Lidar investigation of wind turbulence on the coastal zone of Lake Baikal at presence of a low-level jet in the atmosphere

Igor N. Smalikho; Viktor A. Banakh; Andrey V. Falits

doi:10.1117/12.2504481

13 December 2018 Lidar investigation of wind turbulence on the coastal zone of Lake Baikal at presence of a low-level jet in the atmosphere

Igor N. Smalikho, Viktor A. Banakh, Andrey V. Falits

Author Affiliations +

Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 108335A (2018) https://doi.org/10.1117/12.2504481
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation

Abstract

To study the peculiarities of wind turbulence in the presence of a low-level jet (LLJ) in the atmospheric boundary layer, we used the raw data measured by a Stream Line coherent Doppler lidar on the coast of Lake Baikal in the summer of 2015. From these data, the height and time distributions of the of turbulent energy dissipation rate, the variance of wind speed and the integral scale of turbulence were reconstructed. For the first time from lidar measurements, quantitative estimates of the dissipation rate and the integral scale of turbulence inside the LLJ were obtained with a sufficiently high accuracy. An excess of the dissipation rate by 1-2 orders in the lower part of the LLJ above the corresponding value in the upper part of the LLJ is revealed. In the center of the jet stream, the integral scale of turbulence is of the order of 100 m, which is 2-3 times less than the effective thickness of the LLJ.

Citation Download Citation

Igor N. Smalikho, Viktor A. Banakh, and Andrey V. Falits "Lidar investigation of wind turbulence on the coastal zone of Lake Baikal at presence of a low-level jet in the atmosphere", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 108335A (13 December 2018); https://doi.org/10.1117/12.2504481

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