TY JOUR TI Numerical Modeling of the Impact of Natural Tropical Oscillations on the Amplitudes of Atmospheric Tides During Sudden Stratospheric Warming KW Atmospheric dynamics KW atmospheric tides KW tropical oscillations KW sudden stratospheric warming JO Russian Journal of Earth Sciences AU Koval', A.V. AU Vargin, P.N. AU Gavrilov, N.M. AU Didenko, K.A. AU Ermakova, T.S. AU Efimov, M.M. AU Sokolov, A.V. PY 2025 IS 25 PB Geophysical Center of the Russian Academy of Sciences