[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.%[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 min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1＜7.5 mm/h时,降水效率E平稳,为3.2％ ～2.7％,平均3.0％；当雨强1≥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.
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