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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2018, Vol. 15, No. 7, pp. 236-248

Spatial variability of aerosol optical thickness on the territory of Moscow and Moscow Region by satellite and ground based data

E.Yu. Zhdanova 1 , N.Ye. Chubarova 1 
1 Lomonosov Moscow State University, Moscow, Russia
Accepted: 15.10.2018
DOI: 10.21046/2070-7401-2018-15-7-236-248
Spatial variability of aerosol optical thickness (AOT) is estimated based on satellite data of the state-of-the-art VIIRS radiometer on the territory of Moscow and Moscow Region. The VIIRS radiometer is the latest generation sensor on board the polar-orbiting satellite Suomi National Polar-orbiting Partnership (Suomi NPP). It is shown that higher satellite retrieval AOT are observed in the center of the city in comparison with suburb territory. But reliability of the determined difference in AOT between suburb territory and the city center is not high enough due to uncertainties of satellite algorithms in evaluation of surface reflectance. It is also revealed that AOT retrieval VIIRS algorithm has additional uncertainties connected with the choice of aerosol model for Moscow region. Methodology of satellite AOT correction according to ground based measurements of CIMEL solar photometer (AERONET) at Meteorological Observatory of Moscow State University is proposed. Based on the obtained corrected AOT, spatial distribution of UV radiation is estimated taking into account distribution of AOT on the territory of Moscow and Moscow Region. Spatial variations of UV indexes for the considered case study exceed 15 % and reach 1 UV index due to inhomogeneity of aerosol distribution.
Keywords: aerosol, aerosol optical thickness, Moscow, satellite retrievals, VIIRS, MODIS
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