Cause Analysis of a Sudden Heavy Rain Process
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Abstract:
A heavy rain occurred in Longyan on 18 June 2006 is analyzed by using the data of routine observation, automatic weather stations, satellite pictures, and CINRAD/SA observations. The results show that the favorable environmental condition, ample water vapor condition, strong ascending movement and the invasion of weak cold air caused the heavy rainfall. The heavy rainfall was resulted from the local mesoand smallscale systems emerging from the mesoscale landform. The CINRAD/SA data indicate that the convective cells have the typical features of severe liquid precipitation. The retrieved wind field from radar data shows that the smallscale systems such as wind speed convergence and shear lines are the causes of shortrange severe precipitation.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.