6382 JOURNAL OF CLIMATE VOLUME 19 The Southern Hemisphere Westerlies in a Warming World: Propping Open the Door to the Deep Ocean

A coupled climate model with poleward-intensified westerly winds simulates significantly higher storage of heat and anthropogenic carbon dioxide by the Southern Ocean in the future when compared with the storage in a model with initially weaker, equatorward-biased westerlies. This difference results...

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Bibliographic Details
Main Authors: Joellen L. Russell, Keith W. Dixon, Anand Gnanadesikan, Ronald J. Stouffer, J. R. Toggweiler
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Published: 2005
Subjects:
Southern Ocean
Antarc*
Antarctica
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.143.9147
http://www.gfdl.noaa.gov/reference/bibliography/2006/jlr0602.pdf
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Summary:A coupled climate model with poleward-intensified westerly winds simulates significantly higher storage of heat and anthropogenic carbon dioxide by the Southern Ocean in the future when compared with the storage in a model with initially weaker, equatorward-biased westerlies. This difference results from the larger outcrop area of the dense waters around Antarctica and more vigorous divergence, which remains robust even as rising atmospheric greenhouse gas levels induce warming that reduces the density of surface waters in the Southern Ocean. These results imply that the impact of warming on the stratification of the global ocean may be reduced by the poleward intensification of the westerlies, allowing the ocean to remove additional heat and anthropogenic carbon dioxide from the atmosphere. 1.

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