The study of wave motions in the atmosphere, in particular, atmospheric solar tides is considered in this research. Using the middle and upper atmosphere model (MUAM) data, the latitudinal-high cross-sections of the amplitude and phase of individual tidal components, as well as their temporal variability, were shown. The most suitable periods for the complex Morlet wavelet transform of data were specified for the further use. The results obtained were used to study nonlinear interactions both between atmospheric tides and the mean flow and with each other.