Changes in the middle and upper atmosphere parameters during the January 2013 sudden stratospheric warming

Abstract
<p>We present the results of complex obser-vationsof various parameters of the middle and upper atmosphere over Siberia in December 2012 \textendashJanuary 2013, during a major sudden stratospheric warming (SSW) event. We analyze variations in ozone concentra-tion from microwave measurements, in stratosphere and lower mesosphere temperatures from lidar and satellite measurements, in the F2-layer critical frequency (foF2), in the total electron content (TEC), as well as in the ra-tio of concentrations of atomic oxygen to molecular nitrogen (O/N2) in the thermosphere.To interpret the observed disturbances in the upper atmosphere, the ex-perimental measurements are compared with the results of model calculations obtained with the Global Self-Consistent Model of Thermosphere\textemdashIonosphere\textemdashProtonosphere (GSM TIP). The response of the upper atmosphere to the SSW event is shown to be a decreasein foF2 and TEC during the evolution of the warming event and a prolonged increase in O/N2, foF2, and TEC after the SSW maximum. For the first time, we observe the relation between the increase in stratospheric ozone, thermospheric O/N2, and ionospheric electron densityfor a fairly long time (up to 20 days) after the SSW maximum at midlatitudes.</p>
Year of Publication
2018
Journal
Solnechno-Zemnaya Fizika
Volume
4
Number of Pages
62-75
Date Published
08/2018
ISSN Number
2412-4737
URL
http://naukaru.ru/en/nauka/issue/1428/viewhttp://naukaru.ru/en/nauka/article/22544/view
DOI
10.12737/issue_5c1b83b913d443.7589563310.12737/szf-44201807