Synchronous intensification and warming of Antarctic Bottom Water outflow from the Weddell Gyre
Antarctic Bottom Water (AABW), the densest water in the global overturning circulation, has warmed in recent decades, most notably in the Atlantic. Time series recorded within the boundary currents immediately upstream and downstream of the most significant outflow of AABW from the Weddell Sea indic...
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American Geophysical Union
2011
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ftnerc:oai:nora.nerc.ac.uk:14056 2023-05-15T13:45:11+02:00 Synchronous intensification and warming of Antarctic Bottom Water outflow from the Weddell Gyre Meredith, Michael P. Gordon, Arnold L. Naveira Garabato, Alberto C. Abrahamsen, E. Povl Huber, Bruce A. Jullion, Loïc Venables, Hugh J. 2011 text http://nora.nerc.ac.uk/id/eprint/14056/ https://nora.nerc.ac.uk/id/eprint/14056/1/grl27791.pdf http://www.agu.org/journals/gl/gl1103/2010GL046265/ en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/14056/1/grl27791.pdf Meredith, Michael P. orcid:0000-0002-7342-7756 Gordon, Arnold L.; Naveira Garabato, Alberto C.; Abrahamsen, E. Povl orcid:0000-0001-5924-5350 Huber, Bruce A.; Jullion, Loïc; Venables, Hugh J. 2011 Synchronous intensification and warming of Antarctic Bottom Water outflow from the Weddell Gyre. Geophysical Research Letters, 38 (3), L03603. 4, pp. https://doi.org/10.1029/2010GL046265 <https://doi.org/10.1029/2010GL046265> Marine Sciences Meteorology and Climatology Publication - Article PeerReviewed 2011 ftnerc https://doi.org/10.1029/2010GL046265 2023-02-04T19:28:57Z Antarctic Bottom Water (AABW), the densest water in the global overturning circulation, has warmed in recent decades, most notably in the Atlantic. Time series recorded within the boundary currents immediately upstream and downstream of the most significant outflow of AABW from the Weddell Sea indicate that raised outflow temperatures are synchronous with stronger boundary current flows. These changes occur rapidly in response to changes in wind forcing, suggesting that barotropic dynamics and the response of the bottom Ekman layer are significant. The observed synchronicity indicates that the previously-detected weakening of the export of the colder forms of AABW from the Weddell Sea need not be associated with a reduction in the total flux of AABW exported via this route. These points need careful consideration when attributing the observed AABW warming in the Atlantic, and when determining its contribution to global heat budgets and sea level rise. Article in Journal/Newspaper Antarc* Antarctic Weddell Sea Natural Environment Research Council: NERC Open Research Archive Antarctic Weddell Sea Weddell Geophysical Research Letters 38 3 n/a n/a |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Marine Sciences Meteorology and Climatology |
spellingShingle |
Marine Sciences Meteorology and Climatology Meredith, Michael P. Gordon, Arnold L. Naveira Garabato, Alberto C. Abrahamsen, E. Povl Huber, Bruce A. Jullion, Loïc Venables, Hugh J. Synchronous intensification and warming of Antarctic Bottom Water outflow from the Weddell Gyre |
topic_facet |
Marine Sciences Meteorology and Climatology |
description |
Antarctic Bottom Water (AABW), the densest water in the global overturning circulation, has warmed in recent decades, most notably in the Atlantic. Time series recorded within the boundary currents immediately upstream and downstream of the most significant outflow of AABW from the Weddell Sea indicate that raised outflow temperatures are synchronous with stronger boundary current flows. These changes occur rapidly in response to changes in wind forcing, suggesting that barotropic dynamics and the response of the bottom Ekman layer are significant. The observed synchronicity indicates that the previously-detected weakening of the export of the colder forms of AABW from the Weddell Sea need not be associated with a reduction in the total flux of AABW exported via this route. These points need careful consideration when attributing the observed AABW warming in the Atlantic, and when determining its contribution to global heat budgets and sea level rise. |
format |
Article in Journal/Newspaper |
author |
Meredith, Michael P. Gordon, Arnold L. Naveira Garabato, Alberto C. Abrahamsen, E. Povl Huber, Bruce A. Jullion, Loïc Venables, Hugh J. |
author_facet |
Meredith, Michael P. Gordon, Arnold L. Naveira Garabato, Alberto C. Abrahamsen, E. Povl Huber, Bruce A. Jullion, Loïc Venables, Hugh J. |
author_sort |
Meredith, Michael P. |
title |
Synchronous intensification and warming of Antarctic Bottom Water outflow from the Weddell Gyre |
title_short |
Synchronous intensification and warming of Antarctic Bottom Water outflow from the Weddell Gyre |
title_full |
Synchronous intensification and warming of Antarctic Bottom Water outflow from the Weddell Gyre |
title_fullStr |
Synchronous intensification and warming of Antarctic Bottom Water outflow from the Weddell Gyre |
title_full_unstemmed |
Synchronous intensification and warming of Antarctic Bottom Water outflow from the Weddell Gyre |
title_sort |
synchronous intensification and warming of antarctic bottom water outflow from the weddell gyre |
publisher |
American Geophysical Union |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/14056/ https://nora.nerc.ac.uk/id/eprint/14056/1/grl27791.pdf http://www.agu.org/journals/gl/gl1103/2010GL046265/ |
geographic |
Antarctic Weddell Sea Weddell |
geographic_facet |
Antarctic Weddell Sea Weddell |
genre |
Antarc* Antarctic Weddell Sea |
genre_facet |
Antarc* Antarctic Weddell Sea |
op_relation |
https://nora.nerc.ac.uk/id/eprint/14056/1/grl27791.pdf Meredith, Michael P. orcid:0000-0002-7342-7756 Gordon, Arnold L.; Naveira Garabato, Alberto C.; Abrahamsen, E. Povl orcid:0000-0001-5924-5350 Huber, Bruce A.; Jullion, Loïc; Venables, Hugh J. 2011 Synchronous intensification and warming of Antarctic Bottom Water outflow from the Weddell Gyre. Geophysical Research Letters, 38 (3), L03603. 4, pp. https://doi.org/10.1029/2010GL046265 <https://doi.org/10.1029/2010GL046265> |
op_doi |
https://doi.org/10.1029/2010GL046265 |
container_title |
Geophysical Research Letters |
container_volume |
38 |
container_issue |
3 |
container_start_page |
n/a |
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n/a |
_version_ |
1766215653318983680 |