AbstractThe radio wave absorption in the lower ionosphere measured in Central and Southern Europe is used to study long-term changes in the characteristics of planetary waves in the period range of 2–15 days. Such fluctuations in absorption were proved to be of non-solar origin /7/. No consistent pattern is found in variations of the dominant period of planetary waves with T = 2–15 days. Amplitudes in fixed period bands do not exhibit a trend in Central Europe but they show an evident positive trend (20–25% increase over 1980–1989) in Southern Europe. The results indicate a possibility of long-term trends in some characteristics of planetary waves at 80–100 km altitudes.


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    Titel :

    Changes in characteristics of planetary waves at 80–100 km over Central and Southern Europe since 1980


    Beteiligte:
    Laštovička, J. (Autor:in) / Pancheva, D. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.01.1991


    Format / Umfang :

    4 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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