Main Factors Influencing Severe Precipitation over Southwestern Zhejiang Caused by Tropical Cyclones
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Abstract:
The main factors influencing tropical cyclone precipitation in Lishui from 1950 to 2010 are analyzed in the aspects of the moving path, duration and intensity of tropical cyclones，westerly trough, southwest monsoon, and topography. The results show that the tropical cyclones landed from the south from Yuhuan to Xiamen are the direct type which influenced Lishui. There is a positive correlation between duration and average maximum process rainfall, as well as maximum process rainfall. The relevance between typhoon intensity and precipitation is very high. The westerly trough not only influenced the moving path of tropical cyclones, but also provided adequate water vapor. At the same time the combination of cold air from the trough behind and tropical cyclones induced often another precipitation center. The southwest monsoon provided water vapor for tropical cyclones, which enhanced precipitation. The unique topography of Lishui also enhanced the precipitation of tropical cyclones landed from Xiamen to the south of Yuhuan against the mountain.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.