Model study of the influence of atmospheric waves on variations of upper atmosphere and ionosphere parameters during a meteorological storm on May 29, 2017.

We performed a series of numerical experiments to study the changes in atmospheric and ionospheric parameters caused by the propagation and dissipation of atmospheric waves from the meteorological source in the troposphere under various geomagnetic conditions. The simulation was carried out using the high-resolution regional atmospheric model AtmoSym and the Global Self-consistent Model of the Thermosphere, Ionosphere and Protonosphere (GSM TIP). Acoustic and internal gravity waves from a meteorological source were included in the large-scale model by additional source to the heat balance equation without using parameterization. A multi-model investigation showed that the propagation of waves from the troposphere leads to: a local heating of the thermosphere and a decrease in n[O]/n[N 2 ] ratio over the wave generation region; the formation of a dipole-like spatial structure of TEC disturbances with positive and negative values in the vicinity of the source of atmospheric waves. It is shown that the most important mechanism determining the dipole-like spatial structure of TEC disturbances under the influence of atmospheric waves is disturbances of the meridional component of the thermospheric wind. Thermospheric disturbances associated with geomagnetic activity have insignificant effect on the TEC response to the propagation and dissipation of atmospheric waves from the meteorological source in the troposphere. [ABSTRACT FROM AUTHOR]