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Tendency prediction of precipitation and inundation in July in the Sichuan Basin, China
Author(s) -
JuYing Chen
Publication year - 1984
Publication title -
journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0196-1748
DOI - 10.1002/joc.3370040507
Subject(s) - climatology , precipitation , structural basin , subtropical ridge , flood myth , flooding (psychology) , circulation (fluid dynamics) , china , atmospheric circulation , geology , environmental science , meteorology , geography , geomorphology , psychology , physics , archaeology , psychotherapist , thermodynamics
In July 1981, there occurred a comparatively severe flood and inundation in the Sichuan Basin. Before its occurrence, certain precursory phenomena appeared in the May 500 mb circulation field. The Western Pacific subtropical high apparently strengthened and extended westward, the mid‐latitudinal zonal circulation weakened, whereas the meridional circulation strengthened. At the same time, the astronomical background suggested a rainy period. All these precursory features unanimously indicated the probability of heavy precipitation and a tendency for flooding and inundation in July‐August, but especially in July, in the Basin. In this paper analysis and discussion emphasize the astronomical factors, the circulation factors and the prediction instrumentation which resulted in a successful prediction.