Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model
An analysis of the depth-integrated vorticity budget of the U.K. Fine Resolution Antarctic Model is used to investigate the mechanisms that maintain and dissipate vorticity in the Antarctic Circumpolar Current (ACC) and adjacent circulations of the Southern Ocean. The individual contributions to the...
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ftsouthampton:oai:eprints.soton.ac.uk:360516 2023-07-30T03:59:10+02:00 Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model Wells, N.C. de Cuevas, B.A. 1995-11 https://eprints.soton.ac.uk/360516/ English eng Wells, N.C. and de Cuevas, B.A. (1995) Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model. Journal of Physical Oceanography, 25 (11), 2569-2582. (doi:10.1175/1520-0485(1995)025<2569:DIVBOT>2.0.CO;2 <http://dx.doi.org/10.1175/1520-0485(1995)025<2569:DIVBOT>2.0.CO;2>). Article PeerReviewed 1995 ftsouthampton https://doi.org/10.1175/1520-0485(1995)025<2569:DIVBOT>2.0.CO;2 2023-07-09T21:50:37Z An analysis of the depth-integrated vorticity budget of the U.K. Fine Resolution Antarctic Model is used to investigate the mechanisms that maintain and dissipate vorticity in the Antarctic Circumpolar Current (ACC) and adjacent circulations of the Southern Ocean. The individual contributions to the vorticity budget are evaluated over the last six years when the model had reached a quasi-steady state. It is shown that the primary balance in the ACC is between the curl of the wind stress and the bottom pressure torque (BPT). Regional analysis reveals that the predominant contribution to BPT is in the Drake Passage, Scotia Sea, and the Argentine Basin. The region to the south of Tasmania and New Zealand also contributes significantly to BPT in the ACC. In addition it is shown that Drake Passage and the Falkland Current are responsible for the major dissipation of the ACC. Within the ACC between 320° and 290°E, there is good correspondence between the integrated southward flow and the curl of the wind stress. Article in Journal/Newspaper Antarc* Antarctic Drake Passage Scotia Sea Southern Ocean University of Southampton: e-Prints Soton Antarctic Argentine Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Drake Passage New Zealand Scotia Sea Southern Ocean The Antarctic |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
An analysis of the depth-integrated vorticity budget of the U.K. Fine Resolution Antarctic Model is used to investigate the mechanisms that maintain and dissipate vorticity in the Antarctic Circumpolar Current (ACC) and adjacent circulations of the Southern Ocean. The individual contributions to the vorticity budget are evaluated over the last six years when the model had reached a quasi-steady state. It is shown that the primary balance in the ACC is between the curl of the wind stress and the bottom pressure torque (BPT). Regional analysis reveals that the predominant contribution to BPT is in the Drake Passage, Scotia Sea, and the Argentine Basin. The region to the south of Tasmania and New Zealand also contributes significantly to BPT in the ACC. In addition it is shown that Drake Passage and the Falkland Current are responsible for the major dissipation of the ACC. Within the ACC between 320° and 290°E, there is good correspondence between the integrated southward flow and the curl of the wind stress. |
format |
Article in Journal/Newspaper |
author |
Wells, N.C. de Cuevas, B.A. |
spellingShingle |
Wells, N.C. de Cuevas, B.A. Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model |
author_facet |
Wells, N.C. de Cuevas, B.A. |
author_sort |
Wells, N.C. |
title |
Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model |
title_short |
Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model |
title_full |
Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model |
title_fullStr |
Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model |
title_full_unstemmed |
Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model |
title_sort |
depth-integrated vorticity budget of the southern ocean from a general circulation model |
publishDate |
1995 |
url |
https://eprints.soton.ac.uk/360516/ |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Antarctic Argentine Curl Drake Passage New Zealand Scotia Sea Southern Ocean The Antarctic |
geographic_facet |
Antarctic Argentine Curl Drake Passage New Zealand Scotia Sea Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Drake Passage Scotia Sea Southern Ocean |
genre_facet |
Antarc* Antarctic Drake Passage Scotia Sea Southern Ocean |
op_relation |
Wells, N.C. and de Cuevas, B.A. (1995) Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model. Journal of Physical Oceanography, 25 (11), 2569-2582. (doi:10.1175/1520-0485(1995)025<2569:DIVBOT>2.0.CO;2 <http://dx.doi.org/10.1175/1520-0485(1995)025<2569:DIVBOT>2.0.CO;2>). |
op_doi |
https://doi.org/10.1175/1520-0485(1995)025<2569:DIVBOT>2.0.CO;2 |
_version_ |
1772809900517228544 |