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《Journal of Glaciology and Geocryology》 2005-01
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Simulative Study of Water-Heat Process in the Tibetan Plateau (II):Soil Temperature

ZHANG Shi-qiang~(1), DING Yong-jian~(1), LU Jian~(2), LIU Shi-yin~(1) (1.Cold and Arid Regions Environment and Engineering Research Institute ,Chinese Academy of Sciences, Lanzhou Gansu 730000, China;2.School of Remote Sensing and Information Engineering,Wuhan University, Wuhan Hubei 430079, China)  
Water-heat process in the Tibetan Plateau is significant to global climate change. Variances of soil moisture and soil temperature are the key factors of simulating water heat process. In this paper, a water and energy balance macroscale hydrological model is used to compare the simulated result with observed data on the step of 1 hour during 399 days in Tuotuohe. The simulated soil temperature was discussed. The simulated soil temperatures in 11 depths (0 m, 0.2 m, 0.4 m, 0.6 m, 0.8 m, 1 m, 1.3 m, 1.6 m, 2 m, 2.3 m and 2.71 m) were tested. The NSE (Nash-Sufciffe Evaluation) at depths of 0 m, 0.2 m, 0.4 m, 0.6 m, 0.8 m, 1 m, 1.3 m and 1.6 m are greater than 0.9, at depth of 2 m is 0.882, at depth of 2.31 m is 0.7299, and at depth of 2.7 m is 0.369, which indicates that the model is stable in yearly scale and can simulate for a long period in the Tibetan Plateau. The NSE at 2.3 m and 2.71 m is not well either by using damping algorithm or by using constant algorithm, which indicates that the model needs to modify in the future, especially, the energy equation at the bottom of soil.
【Fund】: 中国科学院知识创新工程重大项目(KZCX1 10 06);; 国家自然科学基金项目(40301010)资助
【CateGory Index】: S152.7
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