沈阳夏季降水效率分析

Analysis on Summer Precipitation Efficiency in Shenyang

[目的]分析沈阳夏季的降水效率。[方法]采用胡志晋先生提出的估算云水资源的方法,利用＂QFW-1型双通道微波辐射计＂观测的垂直累积液态水含量与＂粒子激光探测仪＂（Parsivel）反演的1 m in时间间隔的雨强资料,对沈阳地区2007年7-8月的降水效率进行了分析。[结果]当雨强I〈7.5 mm/h时,降水效率E平稳,为3.2%-2.7%,平均3.0%;当雨强I≥7.5 mm/h时,降水效率E随雨强I的增加呈线性增加。雨强越大,空中剩余的液态水含量越多,人工增雨潜力越大。[结论]该研究为分析空中云水资源和人工增雨潜力提供指导作用。

[Objective] The research aimed to analyze summer precipitation efficiency in Shenyang.[Method] By using the method which estimated the cloud water resources and was put forward by Hu Zhijin,based on the vertical accumulated liquid water content which was observed by ＂QFW-1 dual-channel microwave radiometer＂ and the rain intensity data which had 1 min time interval and were inverted by ＂particle laser detector＂（Parsivel）,the precipitation efficiency in Shenyang area during July-August,2007 was analyzed.[Result] When the rain intensity I 7.5 mm/h,the precipitation efficiency E was stable and was during 3.2%-2.7%.The average value was 3.0%.When the rain intensity I ≥7.5 mm/h,the precipitation efficiency E presented the linear increasing as the rain intensity I increased.The bigger the rain intensity was,the more the remaining liquid water content in the air was,and the bigger the artificial precipitation potential was.[Conclusion] The research provided the guidance role for analyzing the cloud water resources in the air and the artificial precipitation potential.