A New Version of Parametrization of Orographic Waves: Dynamic and Thermal Effects in the SOCOL3 Model

Orographic gravity waves (OGW) have a significant impact on the global atmospheric circulation, providing the transfer of energy and momentum within the atmospheric layers from the surface to the lower thermosphere. Most modern numerical models of the global climate, due to the specifics of the problems being solved, are not able to resolve the atmospheric wave of the meso- and lower scale on their spatial grid. Therefore, various parameterization schemes for wave effects are developed to take into account the impact of OGW. This study is devoted to a detailed description of the new version of the OGW parameterization created on the basis of solving the wave energy balance equation taking into account the Earth rotation. The new version of the parameterization was implemented into the chemistry-climate model SOCOL3 and numerical experiments were carried out using both the previous and the new versions of the parameterization. It is shown, in particular, that the new version of the OGW parameterization allows for more detailed calculation of wave accelerations and heat inflows, especially in the lower stratosphere, while the OGWs propagate to greater heights of the thermosphere than in the previous parameterization, which better corresponds to observations. As a result, this allows us to obtain more realistic profiles of the mean wind and temperature calculated by the model SOCOL3 with the new parameterization, and the possibilities for fine-tuning the new parameterization provide a significant expansion of a range of scenarios for numerical experiments.