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Proceedings Paper

Irregular variations of ground-level ultraviolet radiation
Author(s): Alexander V. Mikhalev; Marina A. Chernigovskaya; Anton Yu. Shalin
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Paper Abstract

We present and analyze the data of daily observations of ground-level near-noon ultraviolet (UV) radiation of the Sun in the wavelength range 295 - 345 nm at Irkutsk (East Siberia, 52 degree(s)N, 104 degree(s)E) for 1998 - 2000. The study revealed an asymmetry of the seasonal variation of UV radiation with respect to the summer solstice, and its dependence on the wavelength in the spectral range under consideration. Irregular variations of ground-level UV radiation, typical of the region, were identified, which depend on the season, and on the selected spectral range. The detected features of the irregular variations are interpreted in terms of the existence of a pronounced annual variation in total ozone content, the variation (during different seasons) of the proportion of the contribution to the attenuation of UV radiation from the Rayleigh and aerosol scattering, the absorption by ozone, and of the specific climatic weather regime in East Siberia.

Paper Details

Date Published: 28 February 2002
PDF: 6 pages
Proc. SPIE 4678, Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, (28 February 2002); doi: 10.1117/12.458505
Show Author Affiliations
Alexander V. Mikhalev, Institute of Solar-Terrestrial Physics (Russia)
Marina A. Chernigovskaya, Institute of Solar-Terrestrial Physics (Russia)
Anton Yu. Shalin, Institute of Solar-Terrestrial Physics (Russia)

Published in SPIE Proceedings Vol. 4678:
Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Gelii A. Zherebtsov; Gennadii G. Matvienko; Viktor A. Banakh; Vladimir V. Koshelev, Editor(s)

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