Lidar studies of wind turbulence anisotropy in a stable atmospheric boundary layer

Igor N. Smalikho; Viktor A. Banakh; Andrey V. Falits; Artem M. Sherstobitov

doi:10.1117/12.2541281

18 December 2019 Lidar studies of wind turbulence anisotropy in a stable atmospheric boundary layer

Igor N. Smalikho, Viktor A. Banakh, Andrey V. Falits, Artem M. Sherstobitov

Proceedings Volume 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 112085X (2019) https://doi.org/10.1117/12.2541281
Event: XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2019, Novosibirsk, Russian Federation

Abstract

To determine the degree of anisotropy of wind turbulence from measurements by a Stream Line lidar during the experiment, we used a conical scanning by the probing beam, alternately setting the elevation angle of 35.3° and 60° after each scan. An experiment with such measurement geometry was carried out by us at the Basic Experimental Station of the IOA SB RAS in July 2018. Analysis of the measurement results at night in the presence of a low-level jet (LLJ) in the atmosphere showed that the variance (integral scale) of the horizontal component of the wind speed is 2.26 (3.4) times larger than the variance (integral scale) of the vertical component. In the central part of the LLJ, the integral scales of the horizontal and vertical components of wind speed are on average equal to 183 m and 54 m, respectively.

Citation Download Citation

Igor N. Smalikho, Viktor A. Banakh, Andrey V. Falits, and Artem M. Sherstobitov "Lidar studies of wind turbulence anisotropy in a stable atmospheric boundary layer", Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 112085X (18 December 2019); https://doi.org/10.1117/12.2541281

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