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Article: The modeled response of the mean winter circulation to zonally averaged SST trends
- Article from:
- Journal of Climate
- Article date:
- November 1, 2001
- Author:
CopyrightCopyright American Meteorological Society Nov 1, 2001. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
The response of the atmospheric winter circulation in both hemispheres to changes in the meridional gradient of sea surface temperature (SST) is examined in an atmospheric general circulation model. Climatological SSTs are employed for the control run. The other runs differ in that a zonally symmetric component is added to or subtracted from the climatological SST field. The meridional structure of the variation in SST gradient is based on the observed change in zonally averaged SST over the last century. The SST trend has maxima of about 1 K at high latitudes of both hemispheres. Elsewhere, the increase in SST over the last century is fairly uniform at about 0.5 K.
In both ...