Ozone variations in the stratosphere due to gravity waves in stratified shear flows

摘要

In a number of experiments on ozone layer investigations the short-term ozone variations with hour or several hours periods at heights 20 - 50 km were observed. We suppose that this phenomenon may originate due to interaction of internal gravity waves with stratified shear flow in the vicinity of critical layer, where the phase velocity of the wave is equal to flow velocity. The amplitude and period of ozone density oscillations are found in the gravity wave of constant amplitude, when the flow pattern near the critical layer is determined by nonlinearity, and viscosity effects are small. We have found that the density variation of passive admixture can be comparable with unperturbed value.