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Spatiotemporal dynamics of the wind velocity variance from the data of acoustic sounding of the atmospheric boundary layer
Authors
O. F. Kapegesheva
Nikolay P. Krasnenko
Luidmila G. Shamanaeva
M. V. Tarasenkov
Publication date
1 January 2015
Publisher
'SPIE-Intl Soc Optical Eng'
Doi
Cite
Abstract
In the report spatiotemporal dynamics of the variance of three components of the wind velocity in the atmospheric boundary layer retrieved from measurements with a Doppler mini-sodar is analyzed. During measurements, the variances of the x- and y-components of the wind velocity were in the range 0.001 ≤ Dx, Dy ≤ 10 m2/s2; for the z-component 0.001 ≤ Dz ≤ 1.2 m2/s2. Their increase in the morning hours (at about 11:00, local time) and in the evening hours (from 18:00 till 22:00, local time) was noticed. This was explained by warming and subsequent cooling of the Earth surface accompanied by strengthening of motion of air masses. At night (from 00:00 till 5:00, local time), 0.01 ≤ Dz ≤ 0.56 m2/s2, which is in good agreement with the literature data. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only
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info:doi/10.1117%2F12.2205801
Last time updated on 03/08/2021
Tomsk State University Repository
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vtls:000578141
Last time updated on 26/02/2020