Abstract
The results of back-trajectory analysis of nine-year (2013–2021) measurements of organic (OC) and elemental (EC) aerosol carbon concentrations made at the atmospheric monitoring station near St. Petersburg (Peterhof, 59.88° N, 29.83° E) are presented. The spatial location of sources was estimated by the concentration weighted trajectory method (CWT) in the geographic area 16°–44° E × 48°–68° N. The obtained data allow us to identify the territories with the strongest organic and elemental carbon emissions and to estimate the seasonal variability of these emissions. In particular, the obtained estimates show that the most intense sources of organic and elemental aerosol carbon in the studied region are located in the Volga-Oka interfluve and on the adjacent territories. It is demonstrated that linear regression coefficients between CWT function values for organic and elemental carbon differ for different regions and seasons and may indicate the prevailing type of sources of carbon-containing aerosol particles.
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