Abstract
We present the results of studying year-to-year changes in the variabilities of the mesopause temperature and the peak electron density from the observational data of the complex of instruments of the Institute of Solar-Terrestrial Physics SB RAS in 2008-2020. The analysis involved data on solar and geomagnetic activity, as well as on variations in the Southern Oscillation Index (SOI). We revealed a correlation between the day-to-day variability of the mesopause temperature and SOI variations, with a peak in the La Niña phase and a minimum in the El Niño phase. An analysis of the ionospheric variability and their comparison with changes in geomagnetic and solar activity revealed, that only day-to-day ionospheric variability correlates unambiguously with geomagnetic activity.
Published Version
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