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Simulative Study of Water-Heat Process in the Tibetan Plateau (Ⅲ):Evaporation, Short-wave Radiation and Net Radition
Pages: 645-648
Year: Issue:  5
Journal: JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY

Keyword:  寒区土壤温度观测模拟;
Abstract: 模拟青藏高原土壤水分和热量迁移过程的连续变化对于全球变化研究具有非常重要的意义,其准确模拟是提高陆面过程模拟精度的重要条件.利用大尺度水文模型中对冻土中水分和能量平衡过程的描述,对沱沱河站点土壤湿度进行了步长为1 h,总时间为399 d的连续模拟.与观测资料及前人研究成果的比较表明,VIC-3L模型中对草甸的蒸发量计算较为合理,与乌鲁木齐河流域实测的草甸蒸发量取得了相当的一致;在冬季,模拟的短波辐射与观测的较为接近,在夏季,模拟值较观测值偏小;模拟计算获得的年辐射平衡值与前人的研究成果相近.
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