Sound propagation in the atmosphere above the ground surface
In this paper we present the results of investigations on the influence of the atmospheric channel on the sound propagation above the ground surface. We describe the algorithms for calculating the sound pressure level and the software package «Prognoz», which is intended for real-time estimation of the mean field of the sound pressure level from a remote sound source in the ground atmospheric layer. The software package considers the characteristics of the sound source, vertical profiles of the main meteorological parameters, the characteristics of the underlying surface, and the parameters of the atmospheric turbulence. The results of numerical estimation and field tests of this software package for distances from an acoustic source up to 6 km are also given in the paper.