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7 December 2022 Generation of kinetic energy of the pulsating component of the wind speed in the atmospheric boundary layer
P. G. Kovadlo, A. A. Lezhenin
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Proceedings Volume 12341, 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 123415Q (2022) https://doi.org/10.1117/12.2644558
Event: 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2022, Tomsk, Russia
Abstract
The paper presents the results of studies of atmospheric turbulence in the lower part of the atmospheric boundary layer. At different heights of the atmosphere (8, 121, 301 m), the energetic loses of air flow for the generation of turbulent kinetic energy are calculated for different linear scales. It is shown that on small scales the consumption of mean kinetic energy to energy of turbulence reaches 32% in winter (at 8 m) and 34% (at 301 m) in summer. The paper also uses the WRF model, for the first time in Russia, to determine secondary atmospheric parameters (characteristics of optical turbulence). The vertical profiles of the outer scale of turbulence and the structural constant of fluctuations of the refractive index of air at the Sayan Solar Observatory were determined in case of small seeing. Estimated averaged vertical profile of C2N (z) at the Sayan solar observatory site corresponds to the Fried parameter = 12.1 cm in the atmospheric layer 100 m - 30 km at light wavelength = 500nm (from 15/07/2015 to 23/07/2015).
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P. G. Kovadlo and A. A. Lezhenin "Generation of kinetic energy of the pulsating component of the wind speed in the atmospheric boundary layer", Proc. SPIE 12341, 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 123415Q (7 December 2022); https://doi.org/10.1117/12.2644558
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KEYWORDS
Optical turbulence
Turbulence
Atmospheric modeling
Observatories
Atmospheric optics
Refractive index
Meteorology
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