The paper discusses the results of remote acoustic sensing aimed at retrieving the wind velocity profiles in the lower troposphere performed on the southwestern shore of Lake Baikal. Measurements were conducted since June 26 until July 16 of 2001. Peculiarities of the flow structure in various situations are considered. Wind direction histograms (wind roses) at different heights, including the surface layer, are presented. Characteristic directions of mean flows are revealed for the whole period of measurements and for the daytime and nighttime periods separately.