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A further study of the upper westerlies; the structure of the wind field in the eastern North Atlantic and western Europe in January 1950

✍ Scribed by D. H. Johnson

Publisher
John Wiley and Sons
Year
1953
Tongue
English
Weight
411 KB
Volume
79
Category
Article
ISSN
0035-9009

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✦ Synopsis

Abstract

(a) A study of 62 vertical cross‐sections through the middle‐latitude wind fields of January 1950 confirms previous conclusions regarding the broad structure of the upper westerlies.

(b) A mean January section from Greenland to the Mediterranean contains a wind maximum of 60 kt at a height of 9 km, 61°N. Examination of mean winter‐flow patterns for the North Atlantic shows the mean south‐westerly jet stream to be a normal seasonal feature.

(c) Comment is made on two features which require further study : high‐speed currents in the Arctic stratosphere and low‐latitude jet streams.

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## Abstract On the basis of 60 cross‐sections over western Europe and the northeast Atlantic, two for each day of September 1950, it is concluded that: Daily charts are given showing the jet axes and intensities at 300 mb superimposed on the surface analysis. The westerlies always contain one or