Dustiness and Aerodynamics of Air in Central Asian Cities

Abstract

One of the adverse meteorological factors for the cities of Central Asia are dust storms and haze. The average annual number of days with haze in the cities of Central Asia reaches from 10 to 20 days. Among them, the “Afghan” wind stands out. ( garmessel - fiery, hot, dry wind ), suddenly begins dusty storm in the deserts Afghanistan. It causes significant damage to the health of the population and the economies of Central Asian countries. The article describes the characteristics of the origin of dust and the process of dust transfer of wind. Research has shown that the process of transporting natural dust begins with the movement of particles with a diameter of 100–500 microns. The main types of occurrence and distribution of dust in cities are identified. The main results of field observations on measuring the content of fine dust were carried out in the atmospheric air of the urban environment. The paper also applied computer simulation technologies that can significantly simplify the analysis of dust and wind conditions. The analysis of urban greening is presented. The practical implementation of the proposed methods creates a real opportunity to improve the quality indicators of the atmospheric air of cities with a complex landscape location in the summer, which will directly affect the improvement of people’s health.