| A model for assessing effects of climate change on runoff in China |
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| 作者姓名： | SU Fengge XIE Zhenghui |
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| 作者单位： | LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China,LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| 基金项目： | Supported by the National Key Planning Development Project for Basic Research (Grant Nos. G1998040905 and 2001CB309404), the National Natural Science Foundation of China (Grant Nos. 40275023 and 40145020), and the Hundred Talents Program of the Chinese Academy of Sciences |
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| 摘 要： | A model is established for assessing the effects of climate change on runoff in China based on the land surface parameterization scheme variable infiltration capacity (VIC). The entire area of China is represented by 2604 cells with a resolution of 60 km×60 km for each cell. Forcing data, soil and vegetation parameters needed by the VIC model for the entire area of China are prepared. Daily forcing data, which are obtained from 740 stations between 1980 and 1990, are interpolated to the 60 km×60 km grid system. The VIC model is run on every grid cell over the whole China, and a routing scheme is run offline with daily input of surface runoff and drainage from the VIC to get hydrograph at basin outlets. The spatial patterns of simulated runoff and mean annual precipitation are consistent very well. The results of monthly streamflow simulations over the Huaihe and Weihe River basins indicate that there is a good agreement between the observed and simulated values, and also initially indicate the rationality and feasibility of the evaluation model.
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| 关 键 词： | land surface parameterization scheme runoff evaluation model |
A model for assessing effects of climate change on runoff in China |
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| SU Fengge,XIE Zhenghui.A model for assessing effects of climate change on runoff in China[J].Progress in Natural Science,2003,13(9):701-707. |
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| Authors: | SU Fengge XIE Zhenghui |
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| Institution: | LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | A model is established for assessing the effects of climate change on runoff in China based on the land surface parameterization scheme variable infiltration capacity (VIC). The entire area of China is represented by 2604 cells with a resolution of 60 km×60 km for each cell. Forcing data, soil and vegetation parameters needed by the VIC model for the entire area of China are prepared. Daily forcing data, which are obtained from 740 stations between 1980 and 1990, are interpolated to the 60 km×60 km grid system. The VIC model is run on every grid cell over the whole China, and a routing scheme is run offline with daily input of surface runoff and drainage from the VIC to get hydrograph at basin outlets. The spatial patterns of simulated runoff and mean annual precipitation are consistent very well. The results of monthly streamflow simulations over the Huaihe and Weihe River basins indicate that there is a good agreement between the observed and simulated values, and also initially indicate the rationality and feasibility of the evaluation model. |
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| Keywords: | land surface parameterization scheme runoff evaluation model |
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