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《Yangtze River》 2018-12
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Application of multi-source rainfall information in flood simulation of Qinhuai River Basin

HUA Shenbing;SONG Zongpeng;HU Ju;JIN Shuanglong;ZHANG Zhouxiang;ZHU Dehua;WANG Xintao;State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems,China Electric Power Research Institute;College of Hydrometeorology,Nanjing University of Information Science & Technology;State Grid Shandong Electric Power Company Liaocheng Power Supply Company;  
The quantitative precipitation estimated from weather radar and satellite remote sensing techniques can provide alternative rainfall observation data for hydrological simulation and flood forecasting due to the high spatial-temporal resolution and large-area coverage characteristics. However,the reliability and accuracy of such precipitation products varies,thus,the accuracy assessment needs to be conducted in advance. In this study,the rainfall products obtained from S-band weather radar and the high-resolution satellites,including CMORPH,Era-Interim,GPM,and TRMM( 3 B42 V7) were compared and evaluated with the rainfall station data and three floods in Qinhuai River basin were simulated by using the Xin'anjiang hydrologic model.The results show that: the S-band radar rainfall estimates and four satellite precipitation products are suitable for runoff simulation; the rainfall products derived from S-band radar and GPM outperformed other rainfall products,with the average Nash-Sutcliff coefficient of 0. 92,followed by TRMM( 3 B42 V7),Era-Interim,and CMORPH satellite precipitation data. The trends of hydrographs derived from the S-band radar and GPM rainfall products are consistent with each other. This study can provide reference for the application of weather radar and common satellite precipitation data in hydrological forecasting of watershed flood.
【Fund】: 国家电网公司总部科技项目(NYB17201600142)
【CateGory Index】: TV122
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