Gravity waves, excited in general by vertical displacement of air (e.g. orographic, frontal or convective lifting), can propagate in a stably stratified atmosphere and interact with the ambient flow. When travelling through the tropopause region, characterised by strong gradients in various atmospheric quantities, such as stability, wind shear and trace gases, the waves’ properties often change drastically.
Within this work, the EULAG model is used to provide an idealized set-up for sensitivity studies. Tropospheric and stratospheric wave spectra extracted for flows under varying tropopause sharpness are analysed, respectively. Possible effects of changing wind shear on reflection and breaking of the wave are discussed as

Keywords: Geophysical flows, Applied fluid dynamics