The response of the Antarctic Circumpolar Current to recent climate change
Observations show a significant intensification of the Southern Hemisphere westerlies, the prevailing winds between the latitudes of 30° and 60° S, over the past decades. A continuation of this intensification trend is projected by climate scenarios for the twenty-first century. The response of the...
Published in: | Nature Geoscience |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Nature Publishing Group
2008
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/7462/ https://oceanrep.geomar.de/id/eprint/7462/1/398_B%C3%B6ning_2008_TheResponseOfTheAntarctic_Artzeit_pubid10753.pdf https://doi.org/10.1038/ngeo362 |
id |
ftoceanrep:oai:oceanrep.geomar.de:7462 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:7462 2023-05-15T13:43:20+02:00 The response of the Antarctic Circumpolar Current to recent climate change Böning, Claus W. Dispert, Astrid Visbeck, Martin Rintoul, S. R. Schwarzkopf, Franziska U. 2008 text https://oceanrep.geomar.de/id/eprint/7462/ https://oceanrep.geomar.de/id/eprint/7462/1/398_B%C3%B6ning_2008_TheResponseOfTheAntarctic_Artzeit_pubid10753.pdf https://doi.org/10.1038/ngeo362 en eng Nature Publishing Group https://oceanrep.geomar.de/id/eprint/7462/1/398_B%C3%B6ning_2008_TheResponseOfTheAntarctic_Artzeit_pubid10753.pdf Böning, C. W. , Dispert, A., Visbeck, M. , Rintoul, S. R. and Schwarzkopf, F. U. (2008) The response of the Antarctic Circumpolar Current to recent climate change. Nature Geoscience, 1 . pp. 864-869. DOI 10.1038/ngeo362 <https://doi.org/10.1038/ngeo362>. doi:10.1038/ngeo362 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2008 ftoceanrep https://doi.org/10.1038/ngeo362 2023-04-07T14:54:44Z Observations show a significant intensification of the Southern Hemisphere westerlies, the prevailing winds between the latitudes of 30° and 60° S, over the past decades. A continuation of this intensification trend is projected by climate scenarios for the twenty-first century. The response of the Antarctic Circumpolar Current and the carbon sink in the Southern Ocean to changes in wind stress and surface buoyancy fluxes is under debate. Here we analyse the Argo network of profiling floats and historical oceanographic data to detect coherent hemispheric-scale warming and freshening trends that extend to depths of more than 1,000 m. The warming and freshening is partly related to changes in the properties of the water masses that make up the Antarctic Circumpolar Current, which are consistent with the anthropogenic changes in heat and freshwater fluxes suggested by climate models. However, we detect no increase in the tilt of the surfaces of equal density across the Antarctic Circumpolar Current, in contrast to coarse-resolution model studies. Our results imply that the transport in the Antarctic Circumpolar Current and meridional overturning in the Southern Ocean are insensitive to decadal changes in wind stress. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Southern Ocean The Antarctic Nature Geoscience 1 12 864 869 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Observations show a significant intensification of the Southern Hemisphere westerlies, the prevailing winds between the latitudes of 30° and 60° S, over the past decades. A continuation of this intensification trend is projected by climate scenarios for the twenty-first century. The response of the Antarctic Circumpolar Current and the carbon sink in the Southern Ocean to changes in wind stress and surface buoyancy fluxes is under debate. Here we analyse the Argo network of profiling floats and historical oceanographic data to detect coherent hemispheric-scale warming and freshening trends that extend to depths of more than 1,000 m. The warming and freshening is partly related to changes in the properties of the water masses that make up the Antarctic Circumpolar Current, which are consistent with the anthropogenic changes in heat and freshwater fluxes suggested by climate models. However, we detect no increase in the tilt of the surfaces of equal density across the Antarctic Circumpolar Current, in contrast to coarse-resolution model studies. Our results imply that the transport in the Antarctic Circumpolar Current and meridional overturning in the Southern Ocean are insensitive to decadal changes in wind stress. |
format |
Article in Journal/Newspaper |
author |
Böning, Claus W. Dispert, Astrid Visbeck, Martin Rintoul, S. R. Schwarzkopf, Franziska U. |
spellingShingle |
Böning, Claus W. Dispert, Astrid Visbeck, Martin Rintoul, S. R. Schwarzkopf, Franziska U. The response of the Antarctic Circumpolar Current to recent climate change |
author_facet |
Böning, Claus W. Dispert, Astrid Visbeck, Martin Rintoul, S. R. Schwarzkopf, Franziska U. |
author_sort |
Böning, Claus W. |
title |
The response of the Antarctic Circumpolar Current to recent climate change |
title_short |
The response of the Antarctic Circumpolar Current to recent climate change |
title_full |
The response of the Antarctic Circumpolar Current to recent climate change |
title_fullStr |
The response of the Antarctic Circumpolar Current to recent climate change |
title_full_unstemmed |
The response of the Antarctic Circumpolar Current to recent climate change |
title_sort |
response of the antarctic circumpolar current to recent climate change |
publisher |
Nature Publishing Group |
publishDate |
2008 |
url |
https://oceanrep.geomar.de/id/eprint/7462/ https://oceanrep.geomar.de/id/eprint/7462/1/398_B%C3%B6ning_2008_TheResponseOfTheAntarctic_Artzeit_pubid10753.pdf https://doi.org/10.1038/ngeo362 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/7462/1/398_B%C3%B6ning_2008_TheResponseOfTheAntarctic_Artzeit_pubid10753.pdf Böning, C. W. , Dispert, A., Visbeck, M. , Rintoul, S. R. and Schwarzkopf, F. U. (2008) The response of the Antarctic Circumpolar Current to recent climate change. Nature Geoscience, 1 . pp. 864-869. DOI 10.1038/ngeo362 <https://doi.org/10.1038/ngeo362>. doi:10.1038/ngeo362 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1038/ngeo362 |
container_title |
Nature Geoscience |
container_volume |
1 |
container_issue |
12 |
container_start_page |
864 |
op_container_end_page |
869 |
_version_ |
1766187562414637056 |