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Category: Ноябрь 2017

Long-term Variability of UV Radiation in the Spectral Range of 300–380 nm in Moscow

E. I. Nezval’ and N. E. Chubarova

The seasonal and interannual variability of global ultraviolet (UV) radiation in the spectral range of 300–380 nm (Q380) in Moscow in 1968–2014 is analyzed. The effect of cloudiness on the magnitude of Q380 is assessed. The smallest (–22…–26%) losses due to cloudiness are registered in May–August, and the highest ones (to –45%) are observed in October–November. According to the UV radiation reconstruction model and measurement data, the long-term deviations of Q380 from the aver- age (for 1968–1997) due to clouds can reach (11–12)%. The statistically significant positive linear trend in total annual Q380 is revealed from the data of both the reconstruction model and observations (about 1.5% per decade for 1968–2014 and 3% per decade for 1979–2014).