Climatic Characteristics of Hails and Layout of Hail Suppression in Shijiazhuang
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Abstract:
Using the data from 16 counties (cities) of Shijiazhuang from 1959 to 2007 (including county annals), an analysis is made of the spatial and temporal distribution of hails in Shijiazhuang and their paths. The results indicate: (1) There were cyclical changes with the periods being 1, 11, 12, and 25 years in the number of hail days in Shijiazhuang; mutations appeared in 1971 and 2003 (2) Hails in Shijiazhuang occurred most frequently from late May to July, 14:00 to 20:00 (3) Hails occurred more frequently in the western mountain areas than in the eastern plain; more in the areas near the rivers. (4) Through analysis, three hail suppression operation lines are set up, and hail suppression points increased，so to rationalize the arrangement of hail suppression points and carry out the stepwise hail suppression operations.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.