Amplified Interannual Variation of the Summer Sea Ice in the Weddell Sea, Antarctic After the Late 1990s
Abstract The sea‐ice extent (SIE) in the Weddell Sea plays a crucial role in the Antarctic climate system. Many studies have examined its long‐term trend, however whether its year‐to‐year variation has changed remains unclear. We found an amplified year‐to‐year variance of the Weddell Sea SIE in aus...
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Online Access: | https://doi.org/10.1029/2023GL104924 https://doaj.org/article/128e649ca1a34d8ca820318983a09c4c |
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ftdoajarticles:oai:doaj.org/article:128e649ca1a34d8ca820318983a09c4c 2024-09-15T17:48:12+00:00 Amplified Interannual Variation of the Summer Sea Ice in the Weddell Sea, Antarctic After the Late 1990s Yuanyuan Guo Xiaodan Chen Sihua Huang Zhiping Wen 2023-09-01T00:00:00Z https://doi.org/10.1029/2023GL104924 https://doaj.org/article/128e649ca1a34d8ca820318983a09c4c EN eng Wiley https://doi.org/10.1029/2023GL104924 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2023GL104924 https://doaj.org/article/128e649ca1a34d8ca820318983a09c4c Geophysical Research Letters, Vol 50, Iss 17, Pp n/a-n/a (2023) Antarctic sea ice Southern Annular Mode thermodynamic process Weddell Sea Geophysics. Cosmic physics QC801-809 article 2023 ftdoajarticles https://doi.org/10.1029/2023GL104924 2024-08-05T17:49:23Z Abstract The sea‐ice extent (SIE) in the Weddell Sea plays a crucial role in the Antarctic climate system. Many studies have examined its long‐term trend, however whether its year‐to‐year variation has changed remains unclear. We found an amplified year‐to‐year variance of the Weddell Sea SIE in austral summer since 1998/1999 in observational datasets. Analyses of sea‐ice concentration budget and surface fluxes indicate that it is the thermodynamic process that drives the amplification of SIE variations, rather than the sea‐ice‐drift‐related dynamic process. Compared to 1979–1998, the Southern Annular Mode in the preceding spring shows a closer linkage with the Weddell Sea SIE in 1999–2021 through a stronger and more prolonged impact on sea surface temperature, which thermodynamically modulates local sea ice via changing surface heat and radiation fluxes. Our study helps advance the understanding of extreme low Antarctic‐SIE records occurring in recent decades and improve future projections of the Antarctic sea‐ice variability. Article in Journal/Newspaper Antarc* Antarctic Sea ice Weddell Sea Directory of Open Access Journals: DOAJ Articles Geophysical Research Letters 50 17 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctic sea ice Southern Annular Mode thermodynamic process Weddell Sea Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Antarctic sea ice Southern Annular Mode thermodynamic process Weddell Sea Geophysics. Cosmic physics QC801-809 Yuanyuan Guo Xiaodan Chen Sihua Huang Zhiping Wen Amplified Interannual Variation of the Summer Sea Ice in the Weddell Sea, Antarctic After the Late 1990s |
topic_facet |
Antarctic sea ice Southern Annular Mode thermodynamic process Weddell Sea Geophysics. Cosmic physics QC801-809 |
description |
Abstract The sea‐ice extent (SIE) in the Weddell Sea plays a crucial role in the Antarctic climate system. Many studies have examined its long‐term trend, however whether its year‐to‐year variation has changed remains unclear. We found an amplified year‐to‐year variance of the Weddell Sea SIE in austral summer since 1998/1999 in observational datasets. Analyses of sea‐ice concentration budget and surface fluxes indicate that it is the thermodynamic process that drives the amplification of SIE variations, rather than the sea‐ice‐drift‐related dynamic process. Compared to 1979–1998, the Southern Annular Mode in the preceding spring shows a closer linkage with the Weddell Sea SIE in 1999–2021 through a stronger and more prolonged impact on sea surface temperature, which thermodynamically modulates local sea ice via changing surface heat and radiation fluxes. Our study helps advance the understanding of extreme low Antarctic‐SIE records occurring in recent decades and improve future projections of the Antarctic sea‐ice variability. |
format |
Article in Journal/Newspaper |
author |
Yuanyuan Guo Xiaodan Chen Sihua Huang Zhiping Wen |
author_facet |
Yuanyuan Guo Xiaodan Chen Sihua Huang Zhiping Wen |
author_sort |
Yuanyuan Guo |
title |
Amplified Interannual Variation of the Summer Sea Ice in the Weddell Sea, Antarctic After the Late 1990s |
title_short |
Amplified Interannual Variation of the Summer Sea Ice in the Weddell Sea, Antarctic After the Late 1990s |
title_full |
Amplified Interannual Variation of the Summer Sea Ice in the Weddell Sea, Antarctic After the Late 1990s |
title_fullStr |
Amplified Interannual Variation of the Summer Sea Ice in the Weddell Sea, Antarctic After the Late 1990s |
title_full_unstemmed |
Amplified Interannual Variation of the Summer Sea Ice in the Weddell Sea, Antarctic After the Late 1990s |
title_sort |
amplified interannual variation of the summer sea ice in the weddell sea, antarctic after the late 1990s |
publisher |
Wiley |
publishDate |
2023 |
url |
https://doi.org/10.1029/2023GL104924 https://doaj.org/article/128e649ca1a34d8ca820318983a09c4c |
genre |
Antarc* Antarctic Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Sea ice Weddell Sea |
op_source |
Geophysical Research Letters, Vol 50, Iss 17, Pp n/a-n/a (2023) |
op_relation |
https://doi.org/10.1029/2023GL104924 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2023GL104924 https://doaj.org/article/128e649ca1a34d8ca820318983a09c4c |
op_doi |
https://doi.org/10.1029/2023GL104924 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
17 |
_version_ |
1810289333242953728 |