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Parameters of the Ionospheric F2 Layer as a Source of Information on Trends in Thermospheric Dynamics

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Aeronomy of the Earth's Atmosphere and Ionosphere

Part of the book series: IAGA Special Sopron Book Series ((IAGA,volume 2))

Abstract

The problem of determination of trends in thermospheric dynamics parameters (horizontal winds) on the basis of analysis of trends in various combinations of ionospheric F2-layer parameters is formulated. The previous attempts of the author in this direction are briefly described. It is shown that all studied parameters lead to the same result: after the “boundary date” (approximately 1980) a systematic change in these parameters (a long-term trend) is observed, this fact manifesting changes in the dynamical regime of the thermosphere because of cooling and contraction of the entire middle and upper atmosphere. The results of a search for trends in the hmF2 height for the moment (Т(ss) + 2h) are described. These trends are found higher than the hmF2 trends obtained earlier by various authors analyzing the hmF2 behavior at fixed moments of local time.

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Acknowledgments

The work was supported by the Russian Foundation for Basic Research (project No. 07-05-00095).

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Authors and Affiliations

  1. Institute of Applied Geophysics, 129128, Moscow, Russia

    Alexey D. Danilov

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  1. Alexey D. Danilov
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Correspondence to Alexey D. Danilov .

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Editors and Affiliations

  1. Espaciais (INPE), Instituto Nacional de Pesquisas, Av. dos Astronautas 1758, São Jose dos Campos, 12227-010, São Paulo, Brazil

    Mangalathayil Ali Abdu

  2. Geophysical Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev St., Sofia, 1113, Bulgaria

    Dora Pancheva

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Danilov, A.D. (2011). Parameters of the Ionospheric F2 Layer as a Source of Information on Trends in Thermospheric Dynamics. In: Abdu, M., Pancheva, D. (eds) Aeronomy of the Earth's Atmosphere and Ionosphere. IAGA Special Sopron Book Series, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0326-1_31

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