Wind profile radar using coherent accumulation technology to improve radar sounding sensitivity, have being applied in precipitation cloud body vertical measurement, which can obtain high resolution entire spectrum information of cloud body return signal. On the basis of precipitation weather statistics for many years, aiming at characteristics of rainfall in Beijing Yanqing, a precipitation cloud classification scheme based on spectral parameter (echo intensity, velocity, spectral width) of wind profile radar have been put forward in this paper. Classification scheme divided precipitation data into shallow convection, shallow stratiform, deep convection, deep stratiform, transition-exclusive and transition-inclusive six types of precipitation. According to this classification scheme, by means of combining the wind profile radar data with dual polarization radar data and simultaneous rain gauge data, the paper analyzed two precipitation processes on September 1, 2012 and June 27, 2013 in Yanqing. The results show that, the vertical profiles of wind profile radar spectral parameter can describes the vertical structure of precipitation clouds accurately, the development trend of echo intensity and the trend of surface precipitation matched very well. When precipitation appears convection, the surface precipitation rate increased obviously, along with high speed region and high spectral width in upper air region. Using the wind profile radar-based classification scheme to distinguishing the type of clouds can reduce the probability of precipitation type misjudgment.
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