Impact of sudden stratospheric warmings on the neutral density, temperature and wind in the MLT region
In this study, the neutral density and horizontal wind observed by the four meteor radars, as well as the temperature measured by the Microwave Limb Sounder (MLS) onboard the Aura satellite are used to examine the response of neutral density, wind, and temperature in the MLT region to the stratosphe...
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ftdoajarticles:oai:doaj.org/article:a0b173a1774a43f197afb2e66ed2073c 2023-06-11T04:17:12+02:00 Impact of sudden stratospheric warmings on the neutral density, temperature and wind in the MLT region Baozhu Zhou Wen Yi Xianghui Xue Hailun Ye Jie Zeng Guozhu Li Masaki Tsutsumi Njål Gulbrandsen Tingdi Chen Xiankang Dou 2023-05-01T00:00:00Z https://doi.org/10.3389/fspas.2023.1192985 https://doaj.org/article/a0b173a1774a43f197afb2e66ed2073c EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fspas.2023.1192985/full https://doaj.org/toc/2296-987X 2296-987X doi:10.3389/fspas.2023.1192985 https://doaj.org/article/a0b173a1774a43f197afb2e66ed2073c Frontiers in Astronomy and Space Sciences, Vol 10 (2023) meteor radar (MR) mesopheric winds mesospheric temperature sudden stratospheric warming (SSW) mesosphere and lower thermosphere (MLT) Astronomy QB1-991 Geophysics. Cosmic physics QC801-809 article 2023 ftdoajarticles https://doi.org/10.3389/fspas.2023.1192985 2023-05-07T00:33:05Z In this study, the neutral density and horizontal wind observed by the four meteor radars, as well as the temperature measured by the Microwave Limb Sounder (MLS) onboard the Aura satellite are used to examine the response of neutral density, wind, and temperature in the MLT region to the stratospheric sudden warmings (SSWs) during 2005 to 2021 in the Northern Hemisphere. The four meteor radars include the Svalbard (78.3°N, 16°E) and Tromsø (69.6°N, 19.2°E) meteor radars at high latitudes and the Mohe (53.5°N, 122.3°E) and Beijing (40.3°N, 116.2°E) meteor radars at middle latitudes. The superposed epoch analysis results indicate that: 1) the neutral density over Svalbard and Tromsø at high latitude increased at the beginning of SSWs and decreased after the zonal mean stratospheric temperature reached the maximum. However, the neutral density over Mohe at midlatitudes decreased in neutral density at the beginning of SSW and increase after the zonal mean stratospheric temperature reached the maximum. 2) The zonal wind at high latitudes show a westward enhancement at the beginning of SSWs and then shows an eastward enhancement after the stratospheric temperature reaches maximum. However, the zonal wind at midlatitudes shows an opposite variation to at high latitudes, with an eastward enhancement at the onset and changing to westward enhancements after the stratospheric temperature maximum. The meridional winds at high and midlatitudes show a southward enhancement after the onset of SSW and then show a northward enhancement after the stratospheric temperature maximum. 3) In general, the temperature in the MLT region decreased throughout SSWs. However, as the latitudes decrease, the temperature cooling appears to lag a few days to the higher latitudes, and the degree of cooling will decrease relatively. Article in Journal/Newspaper Svalbard Tromsø Directory of Open Access Journals: DOAJ Articles Svalbard Tromsø Frontiers in Astronomy and Space Sciences 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
meteor radar (MR) mesopheric winds mesospheric temperature sudden stratospheric warming (SSW) mesosphere and lower thermosphere (MLT) Astronomy QB1-991 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
meteor radar (MR) mesopheric winds mesospheric temperature sudden stratospheric warming (SSW) mesosphere and lower thermosphere (MLT) Astronomy QB1-991 Geophysics. Cosmic physics QC801-809 Baozhu Zhou Wen Yi Xianghui Xue Hailun Ye Jie Zeng Guozhu Li Masaki Tsutsumi Njål Gulbrandsen Tingdi Chen Xiankang Dou Impact of sudden stratospheric warmings on the neutral density, temperature and wind in the MLT region |
