运用分布式水文模型评估TRMM卫星降雨数据对渭河流域水文模拟的适用性（英文）

编号 zgly0001584693

文献类型 期刊论文

文献题名 运用分布式水文模型评估TRMM卫星降雨数据对渭河流域水文模拟的适用性（英文）

作者 赵海根  杨胜天  王志伟  周旭  罗娅  吴琳娜 

作者单位 StateKeyLaboratoryofRemoteSensingScience  JointlySponsoredbyBeijingNormalUniversityandtheInstituteofRemoteSensingApplicationsofChineseAcademyofSciences  ResearchCenterforRemoteSensingandGIS  BeijingKeyLaboratoryforRemoteSen 

母体文献 Journal of Geographical Sciences 

年卷期 2015年02期

年份 2015 

分类号 P333 

关键词 rainfall  TRMM  distributedhydrologicalmodel  DTVGM  hydrologicalsimulation  WeiheRivercatchment 

文摘内容 The objective of this study is to quantitatively evaluate Tropical Rainfall Measuring Mission(TRMM) data with rain gauge data and further to use this TRMM data to drive a Distributed Time-Variant Gain Model(DTVGM) to perform hydrological simulations in the semi-humid Weihe River catchment in China.Before the simulations,a comparison with a10-year(2001-2010)daily rain gauge data set reveals that,at daily time step,TRMM rainfall data are better at capturing rain occurrence and mean values than rainfall extremes.On a monthly time scale,good linear relationships between TRMM and rain gauge rainfall data are found,with determination coefficients R~2 varying between 0.78 and 0.89 for the individual stations.Subsequent simulation results of seven years(2001-2007)of data on daily hydrological processes confirm that the DTVGM when calibrated by rain gauge data performs better than when calibrated by TRMM data,but the performance of the simulation driven by TRMM data is better than that driven by gauge data on a monthly time scale.The results thus suggest that TRMM rainfall data are more suitable for monthly streamflow simulation in the study area,and that,when the effects of recalibration and the results for water balance components are also taken into account,the TRMM 3B42-V7 product has the potential to perform well in similar basins.