Abstract
The spatiotemporal distribution of concentrations of trace gases (SO2, NOx, and CO) in the atmospheric surface layer over different areas of the Baikal natural territory is analyzed using the data from seven continuous monitoring stations for 2019-2021. The most contaminated area is the zone of atmospheric influence in the western and northwestern directions from the lake (the cities of Irkutsk, Angarsk, Usol’e-Sibirskoe, Cheremkhovo). The purest area is the central zone of the Baikal natural territory. Changes in atmospheric concentrations of pollutants due to wildfires and measures taken during the COVID-19 pandemic are shown.
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