Abstract
The study deals with the assessment of spatio-temporal dynamics of atmospheric pollution caused by emissions from road traffic flows. Nitrogen dioxide concentrations were calculated in the atmospheric air near Udmurtskaya street of the city of Izhevsk. The work was based on a mathematical model created for the calculation of emissions and their dispersion taking into account the dynamics of traffic flows, wind conditions. As the initial data, we used video recordings from continuous automatic recording of the traffic flow intensity. When calculating the emission of pollutants, we applied the model presented in the Methodology for Determining Emissions of Pollutants into the Atmospheric Air from Mobile Sources for Performing Summary Calculations of Atmospheric Air Pollution (approved by Order of the Ministry of Natural Resources of the Russian Federation No. 804 of November 27, 2019). To build a scattering calculation model, we used Methods for Calculating Dispersion of Emissions of Harmful (Polluting) Substances in the Atmospheric Air (approved by Order of the Ministry of Natural Resources of the Russian Federation No. 273 of June 6, 2017). To automate the process of calculating the scattering of impurities in the atmospheric air, a program code was created using the Go programming language. The data obtained by means of the implementation of the program code were visualized in the form of a dynamic map of the concentration distribution posted on the website https://komfortsreda.udsu.ru/ in the section Izhevsk/Atmospheric air/Dynamics of NO2 concentrations. This study deals with a new promising direction in the assessment of natural environments – assessment performed through online modeling. Emission dispersion modeling and assessment of the current state of atmospheric air are important as contributing to the general characterization of the ecological state of an urban area.
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