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The significance of dynamic instability in atmospheric motions

✍ Scribed by J. S. Sawyer

Publisher
John Wiley and Sons
Year
1949
Tongue
English
Weight
630 KB
Volume
75
Category
Article
ISSN
0035-9009

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✦ Synopsis

Abstract

A discussion is given of the criterion for a special type of dynamic instability first derived by H. Solberg, viz. :β€”that the anti‐cyclonic wind shear along an isentropic surface should exceed the coriolis parameter. It is concluded that this criterion has no direct bearing on the formation of extratropical cyclones but it may be important in respect of the limit which it imposes on the wind shear to the south of the β€œjet stream”. Dynamic instability of this type may also be important in connection with the formation of tropical cyclones and certain features of frontal structure.

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