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

Tucker G. B. | Zendy

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

Author(s) -

Tucker G. B.

Publication year - 1957

Publication title -

quarterly journal of the royal meteorological society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.744

H-Index - 143

eISSN - 1477-870X

pISSN - 0035-9009

DOI - 10.1002/qj.49708335703

Subject(s) - zonal and meridional , latitude , atmospheric sciences , circulation (fluid dynamics) , middle latitudes , northern hemisphere , atmosphere (unit) , climatology , flux (metallurgy) , geology , meridional flow , atmospheric circulation , southern hemisphere , meteorology , geodesy , physics , mechanics , materials science , metallurgy

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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