Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW
Simultaneous meteor radar, MLS, and MERRA observations show that the Antarctic mesopause cooled to 26 K, in response to a 66 K warming in the stratosphere during the 2019 minor sudden stratospheric warming (SSW) in the Southern Hemisphere. Depressed gravity wave (GW) activity and the enhanced upward...
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ftdatacite:10.5281/zenodo.6098859 2023-05-15T13:33:25+02:00 Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW S.Eswaraiah Kyong-Hwan Seo1 Kondapalli Niranjan Kumar Hwang, Jun Young Wonseok Lee M.Venkat Ratnam G.Venkata Chalapathi Chalachew Kindie Mengist Kim, Yang Ha 2022 https://dx.doi.org/10.5281/zenodo.6098859 https://zenodo.org/record/6098859 unknown Zenodo https://dx.doi.org/10.5281/zenodo.6098860 Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess CC-BY article-journal ScholarlyArticle JournalArticle 2022 ftdatacite https://doi.org/10.5281/zenodo.6098859 https://doi.org/10.5281/zenodo.6098860 2022-03-10T12:33:21Z Simultaneous meteor radar, MLS, and MERRA observations show that the Antarctic mesopause cooled to 26 K, in response to a 66 K warming in the stratosphere during the 2019 minor sudden stratospheric warming (SSW) in the Southern Hemisphere. Depressed gravity wave (GW) activity and the enhanced upward propagation of 10-day planetary waves (PWs) are prominent during SSWs. We observed an enhancement in carbon monoxide through carbon dioxide (CO 2 ) photolysis and a decrease in ozone (O 3 ) at 75 km during peak SSW. Hence, mesospheric cooling (MC) is due to the combined effects of PWs, CO 2 infrared cooling, and O 3 depletion but not the adiabatic cooling of GWs. PW analysis suggests that the chemical tracers that induced MC were uplifted from the lower atmosphere by anthropogenic and other sources and propagated through meridional circulation. Thus, the polar mesosphere was significantly affected by the 2019 SH SSW. Simultaneous meteor radar, MLS, and MERRA observations show that the Antarctic mesopause cooled to 26 K, in response to a 66 K warming in the stratosphere during the 2019 minor sudden stratospheric warming (SSW) in the Southern Hemisphere. Depressed gravity wave (GW) activity and the enhanced upward propagation of 10-day planetary waves (PWs) are prominent during SSWs. We observed an enhancement in carbon monoxide through carbon dioxide (CO 2 ) photolysis and a decrease in ozone (O 3 ) at 75 km during peak SSW. Hence, mesospheric cooling (MC) is due to the combined effects of PWs, CO 2 infrared cooling, and O 3 depletion but not the adiabatic cooling of GWs. PW analysis suggests that the chemical tracers that induced MC were uplifted from the lower atmosphere by anthropogenic and other sources and propagated through meridional circulation. Thus, the polar mesosphere was significantly affected by the 2019 SH SSW. Article in Journal/Newspaper Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Merra ENVELOPE(12.615,12.615,65.816,65.816) The Antarctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
description |
Simultaneous meteor radar, MLS, and MERRA observations show that the Antarctic mesopause cooled to 26 K, in response to a 66 K warming in the stratosphere during the 2019 minor sudden stratospheric warming (SSW) in the Southern Hemisphere. Depressed gravity wave (GW) activity and the enhanced upward propagation of 10-day planetary waves (PWs) are prominent during SSWs. We observed an enhancement in carbon monoxide through carbon dioxide (CO 2 ) photolysis and a decrease in ozone (O 3 ) at 75 km during peak SSW. Hence, mesospheric cooling (MC) is due to the combined effects of PWs, CO 2 infrared cooling, and O 3 depletion but not the adiabatic cooling of GWs. PW analysis suggests that the chemical tracers that induced MC were uplifted from the lower atmosphere by anthropogenic and other sources and propagated through meridional circulation. Thus, the polar mesosphere was significantly affected by the 2019 SH SSW. Simultaneous meteor radar, MLS, and MERRA observations show that the Antarctic mesopause cooled to 26 K, in response to a 66 K warming in the stratosphere during the 2019 minor sudden stratospheric warming (SSW) in the Southern Hemisphere. Depressed gravity wave (GW) activity and the enhanced upward propagation of 10-day planetary waves (PWs) are prominent during SSWs. We observed an enhancement in carbon monoxide through carbon dioxide (CO 2 ) photolysis and a decrease in ozone (O 3 ) at 75 km during peak SSW. Hence, mesospheric cooling (MC) is due to the combined effects of PWs, CO 2 infrared cooling, and O 3 depletion but not the adiabatic cooling of GWs. PW analysis suggests that the chemical tracers that induced MC were uplifted from the lower atmosphere by anthropogenic and other sources and propagated through meridional circulation. Thus, the polar mesosphere was significantly affected by the 2019 SH SSW. |
format |
Article in Journal/Newspaper |
author |
S.Eswaraiah Kyong-Hwan Seo1 Kondapalli Niranjan Kumar Hwang, Jun Young Wonseok Lee M.Venkat Ratnam G.Venkata Chalapathi Chalachew Kindie Mengist Kim, Yang Ha |
spellingShingle |
S.Eswaraiah Kyong-Hwan Seo1 Kondapalli Niranjan Kumar Hwang, Jun Young Wonseok Lee M.Venkat Ratnam G.Venkata Chalapathi Chalachew Kindie Mengist Kim, Yang Ha Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
author_facet |
S.Eswaraiah Kyong-Hwan Seo1 Kondapalli Niranjan Kumar Hwang, Jun Young Wonseok Lee M.Venkat Ratnam G.Venkata Chalapathi Chalachew Kindie Mengist Kim, Yang Ha |
author_sort |
S.Eswaraiah |
title |
Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
title_short |
Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
title_full |
Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
title_fullStr |
Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
title_full_unstemmed |
Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
title_sort |
unusual antarctic mesospheric cooling during 2019 sh minor ssw |
publisher |
Zenodo |
publishDate |
2022 |
url |
https://dx.doi.org/10.5281/zenodo.6098859 https://zenodo.org/record/6098859 |
long_lat |
ENVELOPE(12.615,12.615,65.816,65.816) |
geographic |
Antarctic Merra The Antarctic |
geographic_facet |
Antarctic Merra The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://dx.doi.org/10.5281/zenodo.6098860 |
op_rights |
Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5281/zenodo.6098859 https://doi.org/10.5281/zenodo.6098860 |
_version_ |
1766042052222517248 |