TY CONF TI VARIABILITY OF THE MESOPAUSE TEMPERATURE DURING THE PERIODS OF SEASONAL TRANSITION OF ATMOSPHERIC CIRCULATION KW atmosphere KW circulation KW mesopause JO The XXXI International Symposium "Atmospheric and Ocean Optics. Atmospheric Physics" AU Medvedeva, I.V. PY 2025 PB V.E. Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences