AbstractWe have used the technique of expansion in Empirical Orthogonal Functions (EOFs) to develop regional models of the critical frequencies of E and F2 layers (foE,foF2), peak height (hmF2), and semi-thickness of F2 layer (YmF2) over Pakistan. In the present study levels of solar activity specified by Smoothed Sunspot Number (R) from 10 to 200 are taken into account. The magnetic dip angle for the model ranges from 30° to 60°. We have compared the regional model and the International Reference Ionosphere (IRI) with measurements of three ionosondes in Pakistan. The model parameters foE and foF2 are found overall comparable to the observed hourly median values during daytime at Karachi (geographic latitude=24.95°N, longitude=67.13°E, magnetic inclination=37°), Multan (30.18°N, 71.48°E, 45°) and Islamabad (33.75°N, 73.13°E, 51.5°) during the years 1988, 1996 and 2000. For hmF2 the computed values by regional and IRI model for the year 1995 are found close to each other. However, for YmF2the results are better during daytime as compared to nighttime.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Comparing IRI and a regional model with ionosonde measurements in Pakistan


    Beteiligte:
    Murtaza, G. (Autor:in) / Iqbal, S. (Autor:in) / Ameen, M.A. (Autor:in) / Iqbal, A. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 42 , 4 ; 682-690


    Erscheinungsdatum :

    2008-03-18


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch







    Regional ionosphere specification by assimilating ionosonde data into the SAMI2 model

    Kim, Jeong Heon / Kim, Yong Ha / Ssessanga, Nicholas et al. | Elsevier | 2019


    Regional ionosphere specification by assimilating ionosonde data into the SAMI2 model

    Kim, Jeong Heon / Kim, Yong Ha / Ssessanga, Nicholas et al. | Elsevier | 2019