Abstract
Based on the results of satellite measurements using OMI instrumentation (NASA, USA) at 354 nm in 2005-2020 (http://avdc.gsfc.nasa.gov) over nine populated areas in Russia, after the exclusion of cases of the smoke and dust registration in the atmosphere, approximations were obtained for temporal variations in average long-term values of atmospheric aerosol optical depth (AOD) in April to September. The approximations obtained for four most spaced-apart areas made it possible to develop a spatiotemporal model of average long-term AOD in the ultraviolet band for the territory from 43° to 60° N and from 33° to 133° E for a warm season. A verification of the model using data for the other five areas that were not included in the model development and a comparison of the results with AERONET ground data confirmed a fairly good quality of the model. An analysis of the measurement data is indicative of significant negative annual linear trends in the mean April-September AOD for all analyzed areas.
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