大气与环境光学学报 ›› 2012, Vol. 7 ›› Issue (1): 6-12.

• 大气光学 • 上一篇    下一篇

三维超声风速仪测量近地面湍流谱及Cn2的初步研究

朱行听1,2,吴晓庆1,李多扬1   

  1. 1 中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室,安徽,合肥 230031; 2 中国科学院研究生院, 北京 100039
  • 收稿日期:2011-04-25 修回日期:2011-09-04 出版日期:2012-01-25 发布日期:2011-12-27
  • 作者简介:朱行听(1986-),男,安徽宿州,主要研究方向大气参数测量及模式研究。Jannszhu@mail.ustc.edu.cn
  • 基金资助:

    科技部基础性工作专项课题(073D2g1391)

Characteristics of ASL Turbulence Spectra and Cn2 using three-dimensional ultrasonic anemometer

ZHU Xing-ting,WU Xiao-qing,LI Duo-Yang   

  1. 1 Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; 2 Graduate University of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2011-04-25 Revised:2011-09-04 Published:2012-01-25 Online:2011-12-27

摘要:

采用2011年1月在合肥地区复杂下垫面上使用超声风速计测得的风速三分量和温度分湍流实验观测数据,计算分析了合肥地区冬季的不同稳定度条件下的湍流谱特征。并和其他实验进行对比,得到了湍流特征量在不同稳定度下能量谱的曲线拟合公式以及谱峰的位置变化情况,温度谱尾部上翘的现象。另外,比对了超声风速计和温度脉动仪(即单点和双点温度测量法)测得Cn2,发现二者符合较好。

关键词: 湍流, 功率谱, 超声风速计, 折射率结构常数

Abstract:

Velocity components and temperature data are measured using 50 Hz three-dimensional ultrasonic anemometer during January 2011. Characteristics of the turbulence spectra are calculated and analyzed under different stability over Hefei area. Comparing with other experiment results, curve fitting formulae, diverse instance of the power spectra peak position and tail raising of temperature spectra were obtained. And, two different refractive index structure parameter Cn2 were measured and compared by hot wire anemometer and sonic anemometer(double-point and one-point method) above a uniform ground. The results obtained by two methods agree well.

Key words: turbulence, Spectra , three-dimensional ultrasonic anemometer, Cn2

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