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On the diurnal variation of precipitation, particularly over central U.S.A., and its relation to large‐scale orographic circulation systems
Author(s) -
Bleeker W.,
Andre M. J.
Publication year - 1951
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49707733211
Subject(s) - precipitation , daytime , orographic lift , climatology , environmental science , diurnal temperature variation , atmospheric sciences , nocturnal , midnight , circulation (fluid dynamics) , atmospheric circulation , divergence (linguistics) , orography , meteorology , geology , geography , physics , mechanics , linguistics , philosophy , astronomy
The diurnal variation of precipitation is discussed and attention is drawn to the high frequency of night‐time rains over central U.S.A. A new theory for explaining this nocturnal maximum and the relatively low activity of precipitation in daytime is proposed by suggesting that cooling and heating processes during the night and the day set up a large‐scale circulation system east of the Rocky Mountains. The existence of this circulation system is proved by computation of the changes which occur in the convergence‐divergence field at 4,000, 10,000 and 18,000 ft in the free atmosphere.