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An observation of gravity waves in shear flow in the lower stratosphere

โœ Scribed by D. N. Axford

Publisher
John Wiley and Sons
Year
1970
Tongue
English
Weight
765 KB
Volume
96
Category
Article
ISSN
0035-9009

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โœฆ Synopsis

Abstract

During a routine instrumentation flight check in the lower stratosphere periodic variations of temperature and winds were observed. It is deduced that these variations are gravity waves which appear to be associated with a narrow frontal zone separating regions with different potential temperatures. Vertical and horizontal wind changes of ยฑ 1 m s^โˆ’1^ and potential temperature variations of up to ยฑ 2ยฐC are measured with a wavelength of 2.3 km. The breakdown of waves such as these may be associated with observations of clear air turbulence in the stratosphere along shear layers separating weak flows of different origin.

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โœ R. O. R. Y. Thompson ๐Ÿ“‚ Article ๐Ÿ“… 1978 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 431 KB

## Abstract A series of radiosonde flights over Laverton, Victoria (38ยฐS), is found to have sufficient vertical (100m) and temporal (3 h) resolution, and sufficient length (28 days) to detect inertial waves. Fourier analysis shows that in the stratosphere there is a strong anticyclonic rotation of