Conditions of the propagation of internal gravity waves through wind structures from the troposphere to the ionosphere

Abstract

We consider the propagation of large-scale internal gravity waves (IGWs) from the troposphere through vertically inhomogeneous wind structures to the ionosphere heights on the basis of an analysis of beam trajectories. We selected different versions of the initial parameters and numerically studied the specific peculiarities of the behavior of beam trajectories related to the location of layers with horizontal and vertical reflection and a critical layer on the pathway of the waves. It was shown that, for sufficiently large-scale IGWs, their propagation from the troposphere to ionosphere heights is possible. We found the characteristic times when the waves generated in the troposphere reach ionosphere heights. We revealed strong variations in these times when the initial parameters of the problem changed. We determined the typical values of the horizontal displacement (relative to the generation source) of the wave packets when they reach the ionosphere.