Signature of the stratosphere–troposphere coupling on recent record-breaking Antarctic sea-ice anomalies
In February 2023, the sea-ice extent around Antarctica dropped to 1.79×106 km2, setting a satellite-era record low for the second straight year. Recent records stress the need for further research into the factors behind record-breaking Antarctic sea-ice anomalies. By influencing the circumpolar wes...
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Copernicus Publications
2023
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00070108 2023-12-31T10:00:36+01:00 Signature of the stratosphere–troposphere coupling on recent record-breaking Antarctic sea-ice anomalies Cordero, Raúl R. Feron, Sarah Damiani, Alessandro Llanillo, Pedro J. Carrasco, Jorge Khan, Alia L. Bintanja, Richard Ouyang, Zutao Casassa, Gino 2023-11 electronic https://doi.org/10.5194/tc-17-4995-2023 https://noa.gwlb.de/receive/cop_mods_00070108 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00068467/tc-17-4995-2023.pdf https://tc.copernicus.org/articles/17/4995/2023/tc-17-4995-2023.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-17-4995-2023 https://noa.gwlb.de/receive/cop_mods_00070108 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00068467/tc-17-4995-2023.pdf https://tc.copernicus.org/articles/17/4995/2023/tc-17-4995-2023.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/tc-17-4995-2023 2023-12-04T00:22:44Z In February 2023, the sea-ice extent around Antarctica dropped to 1.79×106 km2, setting a satellite-era record low for the second straight year. Recent records stress the need for further research into the factors behind record-breaking Antarctic sea-ice anomalies. By influencing the circumpolar westerly winds, the stratospheric polar vortex has played a major role in the Antarctic surface climate in recent decades. However, the footprint of the polar vortex variability in the year-to-year changes in the Antarctic sea-ice cover remains obscured. Here, we use satellite retrievals and reanalysis data to study the response of the sea-ice extent around Antarctica to changes in the polar vortex strength. We focus on the last 2 decades that saw sharp changes in the stratospheric zonal flow, the tropospheric westerly winds and the sea-ice cover (the latter climbed to record highs in 2013 and 2014 before dropping to record lows in 2017, 2022 and 2023). Our results suggest that this unprecedented interannual variability is noticeably influenced by the polar vortex dynamics. The signature of the stratosphere–troposphere coupling is apparent in recent records (highs and lows) in the sea-ice extent around Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 17 11 4995 5006 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Cordero, Raúl R. Feron, Sarah Damiani, Alessandro Llanillo, Pedro J. Carrasco, Jorge Khan, Alia L. Bintanja, Richard Ouyang, Zutao Casassa, Gino Signature of the stratosphere–troposphere coupling on recent record-breaking Antarctic sea-ice anomalies |
topic_facet |
article Verlagsveröffentlichung |
description |
In February 2023, the sea-ice extent around Antarctica dropped to 1.79×106 km2, setting a satellite-era record low for the second straight year. Recent records stress the need for further research into the factors behind record-breaking Antarctic sea-ice anomalies. By influencing the circumpolar westerly winds, the stratospheric polar vortex has played a major role in the Antarctic surface climate in recent decades. However, the footprint of the polar vortex variability in the year-to-year changes in the Antarctic sea-ice cover remains obscured. Here, we use satellite retrievals and reanalysis data to study the response of the sea-ice extent around Antarctica to changes in the polar vortex strength. We focus on the last 2 decades that saw sharp changes in the stratospheric zonal flow, the tropospheric westerly winds and the sea-ice cover (the latter climbed to record highs in 2013 and 2014 before dropping to record lows in 2017, 2022 and 2023). Our results suggest that this unprecedented interannual variability is noticeably influenced by the polar vortex dynamics. The signature of the stratosphere–troposphere coupling is apparent in recent records (highs and lows) in the sea-ice extent around Antarctica. |
format |
Article in Journal/Newspaper |
author |
Cordero, Raúl R. Feron, Sarah Damiani, Alessandro Llanillo, Pedro J. Carrasco, Jorge Khan, Alia L. Bintanja, Richard Ouyang, Zutao Casassa, Gino |
author_facet |
Cordero, Raúl R. Feron, Sarah Damiani, Alessandro Llanillo, Pedro J. Carrasco, Jorge Khan, Alia L. Bintanja, Richard Ouyang, Zutao Casassa, Gino |
author_sort |
Cordero, Raúl R. |
title |
Signature of the stratosphere–troposphere coupling on recent record-breaking Antarctic sea-ice anomalies |
title_short |
Signature of the stratosphere–troposphere coupling on recent record-breaking Antarctic sea-ice anomalies |
title_full |
Signature of the stratosphere–troposphere coupling on recent record-breaking Antarctic sea-ice anomalies |
title_fullStr |
Signature of the stratosphere–troposphere coupling on recent record-breaking Antarctic sea-ice anomalies |
title_full_unstemmed |
Signature of the stratosphere–troposphere coupling on recent record-breaking Antarctic sea-ice anomalies |
title_sort |
signature of the stratosphere–troposphere coupling on recent record-breaking antarctic sea-ice anomalies |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-17-4995-2023 https://noa.gwlb.de/receive/cop_mods_00070108 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00068467/tc-17-4995-2023.pdf https://tc.copernicus.org/articles/17/4995/2023/tc-17-4995-2023.pdf |
genre |
Antarc* Antarctic Antarctica Sea ice The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica Sea ice The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-17-4995-2023 https://noa.gwlb.de/receive/cop_mods_00070108 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00068467/tc-17-4995-2023.pdf https://tc.copernicus.org/articles/17/4995/2023/tc-17-4995-2023.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-17-4995-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
11 |
container_start_page |
4995 |
op_container_end_page |
5006 |
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1786788974034944000 |