Abstract In this paper, we present the spatial variations of O(1D) airglow observed by the ISUAL (Imager of Sprites and Upper Atmospheric Lightning) instrument on board the FORMOSAT-2 satellite. With a CCD camera and a 630nm filter, ISUAL can measure global atmospheric emissions lying between the heights of 80 and 300km. In days of 3–6 September 2008 and 25–27 February 2009, ISUAL has measured the emissions of O(1D) airglow with results showing strong longitudinal peak-3 and peak-4 structures. The Lomb-Scargle analyses for these two cases show periods of longitudes of 120° and 90° supporting the DE2 and DE3 non-migrating tides. The 630nm emissions are enhanced in equatorial regions and are lying along the equator. Over Africa its intensity can sometimes increase up to 80% relative to other longitudes. The perturbation is so strong that non-migrating tides are erased. A case of bimodal distribution with strong emissions at latitudes in equator and mid-latitude in geographic coordinates was observed.


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    Titel :

    Observations of non-migrating tides and ionospheric perturbations of O(1D) airglow by ISUAL instrument


    Beteiligte:
    Nee, Jan B. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 54 , 3 ; 409-416


    Erscheinungsdatum :

    2013-01-01


    Format / Umfang :

    8 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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