Sound Speed Propagation in the Atmosphere of

Abstract

At the atmosphere of Baghdad airport, the sound speed propagation has been calculated at midday and midnight times for two months, January and April, 1994. Weather records such as air temperature, dew-point temperature, air pressure and relative humidity were came from Baghdad station are used to carried out this work. The results show that at warm and dry atmospheres the sound speed propagation is large, while it is low at cold and moist atmospheres.