An evaluation of soil moisture from AMSR-E over source area of the Yellow River, China

查看全文 作　　者：TangTang [1,2]Zhang;Mekonnen [2]Gebremichael;Akash [2]Koppa;XianHong [1,3]Meng;Qun [4]Du;Jun [5]Wen

机构地区：[1]Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China;[2]Department of Civil and Environmental Engineering,University of California,Los Angeles,California 90095-1593,USA;[3]Zoige Wetland and Ecosystem Research Station,NIEER,Zoige,Sichuan 624500,China;[4]State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China;[5]College of Atmospheric Sciences,Chengdu University of Information Technology,Chengdu,Sichuan 610225,China

出　　处：《Research in Cold and Arid Regions》索引2019年第11卷第6期,共9页

基　　金：supported in part by the Programs of National Natural Science Foundation of China (41675157, 91537212) 摘　　要：In this study,in-situ soil moisture measurements are used to evaluate the accuracy of three AMSR-E soil moisture prod ucts from NASA(National Aeronautics and Space Administration),JAXA(Japanese Aerospace Exploration Agency)and VUA(Vrije University Amsterdam and NASA)over Maqu County,Source Area of the Yellow River(SAYR),China.Re sults show that the VUA soil moisture product performs the best among the three AMSR-E soil moisture products in the study area,with a minimum RMSE(root mean square error)of 0.08(0.10)m3/m3 and smallest absolute error of 0.07(0.08)m3/m3 at the grassland area with ascending(descending)data.Therefore,the VUA soil moisture product is used to describe the spatial variation of soil moisture during the 2010 growing season over SAYR.The VUA soil moisture product shows that soil moisture presents a declining trend from east south(0.42 m3/m3)to west north(0.23 m3/m3),with good agreement with a general precipitation distribution.The center of SAYR presents extreme wetness(0.60 m3/m3)dur ing the whole study period,especially in July,while the head of SAYR presents a high level soil moisture(0.23 m3/m3)in July,August and September. 关键词：AMSR-E soil moisture products soil moisture ground measurements source area of the Yellow River

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An evaluation of soil moisture from AMSR-E over source area of the Yellow River, China

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