Abstract
This article deals with the analysis of existing models of smog situation formation over automobile overpasses and in places of substantial congestion of transport in large cities, for example, in Kyiv. A mathematical model consisting of two blocks – dynamic and kinetic, which allows determining the formation of the thermal dome of pollution and the concentration of hydrocarbon emissions in the air, depending on the number of working engines, is proposed. The kinetic block of the model allows determining the level of formaldehyde, as an indicator of the appearance of photochemical smog in conditions of atmospheric constancy. The concentration of emissions from motor vehicles in the air is calculated over the main transport overpasses of the city of Kyiv at their full load (peak hours).
Highlights
The main factors and mechanism of formation of smog in large cities of Ukraine, including over the city of Kyiv, studied to date is not enough
The work aims to reveal the peculiarities of the negative impact on the atmospheric air of motor transport in Kyiv, as a scientific basis for improving the environmental safety management system by estimating and predicting the formation of photochemical smog around overpasses and large intersections
Among the existing models of the formation of photochemical smog over a large city at present, the most common are statistical-hydrodynamic, which are adapted to the conditions of a large city
Summary
The main factors and mechanism of formation of smog in large cities of Ukraine, including over the city of Kyiv, studied to date is not enough. The mechanism of the formation of smog, which was considered in the works of a number of foreign authors, is identical, the indicator of urban photochemical pollution of the atmosphere in each case is chosen different and depends on a number of factors of the area, primarily from the meteorological conditions of the terrain, the type of pollutants. The work aims to reveal the peculiarities of the negative impact on the atmospheric air of motor transport in Kyiv, as a scientific basis for improving the environmental safety management system by estimating and predicting the formation of photochemical smog around overpasses and large intersections
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