| 黄土高原定西地区陆面物理量变化规律研究 |
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| 引用本文： | 张强,孙昭萱,王胜.黄土高原定西地区陆面物理量变化规律研究[J].地球物理学报,2011,54(7):1727-1737. |
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| 作者姓名： | 张强 孙昭萱 王胜 |
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| 作者单位： | 1. 中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室, 中国气象局气候变化与减灾重点开放实验室,兰州 730020;
2. 甘肃省气象局,兰州 730020;
3. 中国气象局成都高原气象研究所,成都 610072 |
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| 基金项目： | 国家自然科学基金重点项目,国家公益性行业科研专项项目 |
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| 摘 要： | 本文利用在黄土高原定西地区长期观测的陆面物理量资料,在分析了土壤温度和湿度等基本特征的基础上,比较系统地研究了陆面辐射分量、能量分量、地表反照率和Bowen比等陆面土要物理量的变化特征,讨论了陆面能量不平衡差额的分布规律,发现黄土高原定西地区陆面物理量特征与其他地医很不同,揭示出的土壤温度日波动向深层的传播规律和8～9...
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| 关 键 词： | 黄土高原 定西地区 陆面辐射收支 陆向能量平衡 Bowen比 |
| 收稿时间： | 2010-04-28 |
Analysis of variation regularity of land-surface physical quantities over Dingxi Region of the Loess Plateau |
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| ZHANG Qiang,SUN Zhao Xuan,WANG Sheng.Analysis of variation regularity of land-surface physical quantities over Dingxi Region of the Loess Plateau[J].Chinese Journal of Geophysics,2011,54(7):1727-1737. |
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| Authors: | ZHANG Qiang SUN Zhao Xuan WANG Sheng |
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| Institution: | 1. Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, Key Open Laboratory of Arid Change and Disaster of China Meteorological Administration (CMA), Institute of Arid Meteorology, CMA, Lanzhou 730020, China;
2. Gansu Meteorological Administration, Lanzhou 730020, China;
3. Institute of Plateau Meteorology, CMA, Chengdu 610072, China |
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| Abstract: | By using the long-term integrated data of a variety of land-surface physical quantities observed over the Loess Plateau, based on analyzing the basic characteristics of soil temperature and soil moisture, the variation characteristics of main land-surface physical quantities of land-surface radiation components, land-surface energy components, surface albedo and Bowen ratio are systematically analyzed. The distribution of margin of land-surface energy unbalance is discussed. It is found that the characteristics of the land-surface physical quantities over the Loess Plateau are more different than in other regions. Especially the downward propagation of daily soil temperature, "wet layer" at 30 cm below the soil surface, asymmetrical "V"-type daily variation structure of surface albedo, bimodal distribution of sensible heat flux, the different phase of energy balance components and large margin of land-surface energy unbalance are all the new understanding of characteristics of land-surface physical quantities. |
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| Keywords: | Loess Plateau Dingxi Region Land-surface radiation components Land-surface energy balance Bowen ratio |
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