during extreme space weather events, forcing from the lower atmosphere below still exerts a significant influence on the ionosphere during quiet-time conditions. This study examines the ionospheric response of...
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ftdoajarticles:oai:doaj.org/article:68c780261e5a4e8a9d4c0c8a6ba07d44 2023-05-15T15:11:55+02:00 Response of the American equatorial ionization anomaly to 2016 Arctic sudden stratospheric warming events O. R. Idolor A. O. Akala O. S. Bolaji E. O. Oyeyemi A. T. Agbele 2022-11-01T00:00:00Z https://doi.org/10.3389/fspas.2022.1024607 https://doaj.org/article/68c780261e5a4e8a9d4c0c8a6ba07d44 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fspas.2022.1024607/full https://doaj.org/toc/2296-987X 2296-987X doi:10.3389/fspas.2022.1024607 https://doaj.org/article/68c780261e5a4e8a9d4c0c8a6ba07d44 Frontiers in Astronomy and Space Sciences, Vol 9 (2022) equatorial ionization anomaly sudden stratospheric warming vertical drift reverse fountain effects traveling atmospheric disturbances (TADs) prompt penetration electric field (PPEF) Astronomy QB1-991 Geophysics. Cosmic physics QC801-809 article 2022 ftdoajarticles https://doi.org/10.3389/fspas.2022.1024607 2022-12-30T22:57:03Z Apart from the rapid ionospheric response to geomagnetic forcing originating from the Sun during extreme space weather events, forcing from the lower atmosphere below still exerts a significant influence on the ionosphere during quiet-time conditions. This study examines the ionospheric response of the equatorial ionization anomaly (EIA) in the American sector to the combined influence of the cascades of sudden stratospheric warming (SSW) events and the geomagnetic storms that coexisted with them during the period of January–March 2016. We adopted a multi-instrument and multi-modeling approach with the study locations spanning ±40° geomagnetic latitudes. Our results showed a hemispheric asymmetry in the total electron content and change in total electron content (ΔTEC) distribution with higher enhancement clearly visible in the Northern Hemisphere in comparison to the Southern Hemisphere (NH). Semidiurnal signatures were observed in both ΔTEC and equatorial electrojet parameters for some days. The double-peak zonal mean zonal wind amplitude days supported the formation of the reverse fountain effects. The different SSW peak temperature days also showed either positive or negative ionospheric response. Generally, orientation of the prompt penetration electric field (PPEF) and their strengths at either daytime or nighttime played a weak role in the ionosphere response during some of the geomagnetic storms. The negative and positive ionospheric responses under geomagnetic storm conditions were ascribed to changes in the composition of the thermosphere, prompt penetration electric field (PPEF), and traveling atmospheric disturbances (TADs). Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Eia ENVELOPE(7.755,7.755,63.024,63.024) Frontiers in Astronomy and Space Sciences 9 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
equatorial ionization anomaly sudden stratospheric warming vertical drift reverse fountain effects traveling atmospheric disturbances (TADs) prompt penetration electric field (PPEF) Astronomy QB1-991 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
equatorial ionization anomaly sudden stratospheric warming vertical drift reverse fountain effects traveling atmospheric disturbances (TADs) prompt penetration electric field (PPEF) Astronomy QB1-991 Geophysics. Cosmic physics QC801-809 O. R. Idolor A. O. Akala O. S. Bolaji E. O. Oyeyemi A. T. Agbele Response of the American equatorial ionization anomaly to 2016 Arctic sudden stratospheric warming events |
topic_facet |
equatorial ionization anomaly sudden stratospheric warming vertical drift reverse fountain effects traveling atmospheric disturbances (TADs) prompt penetration electric field (PPEF) Astronomy QB1-991 Geophysics. Cosmic physics QC801-809 |
description |
Apart from the rapid ionospheric response to geomagnetic forcing originating from the Sun during extreme space weather events, forcing from the lower atmosphere below still exerts a significant influence on the ionosphere during quiet-time conditions. This study examines the ionospheric response of the equatorial ionization anomaly (EIA) in the American sector to the combined influence of the cascades of sudden stratospheric warming (SSW) events and the geomagnetic storms that coexisted with them during the period of January–March 2016. We adopted a multi-instrument and multi-modeling approach with the study locations spanning ±40° geomagnetic latitudes. Our results showed a hemispheric asymmetry in the total electron content and change in total electron content (ΔTEC) distribution with higher enhancement clearly visible in the Northern Hemisphere in comparison to the Southern Hemisphere (NH). Semidiurnal signatures were observed in both ΔTEC and equatorial electrojet parameters for some days. The double-peak zonal mean zonal wind amplitude days supported the formation of the reverse fountain effects. The different SSW peak temperature days also showed either positive or negative ionospheric response. Generally, orientation of the prompt penetration electric field (PPEF) and their strengths at either daytime or nighttime played a weak role in the ionosphere response during some of the geomagnetic storms. The negative and positive ionospheric responses under geomagnetic storm conditions were ascribed to changes in the composition of the thermosphere, prompt penetration electric field (PPEF), and traveling atmospheric disturbances (TADs). |
format |
Article in Journal/Newspaper |
author |
O. R. Idolor A. O. Akala O. S. Bolaji E. O. Oyeyemi A. T. Agbele |
author_facet |
O. R. Idolor A. O. Akala O. S. Bolaji E. O. Oyeyemi A. T. Agbele |
author_sort |
O. R. Idolor |
title |
Response of the American equatorial ionization anomaly to 2016 Arctic sudden stratospheric warming events |
title_short |
Response of the American equatorial ionization anomaly to 2016 Arctic sudden stratospheric warming events |
title_full |
Response of the American equatorial ionization anomaly to 2016 Arctic sudden stratospheric warming events |
title_fullStr |
Response of the American equatorial ionization anomaly to 2016 Arctic sudden stratospheric warming events |
title_full_unstemmed |
Response of the American equatorial ionization anomaly to 2016 Arctic sudden stratospheric warming events |
title_sort |
response of the american equatorial ionization anomaly to 2016 arctic sudden stratospheric warming events |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fspas.2022.1024607 https://doaj.org/article/68c780261e5a4e8a9d4c0c8a6ba07d44 |
long_lat |
ENVELOPE(7.755,7.755,63.024,63.024) |
geographic |
Arctic Eia |
geographic_facet |
Arctic Eia |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Frontiers in Astronomy and Space Sciences, Vol 9 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fspas.2022.1024607/full https://doaj.org/toc/2296-987X 2296-987X doi:10.3389/fspas.2022.1024607 https://doaj.org/article/68c780261e5a4e8a9d4c0c8a6ba07d44 |
op_doi |
https://doi.org/10.3389/fspas.2022.1024607 |
container_title |
Frontiers in Astronomy and Space Sciences |
container_volume |
9 |
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1766342689232519168 |