Irregular variations of ground-level ultraviolet radiation

Alexander V. Mikhalev; Marina A. Chernigovskaya; Anton Yu. Shalin

doi:10.1117/12.458505

28 February 2002 Irregular variations of ground-level ultraviolet radiation

Alexander V. Mikhalev, Marina A. Chernigovskaya, Anton Yu. Shalin

Proceedings Volume 4678, Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; (2002) https://doi.org/10.1117/12.458505
Event: Eighth Joint International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2001, Irkutsk, Russian Federation

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.

Citation Download Citation

Alexander V. Mikhalev, Marina A. Chernigovskaya, and Anton Yu. Shalin "Irregular variations of ground-level ultraviolet radiation", Proc. SPIE 4678, Eighth International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, (28 February 2002); https://doi.org/10.1117/12.458505

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