Journal article
Eddy saturation of equilibrated circumpolar currents
- Abstract:
- This study uses a sector configuration of an ocean general circulation model to examine the sensitivity of circumpolar transport and meridional overturning to changes in Southern Ocean wind stress and global diapycnal mixing. At eddy-permitting, and finer, resolution, the sensitivity of circumpolar transport to forcing magnitude is drastically reduced. At sufficiently high resolution, there is little or no sensitivity of circumpolar transport to wind stress, even in the limit of no wind. In contrast, the meridional overturning circulation continues to vary with Southern Ocean wind stress, but with reduced sensitivity in the limit of high wind stress. Both the circumpolar transport and meridional overturning continue to vary with diapycnal diffusivity at all model resolutions. The circumpolar transport becomes less sensitive to changes in diapycnal diffusivity at higher resolution, although sensitivity always remains. In contrast, the overturning circulation is more sensitive to change in diapycnal diffusivity when the resolution is high enough to permit mesoscale eddies.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 6.7MB, Terms of use)
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- Publisher copy:
- 10.1175/JPO-D-12-095.1
Authors
- Publisher:
- American Meteorological Society
- Journal:
- Journal of Physical Oceanography More from this journal
- Volume:
- 43
- Issue:
- 3
- Pages:
- 507-532
- Publication date:
- 2013-01-01
- DOI:
- EISSN:
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1520-0485
- ISSN:
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0022-3670
- Pubs id:
-
pubs:384013
- UUID:
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uuid:9c9d05d6-be2f-4c3a-85fb-ff0c9aef8592
- Local pid:
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pubs:384013
- Source identifiers:
-
384013
- Deposit date:
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2013-11-16
Terms of use
- Copyright holder:
- American Meteorological Society
- Copyright date:
- 2013
- Notes:
- ©2013 American Meteorological Society. Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act September 2010 Page 2 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a web site or in a searchable database, or other uses of this material, except as exempted by the above statement, requires written permission or a license from the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (http://www.ametsoc.org/) or from the AMS at 617-227-2425 or [email protected].
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