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Open AccessArticle

Strong Interrelation between the Short-Term Variability in the Ionosphere, Upper Mesosphere, and Winter Polar Stratosphere

1
Institute of Solar-Terrestrial Physics SB RAS (ISTP SB RAS), 126a Lermontov st., 664033 Irkutsk, Russia
2
Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS, 31 Lenin Ave., 677980 Yakutsk, Russia
*
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(10), 1588; https://doi.org/10.3390/rs12101588
Received: 15 April 2020 / Revised: 14 May 2020 / Accepted: 14 May 2020 / Published: 16 May 2020
(This article belongs to the Section Atmosphere Remote Sensing)
We perform a joint analysis of short-period (up to several hours) variability in parameters of the ionosphere, the mesosphere, and the stratosphere at mid-latitude, subauroral, and high-latitude points for a long time interval. The study is based on the ionospheric total electron content (TEC) measurements and data on the OH rotational temperature at the mesopause height. We reveal similar seasonal variations in the dynamics of the short-term variability level, both in the ionosphere and the mesosphere. Maximum variability is observed during winter months and it exceeds the values in summer period up to 5–6 times. The revealed dynamics has no explicit relation to the levels of geomagnetic and solar activities. We suggest that the instabilities in the high-velocity stratospheric subauroral winter jet stream may be a source of the recorded variability seasonal variations in the ionosphere and the mesosphere. We propose a new index to estimate a short-term variability in the stratosphere. The index is shown to experience similar regular seasonal variations with a maximum during winter months. We show a clear correlation between the mesosphere/ionosphere variability indices values and the stratosphere disturbance index. The correlation is shown to be higher for the mesosphere variability index as compared with that in the ionosphere, and at the high-latitude point located closer to the jet stream. The obtained results indicate a strong interrelation between the short-period variability in the ionosphere, in the upper mesosphere, and in the subauroral stratosphere. The results contribute to elucidating the basic mechanisms for a vertical coupling between different atmospheric layers. View Full-Text
Keywords: stratosphere; mesosphere; mesopause; temperature; ionosphere; atmospheric-ionospheric coupling; wave disturbances; TEC; GPS stratosphere; mesosphere; mesopause; temperature; ionosphere; atmospheric-ionospheric coupling; wave disturbances; TEC; GPS
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MDPI and ACS Style

Yasyukevich, A.; Medvedeva, I.; Sivtseva, V.; Chernigovskaya, M.; Ammosov, P.; Gavrilyeva, G. Strong Interrelation between the Short-Term Variability in the Ionosphere, Upper Mesosphere, and Winter Polar Stratosphere. Remote Sens. 2020, 12, 1588.

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