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Changes with Time in the Relation between the Critical Frequency and Height of the F2 Layerстатья
- Авторы: Danilov A.D., Konstantinova A.V., Berbeneva N.A.
- Журнал: Geomagnetism and Aeronomy
- Том: 64
- Номер: 5
- Год издания: 2024
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 653
- Последняя страница: 662
- Аннотация: The change with time in parameter S, which characterizes the relation of the critical frequency foF2to the height hmF2 of the ionospheric F2 layer is considered. The results of measurements by the verticalsounding method at two stations (Moscow and Juliusruh) are analyzed. The dependence of foF2 on hmF2 isplotted for three intervals: 1957–1980, 1996–2023, and 2011–2023. Five near-noon LT moments and twoseasons (winter (January and February) and summer (June and July)) are considered. It is found for both stations and both seasons that the S value has been increasing systematically from the earlier to later periods. Atthe same time, the winter S values are approximately by a factor of 3 higher than the summer ones for all periods. It is suggested that the found changes in parameter S could provide valuable information on long-termvariations (trends) in thermospheric parameters with the help of current theoretical models of the TIEGCMor WACCM-X type.
- Добавил в систему: Бербенева Наталия Алексеевна