AbstractThe results from direct ground-based solar UV irradiance measurements and the total ozone content (TOC) over Stara Zagora (42° 25′N, 25° 37′E), Bulgaria are presented. During the period 1999–2003 the TOC data show seasonal variations, typical for the middle latitudes – maximum in the spring and minimum in the autumn. The comparison between TOC ground-based data and Global Ozone Monitoring Experiment (GOME) satellite-borne ones shows a seasonal dependence of the differences between them.A strong negative relationship between the total ozone and the 305nm wavelength irradiance was found. The dependence between the two variables is significant (r=−0.62±0.18) at 98% confidence level.The direct sun UV doses for some specific biological effects (erythema and eyes) are obtained. The estimation of the radiation amplification factor RAF shows that the ozone reduction by 1% increases the erythemal dose by 2.3%. The eye-damaging doses are more influenced by the TOC changes and in this case RAF=−2.7%.The amount of these biological doses depended on the solar altitude over the horizon. This dependence was not so strong when the total ozone content in the atmosphere was lower.


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    Titel :

    The total ozone and UV solar radiation over Stara Zagora, Bulgaria


    Beteiligte:
    Mendeva, B.D. (Autor:in) / Gogosheva, Ts.N. (Autor:in) / Petkov, B.H. (Autor:in) / Krastev, D.G. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 35 , 8 ; 1366-1368


    Erscheinungsdatum :

    2005-01-16


    Format / Umfang :

    3 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch