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。
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.
出处
《中国沙漠》
CSCD
北大核心
2007年第4期614-620,共7页
Journal of Desert Research
基金
国家自然科学基金项目(40575006)
国家重点基础研究发展规划项目(G1998040906)资助
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
extreme arid desert region
atmospheric thermal boundary layer
super depth
buoyancy flux
wind shear
