AbstractIonospheric hourly monthly-median values of the F2-layer critical frequency, foF2, from six European stations are correlated with the corresponding 12-month running mean values of each of the six solar indices, the Zurich sunspot number R, the solar radio noise flux at 10.7 cm F, the ionospheric index of solar activity IF2, the index IG, the Australian T index and the Russian RS ionospheric index, using various models. The statistical analysis shows that there is no difference in the degree of correlation in using one index over another. Their statistical behaviour is virtually identical. Furthermore, it is shown that there is a slight degree of favourability for a quadratic relation between foF2 and any index of solar activity.


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    Title :

    Variation of foF2 with solar activity


    Contributors:

    Published in:

    Publication date :

    1994-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Variation of foF2 with Solar Activity

    Kouris, S.S. | Online Contents | 1994


    Appendix C - Variations of foF2 with Solar Activity

    Kouris, S.S. | Online Contents | 1994


    Appendix C — Variations of foF2 with solar activity

    Kouris, S.S. / Nissopoulos, J.K. | Elsevier | 1994



    Dependence of foF2 Long-Term Changes on Solar Activity and Longitude

    Garbatsevich, A. V. / Deminov, M. G. / Deminov, R. G. et al. | British Library Conference Proceedings | 2001