Journal of Atmospheric and Environmental Optics ›› 2017, Vol. 12 ›› Issue (2): 109-113.

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Automatic Observation System for Atmospheric Optical Turbulence in the Near Surface Layer

SUN Zhenyuan1,2, SUN Gang2, LIU Qing2, LI Xuebin2, WENG Ningquan1,2   

  1. (1 School of Environmental Science and Optoelectronic Technologies, University of Science and Technology of China, Hefei 230026, China; 
    2 Key Laboratory of Atmosphere Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences, Hefei 230031, China)
  • Received:2015-10-30 Revised:2016-01-20 Online:2017-03-28 Published:2017-03-23

Abstract:

The automatic observation system of the near surface optical turbulence is composed with CSAT3 three-dimensional sonic anemometer and WXT520 multifunctional weather sensor. Solar power and wireless transmission are used to realize unattended operation, while the conventional meteorological parameters and atmospheric refractive index structure constant Cn2 can be measured simultaneously. It consists of a control center and three sub stations, which can be measured at the same time to three points. The real temperature is obtained from virtual temperature via humidity correction. The atmospheric refractive index structure parameter Cn2 is calculated by using the method of single point temperature fluctuation, and the calculated results are in good agreement with the experimental results. The system can adapt to the complex and harsh environment, the performance is stable and reliable, and the sub station can be extended.

Key words: atmospheric optics, refractive index structure parameter, three-dimensional sonic anemometer, humidity correction

CLC Number: