✦ LIBER ✦

Evidence of a mean meridional circulation in the atmosphere from surface wind observations

✍ Scribed by G. B. Tucker

Publisher: John Wiley and Sons
Year: 1957
Tongue: English
Weight: 745 KB
Volume: 83
Category: Article
ISSN: 0035-9009
DOI: 10.1002/qj.49708335703

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✦ Synopsis

Abstract

Surface‐wind observations in the Northern Hemisphere are analysed and fields of mean meridional and zonal motion obtained. From these, profiles of mean meridional motion as a function of latitude are deduced. The results are consistent with a direct meridional circulation in low latitudes and an indirect circulation in mid‐latitudes, both attaining speeds of 1 to 2 m/sec at the surface. This scheme is found to be consistent with a decrease of upward flux of westerly momentum with height (convergence) in the surface layers in low latitudes and a decrease of downward flux in mid‐latitudes.

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