ANALYSIS OF THE ATMOSPHERIC AIR QUALITY OVER THE SOFIA – EAST THERMAL POWER PLANT

There are many sources of urban air pollution: transport, domestic heating, agriculture and industry (thermal power plants and others). Without an analysis of the relative share of each source, its weight in pollution cannot be calculated with certainty. In October 2019, Sofia was the dirtiest city in the world for 4 successive days. Thermal power plants in Sofia contributed largely therein. To study the processes of dispersion of aerosol impurities in the atmosphere, an ever increasing number of large-scale and in-depth experimental studies of these processes have been organised in recent decades. Correlation dependences between the spatial and temporal distribution of aerosol and major meteorological parameters, such as atmospheric stability, wind direction and speed, air humidity, and the presence of temperature inversions, are sought. The aim of this work is to study the distribution of particulate matter and its connection with meteorological data in the atmosphere above a thermal power plant in the city of Sofia.