Journal of Atmospheric and Environmental Optics ›› 2012, Vol. 7 ›› Issue (1): 6-12.

• 论文 • Previous Articles     Next Articles

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 Online:2012-01-25 Published:2011-12-27

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

CLC Number: