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Doppler lidar observation of the gravity waves near Lake Baikal in the summer of 2015

In the summer of 2015 for two weeks on the coast of Lake Baikal near Listvyanka we carried out experiments using a coherent Doppler lidar “Stream Line”. Place of the lidar measurements and atmospheric conditions contributed to a relatively frequent occurrence of internal gravity waves (in the form of quasi-harmonic oscillations of the wind vector components) in the atmospheric boundary layer. As a result of our analysis of this experimental data we have detected 6 cases of propagation of the gravity wave with the oscillation period of 6.5 min and 18 min (once) and 9 min (four cases). As a rule, the duration of gravity wave observation was around 45 min, but in one case the duration was approximately 4 hours.