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The Leipzig wind profile and the boundary layer wind-stress relationship

✍ Scribed by D. J. Carson; F. B. Smith

Publisher: John Wiley and Sons
Year: 1973
Tongue: English
Weight: 416 KB
Volume: 99
Category: Article
ISSN: 0035-9009
DOI: 10.1002/qj.49709941914

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✦ Synopsis

Abstract

Swinbank's recent claim that Mildner's so‐called Leipzig wind profile data for the atmospheric boundary layer support the hypothesis that the shearing stress vector and the wind vector are parallel, is critically examined and compared with the conflicting classical hypothesis that stress and velocity shear are parallel as previously applied by Lettau. The geostrophic wind direction, known only imprecisely from Mildner's measurements, is allowed to vary in order to produce best‐fit profiles consistent with each hypothesis and generally accepted ‘boundary’ conditions. The degree of fit (theory to measurements) is roughly ten times better in the classical case than in Swinbank's case, the former showing a r.m.s. angular difference between the stress and shear vectors in the lowest 800 m of only 2°.

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