IMPACT OF WINTER SUDDEN STRATOSPHERIC WARMINGS ON THE VARIABILITY OF PARAMETERS OF THE UPPER NEUTRAL ATMOSPHERE AND IONOSPHERE

Abstract

We present the results of studying the atmospheric temperature variability in the mesopause region and the NmF2 peak electron density during the winter sudden stratospheric warmings (SSWs) of different types in January 2013, February–March 2016, and February 2018. The analysis is based on the experimental data obtained from the complex of instruments of the Institute of Solar-Terrestrial Physics of Siberian Branch of Russian Academy of Sciences. To study the SSW effects, we used the method of complex analysis of atmospheric and ionospheric variability, which makes it possible to evaluate the manifestation of atmospheric wave activity in a wide range of altitudes of the upper atmosphere. It was found, that during the all analyzed SSWs, an increase in atmospheric and ionospheric variability was observed. Significant differences in the manifestation of wave activity at the heights of the mesopause and the ionospheric F2 region during SSWs of various types were also found.