topic_facet |
meteor radar (MR) mesopheric winds mesospheric temperature sudden stratospheric warming (SSW) mesosphere and lower thermosphere (MLT) Astronomy QB1-991 Geophysics. Cosmic physics QC801-809 |
description |
In this study, the neutral density and horizontal wind observed by the four meteor radars, as well as the temperature measured by the Microwave Limb Sounder (MLS) onboard the Aura satellite are used to examine the response of neutral density, wind, and temperature in the MLT region to the stratospheric sudden warmings (SSWs) during 2005 to 2021 in the Northern Hemisphere. The four meteor radars include the Svalbard (78.3°N, 16°E) and Tromsø (69.6°N, 19.2°E) meteor radars at high latitudes and the Mohe (53.5°N, 122.3°E) and Beijing (40.3°N, 116.2°E) meteor radars at middle latitudes. The superposed epoch analysis results indicate that: 1) the neutral density over Svalbard and Tromsø at high latitude increased at the beginning of SSWs and decreased after the zonal mean stratospheric temperature reached the maximum. However, the neutral density over Mohe at midlatitudes decreased in neutral density at the beginning of SSW and increase after the zonal mean stratospheric temperature reached the maximum. 2) The zonal wind at high latitudes show a westward enhancement at the beginning of SSWs and then shows an eastward enhancement after the stratospheric temperature reaches maximum. However, the zonal wind at midlatitudes shows an opposite variation to at high latitudes, with an eastward enhancement at the onset and changing to westward enhancements after the stratospheric temperature maximum. The meridional winds at high and midlatitudes show a southward enhancement after the onset of SSW and then show a northward enhancement after the stratospheric temperature maximum. 3) In general, the temperature in the MLT region decreased throughout SSWs. However, as the latitudes decrease, the temperature cooling appears to lag a few days to the higher latitudes, and the degree of cooling will decrease relatively. |
format |
Article in Journal/Newspaper |
author |
Baozhu Zhou Wen Yi Xianghui Xue Hailun Ye Jie Zeng Guozhu Li Masaki Tsutsumi Njål Gulbrandsen Tingdi Chen Xiankang Dou |
author_facet |
Baozhu Zhou Wen Yi Xianghui Xue Hailun Ye Jie Zeng Guozhu Li Masaki Tsutsumi Njål Gulbrandsen Tingdi Chen Xiankang Dou |
author_sort |
Baozhu Zhou |
title |
Impact of sudden stratospheric warmings on the neutral density, temperature and wind in the MLT region |
title_short |
Impact of sudden stratospheric warmings on the neutral density, temperature and wind in the MLT region |
title_full |
Impact of sudden stratospheric warmings on the neutral density, temperature and wind in the MLT region |
title_fullStr |
Impact of sudden stratospheric warmings on the neutral density, temperature and wind in the MLT region |
title_full_unstemmed |
Impact of sudden stratospheric warmings on the neutral density, temperature and wind in the MLT region |
title_sort |
impact of sudden stratospheric warmings on the neutral density, temperature and wind in the mlt region |
publisher |
Frontiers Media S.A. |
publishDate |
2023 |
url |
https://doi.org/10.3389/fspas.2023.1192985 https://doaj.org/article/a0b173a1774a43f197afb2e66ed2073c |
geographic |
Svalbard Tromsø |
geographic_facet |
Svalbard Tromsø |
genre |
Svalbard Tromsø |
genre_facet |
Svalbard Tromsø |
op_source |
Frontiers in Astronomy and Space Sciences, Vol 10 (2023) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fspas.2023.1192985/full https://doaj.org/toc/2296-987X 2296-987X doi:10.3389/fspas.2023.1192985 https://doaj.org/article/a0b173a1774a43f197afb2e66ed2073c |
op_doi |
https://doi.org/10.3389/fspas.2023.1192985 |
container_title |
Frontiers in Astronomy and Space Sciences |
container_volume |
10 |
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1768376125257416704 |