SOME QUANTITATIVE CHARACTERISTICS OF TRANSFORMATION OF POLLUTANT SUBSTANCES IN CRAMPED AERODYNAMIC CONDITIONS OF THE URBAN ATMOSPHERE
A state of the art in mathematical modeling in one of the fields of atmospheric chemistry is considered. Within the framework of the model proposed in this paper, a joint transformation of a number of typical pollutants of the urban atmosphere in cramped aerodynamic conditions was investigated. This is a street canyon between buildings, which is regarded as a huge room with a certain amount of air exchange. The obtained stiff system of seventeen differential equations describing the kinetics of the process is solved by the Rosenbrock method under various initial conditions corresponding to the concentrations of com- pounds from the joint effect of emissions from various sources. It is shown that a significant increase in the con- tent of a highly toxic secondary contaminant - ozone - is achieved in a short time interval comparable to the time of its transfer from the reaction zone. A quantitative contribu- tion of primary pollutants to this effect is analyzed in de- tail.