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30 November 2017 Dynamics of the standard deviations of three wind velocity components from the data of acoustic sounding
N. P. Krasnenko, O. F. Kapegesheva, L. G. Shamanaeva
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Proceedings Volume 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 104662S (2017) https://doi.org/10.1117/12.2285528
Event: XXIII International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2017, Irkutsk, Russian Federation
Abstract
Spatiotemporal dynamics of the standard deviations of three wind velocity components measured with a mini-sodar in the atmospheric boundary layer is analyzed. During the day on September 16 and at night on September 12 values of the standard deviation changed for the x- and y-components from 0.5 to 4 m/s, and for the z-component from 0.2 to 1.2 m/s. An analysis of the vertical profiles of the standard deviations of three wind velocity components for a 6-day measurement period has shown that the increase of σx and σy with altitude is well described by a power law dependence with exponent changing from 0.22 to 1.3 depending on the time of day, and σz depends linearly on the altitude. The approximation constants have been found and their errors have been estimated. The established physical regularities and the approximation constants allow the spatiotemporal dynamics of the standard deviation of three wind velocity components in the atmospheric boundary layer to be described and can be recommended for application in ABL models.
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N. P. Krasnenko, O. F. Kapegesheva, and L. G. Shamanaeva "Dynamics of the standard deviations of three wind velocity components from the data of acoustic sounding", Proc. SPIE 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 104662S (30 November 2017); https://doi.org/10.1117/12.2285528
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KEYWORDS
Acoustics
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