| 极端干旱荒漠地区大气热力边界层厚度研究 |
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| 引用本文： | 张强.极端干旱荒漠地区大气热力边界层厚度研究[J].中国沙漠,2007,27(4):614-620. |
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| 作者姓名： | 张强 |
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| 作者单位： | 中国气象局兰州干旱气象研究所/甘肃省(中国气象局)干旱气候变化与减灾重点（开放）实验室,甘肃 兰州, 730020 |
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| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划) |
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| 摘 要： | 通过对以往一些野外观测事实分析,发现在极端干旱荒漠区的晴天热力大气边界层厚度远远超出了以往在其他地区发现的热力大气边界层厚度,由此提出了荒漠地区超常厚度大气热力边界层现象。并且,讨论了控制大气热力边界层形成和发展的主要物理因素,还对极端干旱荒漠地区这种超常厚度大气热力边界层现象进行了理论分析和解释,初步认为地表白天强烈加热和夜间快速冷却是极端干旱荒漠区出现超常厚度大气热力边界层的最根本原因。
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| 关 键 词： | 极端干旱荒漠区 大气热力边界层 超常厚度 浮力通量 风切变 |
| 文章编号： | 1000-694X（2007）04-0614-07 |
| 收稿时间： | 2006-02-10 |
| 修稿时间： | 2006-02-102006-05-27 |
Study on Depth of Atmospheric Thermal Boundary Layer in Extreme Arid Desert Regions |
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| ZHANG Qiang.Study on Depth of Atmospheric Thermal Boundary Layer in Extreme Arid Desert Regions[J].Journal of Desert Research,2007,27(4):614-620. |
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| Authors: | ZHANG Qiang |
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| Institution: | Gansu Province & China Meteorological Administration Key Laboratory of Arid Climatic Changes and Disaster Reduction; Lanzhou Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China |
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| Abstract: | In this paper, by analyzing some set of the field observational data, it is found that the depth of the atmospheric thermal boundary layer in extreme arid desert region exceed that in other regions much, and therefore the issue of the supper depth of the atmospheric thermal boundary layer in extreme arid desert region is brought forward. Then, the key physical factors that are controlling the formation and development of atmospheric thermal boundary layer are discussed, and the issue of the supper depth of the atmospheric thermal boundary layer in extreme arid desert region is theoretically analyzed and explained. Finally, it is primarily cognized that the strongly heating during day and rapidly cooling at night on ground are the essential reasons that the supper depth of the atmospheric thermal boundary layer occurs in extreme arid desert region. |
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| Keywords: | extreme arid desert region atmospheric thermal boundary layer super depth buoyancy flux wind shear |
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