Inhomogeneous pollution by particulate matter of the atmospheric surface layer of the Oktyabrsky district of the city of Krasnoyarsk in 2019

Abstract

Using the air monitoring system of the Krasnoyarsk Scientific Center of the SB RAS, the nature of the atmospheric surface layer pollution by particulate matter (PM2.5) in the Oktyabrsky district of the millionth industrial city was studied. The average annual and seasonal concentrations of PM2.5 were determined in the area where six air monitoring stations are located. Statistical analysis showed that the distribution of PM2.5 in the air is uneven in the Oktyabrsky district of Krasnoyarsk. In the summer air pollution was caused by the smoke of large-scale forest fires in the northeastern regions of Siberia.

Concentration of PM2.5 in the surface atmosphere of the Yenisei riverbed section (within the city of Krasnoyarsk) in the winter period of 2022-2023

“…Previously, it was shown that the pollution of the surface atmosphere with suspended solid particles up to 2.5 μm in size (PM2.5) across the territory of Krasnoyarsk occurs unevenly [7,10]. These studies did not assess the concentration of PM2.5 in the air of the ice-free Yenisei River.…”

“…Numerous studies have established that these dependences are statistically significant [4][5][6]. On the scale of cities and megalopolises, the spatial pollution of the surface atmosphere is heterogeneous [7,8]. The uneven distribution of emission sources and the influence of meteorological conditions lead to very different concentrations of air pollutants, including PM, in different areas of the city [9].…”