基于不同降水产品的WRF-Hydro模式径流模拟——以漳河流域为例  

APPLICATION OF WRF-HYDRO FOR RUNOFF SIMULATION BASED ON DIFFERENT RAINFALL PRODUCTS: TAKING ZHANGHE RIVER BASIN AS AN EXAMPLE

作　　者：高玉芳[1] 吴雨晴 彭涛[2] 顾天威 GAO Yu-fang;WU Yu-qing;PENG Tao;GU Tian-wei(School of Applied Meteorology,Nanjing University of Information Science and Technology,Nanjing 210044,China;Institute of Heavy Rain,CMA/Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research,Wuhan 430205,China;School of Atmoshpheric Science,Nanjing University of information Science&Technology,Nanjing210044,China)

机构地区：[1]南京信息工程大学应用气象学院,江苏南京210044 [2]中国气象局武汉暴雨研究所/湖北省暴雨监测与预警重点试验室,湖北武汉430205 [3]南京信息工程大学大气科学学院,江苏南京210044

出　　处：《热带气象学报》2020年第3期299-306,共8页Journal of Tropical Meteorology

基　　金：国家自然科学基金项目(41675102);国家重点研发计划项目(2017YFC1502102)共同资助。

摘　　要：以漳河流域为研究区域,以CMORPH卫星-地面自动站-雷达三源降水融合数据和ERA5再分析降水资料为WRF-Hydro模式的输入,进行径流模拟,对比分析模拟径流与实测径流的差异,探讨基于两种降水数据的WRF-Hydro模式在漳河流域的径流模拟效果。结果表明:三源降水融合数据的径流模拟效果较优,纳什系数均达到0.7以上,模拟径流与实测径流过程吻合较好;采用三源降水融合数据和ERA5再分析降水资料率定WRF-Hydro模式,以ERA5再分析降水资料为输入,径流模拟结果都不佳;总体而言,三源降水融合数据与WRF-Hydro模式耦合能够较好地模拟漳河流域径流过程。Taking Zhanghe River Basin as the study area, the present study used the high-resolution radarsatellite-gauge merged precipitation products and reanalysis precipitation data from ERA5 as input for the WRF-Hydro model for runoff simulation. To explore the accuracy of runoff simulation in Zhanghe River Basin based on the WRF-Hydro model of two precipitation data, we compared and analyzed the difference between simulated runoff and observation runoff. The results show that the three-source merged precipitation products perform better with the Nash efficiency coefficient above 0.7, and the simulated hydrological process curves agree well with the observed hydrological process curves. With the threesource merged precipitation products and the ERA5 reanalysis data calibrated to the WRF-Hydro model,the simulation results are not satisfying with the ERA5 reanalysis data as input. In general, the threesource merged precipitation products combined with the WRF-Hydro model can better simulate the runoff process in the Zhanghe River Basin.

关 键 词：WRF-Hydro模式 CMORPH卫星-地面自动站-雷达三源降水融合数据 ERA5再分析资料 径流模拟 

分 类 号：P456.7[天文地球—大气科学及气象学]