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《Chinese Journal of Atmospheric Sciences》 2010-03
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Area Rainfall Estimation by Using Radar,Raingauge,and Particle Laser-Based Optical Measurement Instrument

FANG Bin1,2,3,BAN Xianxiu2,GUO Xueliang4,and XIAO Hui1 1 Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029 2 Liaoning Weather Modification Office,Shenyang 110016 3 Graduate University of Chinese Academy of Sciences,Beijing 100049 4 Chinese Academy of Meteorological Sciences,Beijing 100081  
In order to improve observing accuracy of precipitation,a new method of area rainfall estimation by using radar,raingauge,and particle laser-based optical measurement instrument is presented.Firstly,the relationship of Z-I based on raindrop size distribution observed by the particle laser-based optical measurement is established.Then in order to obtain optimal adjusting factor,the variational method is used to adjust the measured adjusting factor between radar echo and raingauge data.Finally,rainfall is calculated by using the optimal adjusting factor.This paper analyzes the precipitation process on May 15,2007 in Liaoning Province.The result indicates that the actual rainfall spatial distribution can be reflected preferably and the observing accuracy of precipitation can be improved by using radar,raingauge,and particle laser-based optical measurement instrument.
【Fund】: 国家自然科学基金资助项目40875080;; 国家自然科学基金资助项目40333033;; 国家科技支撑计划项目2006BAC12B00-1;; 辽宁省科技厅“十一五”重点攻关项目2006210001
【CateGory Index】: P426.6
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