Vol. 38, issue 06, article # 12

Abstract:

The quality of atmospheric air in many cities of Siberia is unsatisfactory, which requires research to identify the cause-and-effect relationships between natural factors and the degree of anthropogenic impacts. The article studies long-term air pollution processes in Chita and the influence of calm conditions on them. Linear correlations between the measurements of monthly average concentrations of benzo(a)pyrene at Roshydromet stationary monitoring posts winters 2020/21 and 2023/24 are analyzed. It is shown that the paired measurements at posts, in general, are proportional to each other. The relationships between benz(a)pyrene concentrations and calm conditions are investigated. A dependence of its high concentrations on the frequency of calm periods in winter has been revealed. The established statistical relationships create opportunities for external control of observation results at stationary monitoring posts in the city and for assessing the effectiveness of measures taken to improve the quality of atmospheric air. The derived dependencies also allow numerically filling gaps in observation data and identifying additional emissions from benz(a)pyrene sources.

Keywords:

atmosphere, pollution, benzo(a)pyrene, observation post, monitoring, frequency of calms

Figures:

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