Long-term variability of UV radiation in the spectral range of 300–380 nm in Moscow |
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| Authors: | E I Nezval’ N E Chubarova |
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| Institution: | 1.Lomonosov Moscow State University, GSP-1,Leninskie Gory,Moscow,Russia |
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| Abstract: | The seasonal and interannual variability of global ultraviolet (UV) radiation in the spectral range of 300-380 nm (0380) in Moscow in 1968-2014 is analyzed. The effect of cloudiness on the magnitude of 0380 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 0380 from the average (for 1968-1997) due to clouds can reach + (11-12)%. The statistically significant positive linear trend in total annual 0380 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). |
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