Deep gravity waves in moist-saturated atmospheric air

Abstract

The equations of motion of a moist-saturated, dissipative, stratified atmosphere are used in the case of small Schmidt number to describe the propagation of linearized gravity waves in deep cloudy atmosphere: as in dry air, the consequence of the dissipation is the diffusion and the damping of waves through the medium. However, there exist particular cases of stratification, for which the moisture gives rise at locally undamped waves. This property justifies the existence of oscillatory unstable régimes when we study shallow convection in the medium.