Slowdown of Antarctic Bottom Water export driven by climatic wind and sea ice changes ...
<!--!introduction!--> Antarctic Bottom Water (AABW) is a key water mass in the global overturning circulation, flooding most of the world ocean abyss and pivotal for deep ocean ventilation and oceanic heat and carbon exchanges on multi-decadal to millennial timescales. The Weddell Sea contribu...
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GFZ German Research Centre for Geosciences
2023
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Online Access: | https://dx.doi.org/10.57757/iugg23-0821 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016660 |
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ftdatacite:10.57757/iugg23-0821 2023-06-11T04:07:03+02:00 Slowdown of Antarctic Bottom Water export driven by climatic wind and sea ice changes ... Zhou, Shenjie Meijers, Andrew Meredith, Michael Abrahamsen, Povl Holland, Paul Silvano, Alessandro Sallée, Jean-baptiste Østerhus, Svein 2023 https://dx.doi.org/10.57757/iugg23-0821 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016660 unknown GFZ German Research Centre for Geosciences Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 ConferencePaper Oral Article 2023 ftdatacite https://doi.org/10.57757/iugg23-0821 2023-06-01T11:06:47Z <!--!introduction!--> Antarctic Bottom Water (AABW) is a key water mass in the global overturning circulation, flooding most of the world ocean abyss and pivotal for deep ocean ventilation and oceanic heat and carbon exchanges on multi-decadal to millennial timescales. The Weddell Sea contributes nearly half of global AABW through Weddell Sea Deep Water (WSDW), which along with denser underlying Weddell Sea Bottom Water (WSBW), is formed on the continental shelves via complex processes that include sea ice production. Here we report a multi-decadal decline of WSBW volume in repeat hydrographic sections. A 30% reduction of WSBW volume since 1992 is found, with the most significant volume decrease seen in the densest WSBW classes. This is likely driven by a multi-decadal reduction in dense water production on the Weddell Sea continental shelf associated with a >40% decline in the sea ice formation rate there. The ice production decrease is driven by northerly wind trends, partly in response to a ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... Conference Object Antarc* Antarctic Sea ice Weddell Sea DataCite Metadata Store (German National Library of Science and Technology) Antarctic Weddell Weddell Sea |
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DataCite Metadata Store (German National Library of Science and Technology) |
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description |
<!--!introduction!--> Antarctic Bottom Water (AABW) is a key water mass in the global overturning circulation, flooding most of the world ocean abyss and pivotal for deep ocean ventilation and oceanic heat and carbon exchanges on multi-decadal to millennial timescales. The Weddell Sea contributes nearly half of global AABW through Weddell Sea Deep Water (WSDW), which along with denser underlying Weddell Sea Bottom Water (WSBW), is formed on the continental shelves via complex processes that include sea ice production. Here we report a multi-decadal decline of WSBW volume in repeat hydrographic sections. A 30% reduction of WSBW volume since 1992 is found, with the most significant volume decrease seen in the densest WSBW classes. This is likely driven by a multi-decadal reduction in dense water production on the Weddell Sea continental shelf associated with a >40% decline in the sea ice formation rate there. The ice production decrease is driven by northerly wind trends, partly in response to a ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
format |
Conference Object |
author |
Zhou, Shenjie Meijers, Andrew Meredith, Michael Abrahamsen, Povl Holland, Paul Silvano, Alessandro Sallée, Jean-baptiste Østerhus, Svein |
spellingShingle |
Zhou, Shenjie Meijers, Andrew Meredith, Michael Abrahamsen, Povl Holland, Paul Silvano, Alessandro Sallée, Jean-baptiste Østerhus, Svein Slowdown of Antarctic Bottom Water export driven by climatic wind and sea ice changes ... |
author_facet |
Zhou, Shenjie Meijers, Andrew Meredith, Michael Abrahamsen, Povl Holland, Paul Silvano, Alessandro Sallée, Jean-baptiste Østerhus, Svein |
author_sort |
Zhou, Shenjie |
title |
Slowdown of Antarctic Bottom Water export driven by climatic wind and sea ice changes ... |
title_short |
Slowdown of Antarctic Bottom Water export driven by climatic wind and sea ice changes ... |
title_full |
Slowdown of Antarctic Bottom Water export driven by climatic wind and sea ice changes ... |
title_fullStr |
Slowdown of Antarctic Bottom Water export driven by climatic wind and sea ice changes ... |
title_full_unstemmed |
Slowdown of Antarctic Bottom Water export driven by climatic wind and sea ice changes ... |
title_sort |
slowdown of antarctic bottom water export driven by climatic wind and sea ice changes ... |
publisher |
GFZ German Research Centre for Geosciences |
publishDate |
2023 |
url |
https://dx.doi.org/10.57757/iugg23-0821 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016660 |
geographic |
Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Sea ice Weddell Sea |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.57757/iugg23-0821 |
_version_ |
1768379562819846144 |