应用多普勒雷达回波参数对长沙地面降水的估算  

Applying Doppler Radar Echo Parameter to Estimate Surface Rainfall in Changsha

作　　者：王治平[1] 张中波[1] 唐林[1] 肖波 夏正龙 丁岳强[1] 

机构地区：[1]湖南省人工影响天气办公室,长沙410007 [2]长沙市气象局 [3]湖南省气象台

出　　处：《气象》2009年第8期104-108,共5页Meteorological Monthly

基　　金：湖南省气象局重点科研课题<湖南省人工影响天气三级作业指挥系统>(200622)资助

摘　　要：利用长沙多普勒雷达回波与地面降雨参数建立了相关计算式与统计特征估算式。将夏季27块积云地面降雨资料进行计算并作相关性检验,得到单因子与多因子多普勒雷达回波参数对积云降雨的估算式,结果表明,50～100km范围内其最大雨强与回波顶高相关性较好,多因子相关中其雨量与回波水平尺度、回波顶高呈正比关系,与回波移动速度呈反比关系。The related equations and characteristic equation were established on the basis of Changsha Doppler radar echo and surface rainfall parameter. Surface rainfall data of 27 summer cumulus were calculated to test the established relationships, then rome estimation equations about single factor or multiple factors were gained. The results show that the most rain intensity is correlated well with echo height in the range of 50-100 kilometers, in multiple factors correlated equations, the surface rainfall is proportional to the horizontal scale and echo height, and is inversely proportional to the echo moving speed.

关 键 词：多普勒雷达 降水 估算 相关性 

分 类 号：P458.123[天文地球—大气科学及气象学] P412.15