VARIABILITY OF THE MESOPAUSE TEMPERATURE DURING THE PERIODS OF SEASONAL TRANSITION OF ATMOSPHERIC CIRCULATION

The work presents the results of a study of the atmospheric temperature in the mesopause region, determined by measuring the characteristics of hydroxyl emission, during the spring and fall transition of the middle atmosphere circulation in 2012-2018. It was revealed, that in spring the largest temperature variability is observed before the transition data. In the fall period, in most cases, increased variability of the mesopause temperature is observed after the transition data. A possible reason of the revealed effects may be disturbances in the dynamics of the middle atmosphere, and intensification of wave activity during periods of seasonal (spring/fall) transition of atmospheric circulation.