Abstract A new empirical model of the topside ionospheric density was developed to describe the measured topside profile accurately. This profiler is a composite of two separate layers of different ion species in the topside ionosphere, the O+ layer and the light-ions (H+ and He+) layer. The light-ions layer is characterized by an α-Chapman function with a linearly increasing scale height with altitude. This new model appears to perform the best as compared to five other typical topside profilers in representing data from ISIS-1&2 and Alouette-1&2 observations. We also analyzed the magnetic latitude dependence, seasonal variation, and day–night difference of the characteristic parameters of the light-ions layer during the magnetic quiet (Kp <4) and low solar activity (f107<120 solar flux unit, sfu) period within magnetic latitudes from −60° to 90°. The statistical results show the expected different behaviors of light-ions and O+ parameters. In addition, the portion of the light-ion components contributing to the topside-ionospheric total electron content (TTEC) was studied also. The results suggest that the light ions make a great contribution to the TTEC, especially in magnetic low- and middle-latitudes at night.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    A new topside profiler based on Alouette/ISIS topside sounding


    Beteiligte:
    Zhu, Jie (Autor:in) / Zhao, Biqiang (Autor:in) / Wan, Weixing (Autor:in) / Ning, Baiqi (Autor:in) / Zhang, Shunrong (Autor:in)

    Erschienen in:

    Advances in Space Research ; 56 , 10 ; 2080-2090


    Erscheinungsdatum :

    2015-08-14


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch








    Towards a Better Representation of the IRI Topside Based on ISIS and Alouette Data

    Bilitza, D. / Williamson, R. / International Council of Scientific Unions; Committee on Space Research; Scientific Commission C | British Library Conference Proceedings | 1999