干旱区生态环境知识资源中心(Arid): 塔克拉玛干沙漠荒漠过渡带空气动力学粗糙度分析

Arid

	塔克拉玛干沙漠荒漠过渡带空气动力学粗糙度分析
其他题名	Analysis on Aerodynamic Roughness Length in a Desert Transitional Zone of the Taklimakan Desert
	杨兴华; 艾力·买买提明; 张瑞军; 何清; 霍文
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2012
卷号	29 期号:3 页码:524-528
中文摘要	根据塔克拉玛干沙漠北缘荒漠过渡带哈德、肖塘2个试验点的风、温梯度观测数据，利用风速比法计算了中性大气层结、无风沙运动条件的空气动力学粗糙度(z_0)，并分析探讨z0与下垫面状况、大气稳定度及风速的相互关系。结果表明：哈德、肖塘中性条件下z_0的取值范围分别为1.8110~(-11)~1.2010~(-3)m，1.0010~(-11)~1.6510~(-3)m，平均值为2.7010~(-5)m和6.0510~(-5)m，与平坦沙面的值较为接近；z_0随下垫面性质变化明显；空气动力学粗糙度总体上随着理查逊数(R_i)增大而变大，但又呈现出一定的离散程度；空气动力学粗糙度与2 m高度风速呈显著的负指数关系；大气稳定度对空气动力学粗糙度的影响作用有待于进一步确定。
英文摘要	In this paper,the values of aerodynamic roughness length over the Hade and Xiaotang regions were calculated under the conditions when the atmospheric stability was in a neutral stratification and there was no wind-blown sand movement using the wind speed ratio method based on the data of average wind speed and temperature obtained from 10-m-high towers at Hade and Xiaotang in a desert transitional zone of the Taklimakan desert.The correlations between aerodynamic roughness length and underlaying surface,air stability and wind speed were analyzed and discussed.The results are as follows: The aerodynamic roughness length z0 of neutral stratification was in ranges of 1.8110~(-11)-1.210~(-3) m and 1.0010~(-11)-1.6510~(-3) m,their average values were 2.7010~(-5) m and 6.0510~(-5) m,respectively,and these values were close to those over flat sand surface.The aerodynamic roughness length z_0 changed obviously with the change of underlaying surface features.On the whole,the value of aerodynamic roughness length was increased with the increase of atmospheric stability,while the discrete degree of aerodynamic roughness length was increased.There was a significant negative exponential relation between aerodynamic roughness length and wind speed at 2-m height.Atmospheric stability has a complex influential action on aerodynamic roughness length,which needs to be further studied.
中文关键词	荒漠过渡带 ; 大气 ; 稳定性 ; 空气动力学 ; 粗糙度 ; 风速 ; 塔克拉玛干沙漠
英文关键词	desert transitional zone atmospheric stability aerodynamic roughness length wind Taklimakan Desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4536259
来源机构	中国气象局乌鲁木齐沙漠气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228043
作者单位	中国气象局乌鲁木齐沙漠气象研究所, 乌鲁木齐, 新疆 830002, 中国
推荐引用方式 GB/T 7714	杨兴华,艾力·买买提明,张瑞军,等. 塔克拉玛干沙漠荒漠过渡带空气动力学粗糙度分析[J]. 中国气象局乌鲁木齐沙漠气象研究所,2012,29(3):524-528.
APA	杨兴华,艾力·买买提明,张瑞军,何清,&霍文.(2012).塔克拉玛干沙漠荒漠过渡带空气动力学粗糙度分析.干旱区研究,29(3),524-528.
MLA	杨兴华,et al."塔克拉玛干沙漠荒漠过渡带空气动力学粗糙度分析".干旱区研究 29.3(2012):524-528.