Characteristics of Raindrop Size Distribution and Precipitation Produced by Clouds of Different Types over Dongguan
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Abstract:
The characteristics of 15 events precipitation in 2010 are analyzed based on the data observed by the raindrop disdrometer in Donguan, Guangdong Province. Six typical cases, including 2 stratiform precipitation (S), 2 Mixed convective and Stratiform precipitation (M), and 2 convective precipitation (C) events, are selected to analyze the relevance of various feature parameters and the characteristics of rain drop size distribution. The results show that the regularities of the distribution of parameters, including average particle diameter, average rainfall intensity, average rainwater content, the largest cube root diameter, and the most rainfall intensity, are C>M>S; the raindrop spectrum models of the precipitation produced by the same type of clouds are very close to each other, and there is a single peak spectrum in 2 Stype precipitation. The raindrop size distributions of Mand Ctype precipitation are obvious 2 or multipeak model. There are more bigger raindrops in Mand Ctype precipitation than in Stype precipitation; the relevance between rainwater content and rainfall intensity is the best, and that between radar reflectivity and rainfall intensity is the next; there are mainly small particles below 1 mm in Stype precipitation; the widths of raindrop spectrum of Mand Ctype precipitation are bigger than that of Stype precipitation， and there are more particles of over 1 mm.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.