Abstract The paper discusses the problems arising when establishing average electron density profiles in the valley height range. Validity of the set of formulas established in the past is critically discussed. It is shown that variations of the ionospheric EF valley profile are preceding in time to similar local geomagnetic variations when the solar activity effects are removed using 27-day running mean values at sunrise during solar minimum. Routine data obtained at 6 ionospheric stations over many years are used to establish statistics of occasions when electron density profiles could not be computed due to missing or aberrant data. Different criteria of ionosphere disturbances are applied at different latitudes. Synthesis of missing data in monthly tables of ionospheric characteristics is considered as a way to complete the data base for modeling purposes.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Incomplete information problem at ionospheric modelling with vertical-incidence sounding data


    Contributors:

    Published in:

    Publication date :

    1991-01-01


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    New Possibilities for the Vertical-Incidence Ionospheric Sounding Method

    Ratovsky, K. G. / International Council of Scientific Unions | British Library Conference Proceedings | 2001


    Improving network stations for oblique incidence sounding of ionospheric radio wave propagation

    Arshba, U.P / Gavrikov, A.L / Kurmishev, N.V et al. | Elsevier | 1988



    Transionospheric sounding as a final link in the information system for ionospheric radio sounding

    Avdyushin, S.I. / Danilkin, N.P. / Ivanov, I.I. et al. | Elsevier | 1988