ИСТИНА

Abstract: Main goal of this research is determination of spatial and temporal variability of erythemal UV radiation over the territory of Moscow region due to variability of different geophysical factors. Because of rare UV radiation measurement network, a suitable approach for UV radiation retrievals consists of two steps. First of all, spatial variability of factors influencing UV radiation needs to be determined. Secondly, UV radiation is calculated based on spatial distribution of obtained parameters. For this purpose spatial and temporal variability of such parameters as total ozone content, cloud UV transmittance, and aerosol optical thickness were investigated over the territory of Moscow region. Spatial and temporal variability of main geophysical parameters that determine doses of UV radiation on the Earth's surface was defined using satellite data. We used OMI satellite data for retrieval total ozone content. Retrievals of aerosol optical thickness were carried out according to the data of modern sensor VIIRS onboard polar-orbiting satellite Suomi National Polar-orbiting Partnership (Suomi NPP) and also using data from AERONET stations. An algorithm of computing cloud UV transmission based on operational data of SEVIRI sensor onboard geostationary satellite METEOSAT was developed. The proposed algorithm is implemented in the prototype of operative monitoring webservice (http://uv-moscow.com) and will be subsequently used to retrieve spatial distribution of UV radiation over the territory of Moscow region. Acknoledgments: This work was supported by Russian Science Foundation, research project No. 17-77-10132.