| 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。 |
| 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 |
| DOI：10.16032/j.issn.1004-4965.2020.028 |
| 分类号: |
| 基金项目: |
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| APPLICATION OF WRF-HYDRO FOR RUNOFF SIMULATION BASED ON DIFFERENT RAINFALL PRODUCTS: TAKING ZHANGHE RIVER BASIN AS AN EXAMPLE |
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GAO Yu-fang,WU Yu-qing,PENG Tao,GU Tian-wei
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1.School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China;2.Institute of Heavy Rain, CMA/ Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Wuhan 430205, China;3.School of Atmoshpheric Science, Nanjing University of information Science & Technology, Nanjing210044, China
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| Abstract: |
| Taking Zhanghe River Basin as the study area, the present study used the high-resolution radar-satellite-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 three-source 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 three-source merged precipitation products combined with the WRF-Hydro model can better simulate the runoff process in the Zhanghe River Basin. |
| Key words: WRF-Hydro model the high-resolution radar-satellite-gauge merged precipitation products ERA5 reanalysis data runoff simulation |
