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Observation of a quasi-periodic oscillation due to gravity waves in a shallow radiation fog

✍ Scribed by Peter G. Duynkerke

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 815 KB
Volume: 117
Category: Article
ISSN: 0035-9009
DOI: 10.1002/qj.49711750205

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✦ Synopsis

Abstract

Quasi‐periodic oscillations with a period of about 40 min are observed in visibility, temperature, water vapour, wind speed and long‐wave radiation during the fully developed stage of a shallow radiation fog. These oscillations were observed up to a height of about 60 m, whereas the fog extended up to a height of about 30 m. An interpretation of the oscillations is given in terms of gravity waves, which are rather typical under these very stable conditions.

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## Abstract Quasi‐periodic oscillations of period 10–15min, observed in net flux of long‐wave radiation, surface temperature and wind during the development of a radiation fog on 7 December 1971, were found to have a significant phase relationship which persisted for about three hours. An interpret