非均一地形近地层风速廓线特点及粗糙度的研究

郭凤霞; 朱文越; 饶瑞中

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DOI:10.7519/j.issn.1000-0526.2010.6.014

气象:2010,36(6):90-94

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非均一地形近地层风速廓线特点及粗糙度的研究

郭凤霞^1,2, 朱文越¹, 饶瑞中¹

(1.中国科学院安徽光学精密机械研究所大气成分与光学重点实验室，合肥 230031;2.中国科学院研究生院，北京 100081)

Study on the Feature of Surface Layer Wind Velocity Profile and the Roughness over Non Homogeneous Landform

GUO Fengxia^1,2, ZHU Wenyue¹, RAO Ruizhong¹

(1.Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031;2.Graduate University of Chinese Academy of Sciences, Beijing 100081)

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投稿时间：2009-07-25 修订日期：2009-11-27

中文摘要: 在中性大气层结条件下，利用35 m铁塔上五层不同高度处的有效风速，分析得到了非均一地形近地面层风速廓线特点及由粗糙元所决定的粗糙度。结果表明： (1）近地面层风速廓线一般符合对数风速廓线模式，其相关系数均大于0.985，标准偏差为0.04左右； (2）粗糙度的值为1.25 m。但由于外界流体运动状态改变可引起粗糙度出现起伏，其变化范围较大，一般在0.038～4.903 m，与风速之间的相关系数为-0.953。

中文关键词: 风速廓线, 大气稳定度, 中性层结

Abstract:The feature of surface layer wind velocity profile and the roughness length determined by the roughness units over non homogeneous landform are analyzed by using five level effective wind velocities measured by the 35 m tower measuring system in a neutral stratification atmosphere. The result indicated that: (1) The surface layer wind profile is in logarithmic distribution, with correlation coefficients greater than 0.985, and standard deviations about 0.04. (2) The roughness length is 1.25 m, but it will vary between 0.038-4.903 m when the condition of external fluid changes, which has a negative correlation with wind velocity perfectly, with a correlation coefficient -0.953.

keywords: wind velocity profile, atmospheric stability, neutral stratification atmosphere

文章编号： 中图分类号： 文献标志码：

基金项目:国家自然科学基金(10704071)资助项目

作者	单位
郭凤霞	中国科学院安徽光学精密机械研究所大气成分与光学重点实验室，合肥 230031 中国科学院研究生院，北京 100081
朱文越	中国科学院安徽光学精密机械研究所大气成分与光学重点实验室，合肥 230031
饶瑞中	中国科学院安徽光学精密机械研究所大气成分与光学重点实验室，合肥 230031

Author Name	Affiliation
GUO Fengxia	Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031 Graduate University of Chinese Academy of Sciences, Beijing 100081
ZHU Wenyue	Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031
RAO Ruizhong	Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031

引用文本：
郭凤霞,朱文越,饶瑞中,2010.非均一地形近地层风速廓线特点及粗糙度的研究[J].气象,36(6):90-94.
GUO Fengxia,ZHU Wenyue,RAO Ruizhong,2010.Study on the Feature of Surface Layer Wind Velocity Profile and the Roughness over Non Homogeneous Landform[J].Meteor Mon,36(6):90-94.