under a Creative Commons License. Ocean Science On the fast response of the Southern Ocean to changes in the zonal wind
Abstract. Model studies of the Southern Ocean, reported here, show that the Antarctic Circumpolar Current responds within two days to changes in the zonal wind stress at the latitudes of Drake Passage. Further investigation shows that the response is primarily barotropic and that, as one might expec...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.382.6630 2023-05-15T13:34:26+02:00 under a Creative Commons License. Ocean Science On the fast response of the Southern Ocean to changes in the zonal wind D. J. Webb B. A. De Cuevas The Pennsylvania State University CiteSeerX Archives 2007 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.382.6630 http://hal.archives-ouvertes.fr/docs/00/29/83/43/PDF/os-3-417-2007.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.382.6630 http://hal.archives-ouvertes.fr/docs/00/29/83/43/PDF/os-3-417-2007.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://hal.archives-ouvertes.fr/docs/00/29/83/43/PDF/os-3-417-2007.pdf text 2007 ftciteseerx 2016-09-18T00:26:28Z Abstract. Model studies of the Southern Ocean, reported here, show that the Antarctic Circumpolar Current responds within two days to changes in the zonal wind stress at the latitudes of Drake Passage. Further investigation shows that the response is primarily barotropic and that, as one might expect, it is controlled by topography. Analysis of the results show that the changes in the barotropic flow are sufficient to transfer the changed surface wind stress to the underlying topography and that during this initial phase baroclinic processes are not involved. The model results also show that the Deacon Cell responds to changes in the wind stress on the same rapid time scale. It is shown that the changes in the Deacon Cell can also be explained by the change in the barotropic velocity field, an increase in the zonal wind stress producing an increased northward flow in shallow regions and southward flow where the ocean is deep. This new explanation is unexpected as previously the Deacon Cell has been thought of as a baroclinic feature of the ocean. The results imply that where baroclinic processes do appear to be involved in either the zonal momentum balance of the Southern Ocean or the formation of the Deacon Cell, they are part of the long term baroclinic response of the ocean’s density field to the changes in the barotropic flow. 1 Text Antarc* Antarctic Drake Passage Southern Ocean Unknown Antarctic Deacon ENVELOPE(-59.987,-59.987,-73.248,-73.248) Drake Passage Southern Ocean The Antarctic |
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ftciteseerx |
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English |
description |
Abstract. Model studies of the Southern Ocean, reported here, show that the Antarctic Circumpolar Current responds within two days to changes in the zonal wind stress at the latitudes of Drake Passage. Further investigation shows that the response is primarily barotropic and that, as one might expect, it is controlled by topography. Analysis of the results show that the changes in the barotropic flow are sufficient to transfer the changed surface wind stress to the underlying topography and that during this initial phase baroclinic processes are not involved. The model results also show that the Deacon Cell responds to changes in the wind stress on the same rapid time scale. It is shown that the changes in the Deacon Cell can also be explained by the change in the barotropic velocity field, an increase in the zonal wind stress producing an increased northward flow in shallow regions and southward flow where the ocean is deep. This new explanation is unexpected as previously the Deacon Cell has been thought of as a baroclinic feature of the ocean. The results imply that where baroclinic processes do appear to be involved in either the zonal momentum balance of the Southern Ocean or the formation of the Deacon Cell, they are part of the long term baroclinic response of the ocean’s density field to the changes in the barotropic flow. 1 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
D. J. Webb B. A. De Cuevas |
spellingShingle |
D. J. Webb B. A. De Cuevas under a Creative Commons License. Ocean Science On the fast response of the Southern Ocean to changes in the zonal wind |
author_facet |
D. J. Webb B. A. De Cuevas |
author_sort |
D. J. Webb |
title |
under a Creative Commons License. Ocean Science On the fast response of the Southern Ocean to changes in the zonal wind |
title_short |
under a Creative Commons License. Ocean Science On the fast response of the Southern Ocean to changes in the zonal wind |
title_full |
under a Creative Commons License. Ocean Science On the fast response of the Southern Ocean to changes in the zonal wind |
title_fullStr |
under a Creative Commons License. Ocean Science On the fast response of the Southern Ocean to changes in the zonal wind |
title_full_unstemmed |
under a Creative Commons License. Ocean Science On the fast response of the Southern Ocean to changes in the zonal wind |
title_sort |
under a creative commons license. ocean science on the fast response of the southern ocean to changes in the zonal wind |
publishDate |
2007 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.382.6630 http://hal.archives-ouvertes.fr/docs/00/29/83/43/PDF/os-3-417-2007.pdf |
long_lat |
ENVELOPE(-59.987,-59.987,-73.248,-73.248) |
geographic |
Antarctic Deacon Drake Passage Southern Ocean The Antarctic |
geographic_facet |
Antarctic Deacon Drake Passage Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Drake Passage Southern Ocean |
genre_facet |
Antarc* Antarctic Drake Passage Southern Ocean |
op_source |
http://hal.archives-ouvertes.fr/docs/00/29/83/43/PDF/os-3-417-2007.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.382.6630 http://hal.archives-ouvertes.fr/docs/00/29/83/43/PDF/os-3-417-2007.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766052758029336576 |