Intermediate water mass production controlled by southern hemisphere winds

Ribbe, Joachim (2001) Intermediate water mass production controlled by southern hemisphere winds. Geophysical Research Letters, 28 (3). pp. 535-538. ISSN 0094-8276

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Abstract

[Abstract]: It is demonstrated that the production of intermediate water in a coarse resolution ocean general circulation model is controlled by Southern Hemisphere winds. Results from four equilibrium experiments using simplified topography and surface forcing are presented. The first experiment was carried out with no wind forcing, subsequent experiments employed annual mean surface stresses, which were amplified using factors of 0.5, 1, and 2.0 south of 30o S. In all experiments, the salinity minimum characteristic for intermediate water is reproduced. Volume transports are directly proportional to the applied Southern Hemisphere surface stresses. These force an increased export of intermediate water and heat into the South Pacific Ocean northward across 30o S and through Drake Passage into the South Atlantic Ocean. It results in a warming of the South Pacific Ocean, which is at a maximum in the intermediate water density range.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version to be sought. Deposited in accordance with the copyright policy of the publisher.
Depositing User: Dr Joachim Ribbe
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 11 Oct 2007 00:34
Last Modified: 02 Jul 2013 22:36
Uncontrolled Keywords: Southern Ocean; water mass formation; ocean modelling; mixing; convection; intermediate water; air sea interaction; climate
Fields of Research (FOR2008): 04 Earth Sciences > 0405 Oceanography > 040503 Physical Oceanography
Identification Number or DOI: doi: 10.1029/2000GL012242, 2001
URI: http://eprints.usq.edu.au/id/eprint/1077

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