应用大口径闪烁仪测量近地表横向风速的研究

大气与环境光学学报 ›› 2012, Vol. ›› Issue (5): 333-337.

应用大口径闪烁仪测量近地表横向风速的研究

田勇志1,2，刘建国1，陆亦怀1，桂华侨1

(1 中国科学院安徽光学精密机械研究所中国科学院环境光学与技术重点实验室，安徽合肥 230031;
2 中国科学院研究生院，北京100049 )

收稿日期:2012-03-26 修回日期:2012-05-02 发布日期:2012-10-21
通讯作者: 田勇志（1983-），男，湖北宜昌人，博士研究生，从事环境生态光学监测研究。 E-mail:yztian@aiofm.ac.cn
作者简介:田勇志（1983-），男，湖北宜昌人，博士研究生，从事环境生态光学监测研究。
基金资助:
国家自然科学基金（60908035）、中国科学院知识创新工程重要方向项目（KZCX2-YW-411）资助

Remote Sensing of Crosswind speed by a Scintillometer in Boundary Layer

TIAN Yong-zhi1,2, LIU Jian-guo1,LU Yi-huai1,Gui Hua-qiao1

(1 Key Laboratory of Environmental Optical and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Science, Hefei 20031,China;
2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China)

Received:2012-03-26 Revised:2012-05-02 Online:2012-10-21

摘要/Abstract

摘要：

研究了两种光闪烁法测量近地表风速的方法，给出横向风速的计算公式。根据计算方法，在330 m的距离上进行风速反演实验，与超声风速计测量结果对比表明，两种反演方法都能准确可靠地获取区域横向风速，但在大气稳定度过渡期，斜率法精度更高。测量平均时间越长，结果一致性越好。结果表明，在一个较大区域里，大口径闪烁仪能同时给出显热和横向风速，可以很好地应用于边界层物质交换评价。

关键词: 大口径闪烁仪, 横向风速, 峰值法, 斜率法

Abstract:

Two optical scintillation methods of measuring the crosswind speed were investigated in the boundary layer. Then, the calculation formulas of wind measurements were. The experiment was carried out at 330 m optical path. Finally the measurements were compared to the results of the sonic anemometer. The results showed two optical scintillation methods were both suitable to determine the windspeed, but the slope technique was more reliable than the peak technique at the time during sunrise and sunset transitions. It was also found that better results can be obtained with the longer time-average. The results demonstrated that a large aperture scintillometer can be used to measure both sensible heat flux and crosswind, so it would be widely applied in evaluation of mass exchange in the atmosphere.

Key words: large aperture scintillometer, crosswind speed, peak technique, slope technique

中图分类号:

P427.1

田勇志刘建国陆亦怀桂华侨. 应用大口径闪烁仪测量近地表横向风速的研究[J]. 大气与环境光学学报, 2012, (5): 333-337.

TIAN Yong-Zhi, LIU Jian-Guo, LU Yi-Fu, GUI Hua-Qiao. Remote Sensing of Crosswind speed by a Scintillometer in Boundary Layer[J]. Journal of Atmospheric and Environmental Optics, 2012, (5): 333-337.

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