Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 41330 10.12737/stp-64202011 Results of current research Results of current research Results of current research Impact of meteorological storms on the E-region of the ionosphere in 2017–2018 Impact of meteorological storms on the E-region of the ionosphere in 2017–2018 Борчевкина Ольга Павловна Borchevkina Olga Pavlovna opsuslova@gmail.com

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Карпов Иван Викторович Karpov Ivan Viktorovich ivkarpov@inbox.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Карпов Михаил Иванович Karpov Mikhail Ivanovich mikhailkarpov@hotmail.com Коренькова Нина Алексеевна Korenkova Nina Alekseevna ninakoral@gmail.com Власов Валерий Иванович Vlasov Valery Ivanovich office@wdizmiran.ru Лещенко Владимир Сергеевич Leshchenko Vladimir Sergeevich office@wdizmiran.ru Калининградский филиал Института земного магнетизма, ионосферы и распространения радиоволн им. Н.В. Пушкова РАН Калининград Россия West Department of Pushkov Institute of Terrestrial Mag-netism, Ionosphere and Radio Wave Propagation RAS Kaliningrad Russian Federation Балтийский федеральный университет имени И. Канта Калининград Россия I. Kant Baltic Federal University Kaliningrad Russian Federation Калининградский филиал Института земного магнетизма, ионосферы и распространения радиоволн им. Н.В. Пушкова РАН Калининград Россия West Department of Pushkov Institute of Terrestrial Mag-netism, Ionosphere and Radio Wave Propagation RAS Kaliningrad Russian Federation Балтийский федеральный университет имени И. Канта Калининград Россия I. Kant Baltic Federal University Kaliningrad Russian Federation Калининградский филиал Института земного магнетизма, ионосферы и распространения радиоволн им. Н.В. Пушкова РАН Калининград Россия West Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS Kaliningrad Russian Federation Балтийский федеральный университет им. Иммануила Канта Immanuel Kant Baltic Federal University Калининградский филиал Института земного магнетизма, ионосферы и распространения радиоволн им. Н.В. Пушкова РАН Калининград Россия West Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS Kaliningrad Russian Federation Калининградский филиал Института земного магнетизма, ионосферы и распространения радиоволн им. Н.В. Пушкова РАН Калининград Россия West Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS Kaliningrad Russian Federation Калининградский филиал Института земного магнетизма, ионосферы и распространения радиоволн им. Н.В. Пушкова РАН Калининград Россия West Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS Kaliningrad Russian Federation 6 4 74 79 https://zh-szf.ru/en/nauka/article/41330/view

The paper presents the results of observations of the sporadic Es layer during the period of meteorological disturbances in Kaliningrad in October 2017 and 2018 under quiet geomagnetic conditions. During the meteorological storms (October 29–30, 2017 and October 23–24, 2018), significant changes occurred in the dynamics of the Es-layer critical frequency. Observations of atmospheric and ionospheric disturbances in the Kaliningrad region show that the delay between the ionospheric response and the moment of maximum disturbances in atmospheric parameters is about 3 hours. These phenomena at the heights of the E-region might have been caused by propagation of acoustic-gravity waves generated by convective processes in the lower atmosphere during periods of a meteorological storm. Intensification of turbulent processes in the lower thermosphere leads to an increase in the atmospheric density and, accordingly, to higher recombination rates. This leads to a rapid decrease in the concentration of ions and, consequently, to a decrease in the critical frequency of the sporadic layer below the sensitivity threshold of ionosondes.

The paper presents the results of observations of the sporadic Es layer during the period of meteorological disturbances in Kaliningrad in October 2017 and 2018 under quiet geomagnetic conditions. During the meteorological storms (October 29–30, 2017 and October 23–24, 2018), significant changes occurred in the dynamics of the Es-layer critical frequency. Observations of atmospheric and ionospheric disturbances in the Kaliningrad region show that the delay between the ionospheric response and the moment of maximum disturbances in atmospheric parameters is about 3 hours. These phenomena at the heights of the E-region might have been caused by propagation of acoustic-gravity waves generated by convective processes in the lower atmosphere during periods of a meteorological storm. Intensification of turbulent processes in the lower thermosphere leads to an increase in the atmospheric density and, accordingly, to higher recombination rates. This leads to a rapid decrease in the concentration of ions and, consequently, to a decrease in the critical frequency of the sporadic layer below the sensitivity threshold of ionosondes.

 sporadic E layer acoustic-gravity waves atmosphere-ionosphere coupling meteorological disturbances sporadic E layer acoustic-gravity waves atmosphere-ionosphere coupling meteorological disturbances

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