Аннотация:The results of long-term experiment on twenty-four-hour observations of the atmospheric boundary layer (ABL) parameters with acoustic sounders (sodars) in Moscow during a period from January 1989 till December 1991 are presented. This experiment also included simultaneous sodar observations at three points within the city and suburbs during three months in different seasons. The statistics of the boundary layer parameters as well as the data on their spatial variations over the city are discussed. The data of the first wind measurements in the ABL over the center of the city are presented. The comparison of local concentrations of two pollutants and the parameters measured by sodar (the mixing height and the wind speed) are given.