The University of Southampton
University of Southampton Institutional Repository

Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model

Depth-Integrated Vorticity Budget of the Southern Ocean from a General Circulation Model
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 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.
0022-3670
2569-2582
Wells, N.C.
4c27167c-f972-4822-9614-d6ca8d8223b5
de Cuevas, B.A.
01cc697c-2832-4de6-87bf-bf9f16c1f906
Wells, N.C.
4c27167c-f972-4822-9614-d6ca8d8223b5
de Cuevas, B.A.
01cc697c-2832-4de6-87bf-bf9f16c1f906

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).

Record type: Article

Abstract

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.

Full text not available from this repository.

More information

Published date: November 1995
Organisations: National Oceanography Centre

Identifiers

Local EPrints ID: 360516
URI: https://eprints.soton.ac.uk/id/eprint/360516
ISSN: 0022-3670
PURE UUID: 896584fa-c49d-4fa7-b891-dcb8414fce36

Catalogue record

Date deposited: 11 Dec 2013 16:35
Last modified: 18 Jul 2017 03:11

Export record

Altmetrics

Contributors

Author: N.C. Wells
Author: B.A. de Cuevas

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×