文档介绍：Solar aspects of papers
Behaviour of Surface Solar Ultraviolet Irradiation and Ozone over Stara Zagora, Bulgaria, 1999 - 2003
Gogosheva Ts.* , **,**, **
*Institute of Astronomy, Bulgarian Academy of Sciences
** Solar Terrestrial Influences Laboratory, Bulgarian Academy of Sciences
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Abstract. Direct ground-based UV measurements and the total ozone content (TOC) over Stara Zagora (42° 25’ N, 25° 37’ E), Bulgaria are presented. For the time period 1999 – 2003 the TOC data show seasonal variations, typical for the middle latitudes – maximum in the spring and minimum in the autumn. parison of these TOC ground-based data to TOC satellite-borne data from the Global Ozone Monitoring Experiment (GOME) shows a seasonal dependence of the differences between the ground-based and satellite data.
Clear negative relationship is recognized between the total ozone and the irradiance of the wavelength 305 nm. The opposition of the two variables is significant (r = - ± ) 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 %. The eye-damaging doses are more influenced by the TOC changes and in this case RAF= -2,7%.
Introduction
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