Determination of turbulence parameters from the spectra of vertical wind velocity component measured by a pulsed coherent Doppler lidar. Part II. Experiment at the BEO of the IAO SB RAS
I.N. Smalikho1, V.A. Banakh1, A.M. Sherstobitov1,2, A.V. Falits1
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
2National Research Tomsk State University, Tomsk, Russia
Keywords: coherent Doppler lidar, wind, turbulence
Abstract
In order to test a new method for determining the parameters of wind turbulence from the spectra of the vertical component of the wind speed vector measured by a pulsed coherent Doppler lidar (PCDL), in the summer of 2020 we conducted an experiment on the territory of the Basic Experimental Observatory (BEO) of the IAO SB RAS. A comparative analysis of the estimates of the turbulent energy dissipation rate obtained by two methods: 1) from the spectrum of the vertical component of the wind velocity vector (new method) and 2) from the azimuth structure function of the radial velocity measured by a conically scanning PCDL (previously used method) showed that the new method also gives an unbiased estimate. The results of lidar measurements of wind turbulence parameters in the presence of a low-level jet stream and an internal gravity wave in the atmospheric boundary layer are presented.
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