多普勒雷达速度场特征在人工增雨作业中的判据指标应用  

Application of Doppler Radar Velocity Field Characters to Precipitation Enhancement Operation

作　　者：李红斌[1] 何玉科[1] 姚展予[2] 赵繁盛[1] 张家伟[1] 

机构地区：[1]大连市人工影响天气办公室,辽宁大连116001 [2]中国气象科学研究院中国气象局云雾物理重点开放实验室

出　　处：《气象》2008年第6期102-106,I0002,I0003,共7页Meteorological Monthly

基　　金：中国气象局新技术推广应用项目(CMATG2006M47)资助

摘　　要：对大连市2003年6月至2005年10月43次降水天气过程的多普勒雷达速度场资料进行了统计和分析,给出了几种常见的雷达回波零速度线特征分别呈"S"型、"弓"型和速度不对称型等分布特征时对人工增雨作业潜力分析和作业条件判别的几个判据指标,作为增雨作业决策的辅助判别指标。By statistical analysis of Doppler radar velocity field data of forty-three rainfall processes from June 2003 to October 2005 at Dalian district, the effects of radar velocity field characters on future rairffall variation and precipitation enhancement condition were gained, the indications of several familiar echo velocity characters of the cloud systems on the developing changes of the coming rairffall were obtained. Several criterions were concluded for analyzing the precipitation potential region and the opportunity for precipitation enhancement operation while radar echo showed “s” or bow shape. By using these characters as assistant criterions in precipitation enhancement command, the practical validation showed good results in the precipitation enhancement operation at Dalian district in spring and streamer of 2006. These criterions have become as important estimating indexes in the real-time precipitation enhancement operation control at Dalian district.

关 键 词：雷达速度场特征 人工增雨 作业判据 

分 类 号：P481[天文地球—大气科学及气象学] O482.4[理学—固体物理]