Wave transience in a compressible atmosphere. Part I: transient internal wave, mean-flow interaction.

Abstract

Vertically propagating internal waves give rise to mean flow accelerations in an atmosphere due to the effects of wave transience resulting from compressibility and vertical group velocity feedback. Such accelerations appear to culminate in the spontaneous formation and descent of regions of strong mean wind shear. Both analytical and numerical solutions are obtained in an approximate quasi- linear model which describes this effect. -from Author