摘要
利用1982年7月在宁夏银川机场地面4次观测获取滴谱资料,分析了宁夏夏季层状云雨滴的瞬时和平均谱及有关物理量的特征,总结出了层状云降水的一些主要特征。文中给出了4次降水的平均谱分布及谱参数的演变,进行了M-P分布的拟合分析,得出雨滴谱基本符合M-P分布。还分别建立了雷达反射率因子、雨强和雨水含量之间的相关关系,并分析了层状云降水的特点以及与积雨云、混合云的特征量进行对比,总结出三种降水的不同之处。
Rain drop size distributions （RDSD） have been measured four times in Ningxia during July 1982. The features of the instantaneous raindrop size distributions and the average raindrop size distributions, and its physical parameters are analyzed combining general circulation patterns and synoptic systems. We summarized the characteristic of the stratiformis precipitation. The features of average raindrop size distributions and evolution of microstructure parameters are analyzed and M-P distribution is used to fit the features. Then we established and analyzed the relationship between radar refleetivity, rainfall intensity and rainwater content. The features of raindrop size distributions for stratus, cumulus and mixing clouds are compared, in order to conclude the cumulus and merging cloud characteristic differences among three types of precipitation.
出处
《气象科学》
CSCD
北大核心
2009年第1期97-101,共5页
Journal of the Meteorological Sciences
基金
国家自然科学基金重点项目(40537034)
关键词
雨滴谱
层状云降水
M—P分布
Raindrop size distribution Stratiformis precipitation M-P distribution
