| 西北地区戈壁局地陆面物理参数的研究 |
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| 引用本文： | 张强,王胜,卫国安.西北地区戈壁局地陆面物理参数的研究[J].地球物理学报,2003,46(5):616-623. |
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| 作者姓名： | 张强 王胜 卫国安 |
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| 作者单位： | 1.中国气象局兰州干旱气象研究所，兰州 730020 2 中国科学院寒区旱区环境与工程研究所，兰州 730000 |
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| 基金项目： | 国家自然科学基金项目 (4 0 175 0 0 4)，国家重点基础研究发展规划项目 (G19980 40 90 4 2 ) |
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| 摘 要： | 采用2000年8月～2001年9月在敦煌戈壁上观测的陆面过程资料，分析了敦煌地区荒漠戈壁地表反照率与太阳高度角和土壤湿度的关系以及土壤热传导率与土壤湿度的关系，初步给出了具有试验基础的戈壁局地反照率和土壤热传导率的多因子参数化公式. 并通过与观测值的比较发现试验资料拟合的参数化公式能够比较好地反映降水等气候因子引起的动态变化.
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| 关 键 词： | 戈壁 地表反照率 土壤热传导率 土壤湿度 太阳高度角 |
| 文章编号： | 0001-5733(2003)05-0616-08 |
| 收稿时间： | 2002-8-6 |
| 修稿时间： | 2003-3-27 |
A STUDY ON PARAMETERIZATION OF LOCAL LAND-SURFACE PHYSICAL PROCESSES ON THE GOBI OF NORTHWEST CHINA |
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| ZHANG QIANG.A STUDY ON PARAMETERIZATION OF LOCAL LAND-SURFACE PHYSICAL PROCESSES ON THE GOBI OF NORTHWEST CHINA[J].Chinese Journal of Geophysics,2003,46(5):616-623. |
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| Authors: | ZHANG QIANG |
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| Institution: | 1.Lanzhou Institute of Arid Meteorology, China Meteorological Administration,Lanzhou 730020,China 2 Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000,China |
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| Abstract: | By utilizing the observational data of land-surface processes obtained during about one year from Aug. 2000 to Sep. 2001, the relationship of surface albedo over the gobi of the Dunhuang region with solar altitude angles and soil moisture as well as the relationship of soil heat conductivity with soil moisture are analyzed. Preliminarily a multiple factorial parameterization formulae of surface albedo and soil thermal conductivity based on long-term experiments are put forward. By comparison with observed values, it is found that the parameterization formulae fitted by using observational data can reflect the dynamic changes induced by some climatic factors such as precipitation well. |
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| Keywords: | Arid regions Surface albedo Soil heat conductivity Soil moisture Solar altitude angle |
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