Models for environmental monitoring of the territory in the presence of concentrated sources of pollutant emissions

¹ Federal Research Centre the Southern Scientific Centre of the Russian Academy of Sciences, 41, Chehova str., Rostov-on-Don, 344006, Russia
² Kuban State University, 149, Stavropolskaya str., Krasnodar, 350040, Russia

^* Corresponding author: pavlova@math.kubsu.ru

Abstract

We consider models of the convection-diffusion-reaction for a substance emitted into the atmosphere by a concentrated source (stationary or moving) taking into account its decomposition into atmospheric components and gravitational sedimentation. We consider atmospheric characteristics (wind and diffusion) to be given. For example, we can take average climatic values of diffusion coefficients and air mass velocity according to the wind rose. The problem is solved in a bounded area with a known initial distribution of the impurity. One or another type of boundary conditions is selected in accordance with the content of the problem under study. If the source is an object moving at a certain speed, the problem is reduced to a series of problems with a stationary source. We use discrete approximations and a computational algorithm based on the splitting method, calculations are carried out for model territories and problem parameters. We can use the proposed models for environmental monitoring of regions and conducting environmental assessments of existing sources of pollutant emissions.