Taking eight stratiform cloud precipitation processes in the summer of 2016 and 2017 in central Ningxia as an example,based on the cloud characteristic parameters retrieved by FY-2G satellite and the precipitation observation data of six national meteorological stations,the correlation between stratiform cloud structure characteristic parameters and precipitation was analyzed by referring to the cloud characteristic parameters and precipitation intensity classification method.The results show that under the background of precipitation,the average cloud top height is 4.0 to 5.3 km,the cloud top temperature is-19.0℃ to-12.0 ℃,the thickness of the supercooled layer is 2.0 to 2.8 km,the cloud optical thickness is 11.0 to 18.0,the effective radius of cloud particles is 8.2 to 11.8pm,the mass content of liquid water in cloud is 100 to 170 g/m2,and the brightness temperature of cloud black body is-18.0 ℃ to-5.0 ℃.The spatial distribution of cloud characteristic parameters is opposite to the distribution trend of cumulative precipitation,and its classification increases from southeast to northwest.Parameters such as cloud top height,cloud top temperature,cloud optical thickness and cloud blackbody brightness temperature respond well to precipitation.The frequency distribution of cloud characteristic parameters in the case of precipitation tends to be higher than that in the case of no precipitation.The probability of heavy precipitation is larger and the probability of weak precipitation is smaller in the cloud system with higher cloud characteristic parameter classification.The probability of heavy precipitation is smaller and the probability of weak precipitation is larger in the cloud system with lower cloud characteristic parameter classification.The research results can provide a reference for analyzing the development and evolution of cloud precipitation and identifying the conditions and effects of artificial weather.
国家科技期刊平台
NSTL
维普
万方数据
