Dynamics of Distribution of Aerosol Fractions in the Surface Air of the Boreal Zone of Western Siberia (Based on Observations at the Fonovaya Observatory)–Part 1: Comparison of the Periods of Summer Vegetation and Winter Dormancy of Woody Plants

We present the results of comparative characterization of fractional composition of surface aerosols in the period of summer vegetation and winter dormancy of woody plants in the boreal zone of Western Siberia. The article presents statistics on the size distribution of aerosol particles at the Fonovaya Observatory of IAO SB RAS (Tomsk Region) from July 1, 2022, to June 30, 2023. The analysis of the ratios of aerosol fractions revealed a paradoxical situation, where the number concentration of aerosol particles 0.3–2.0 μm diameter turned out to be significantly higher in winter than in summer. A phenomenological model is suggested which describes this effect as a manifestation of the action of radiometric forces.