Statistical Characteristics of Monthly Mean and Annual Concentrations of Particulate Matter PM2.5 and PM10 in Three Points of Tbilisi in 2017-2022

Abstract

Results of the detailed statistical analysis of the average monthly and annual concentrations of particulate matter PM2.5 and PM10 at three locations in Tbilisi (Kazbegi av., Tsereteli av. and Varketili) in 2017-2022 are presented. An analysis of the correlations between the indicated characteristics of air pollution has been carried out. The variability of the average annual values of PM2.5 and PM10 in the study period of observations was studied. In particular, it was found that in 2020-2021 there was a significant decrease in the average annual concentration of aerosols due to restrictions on the movement of vehicles associated with the covid-19 pandemic. It is noted that for the entire observation period, the average annual concentration of PM2.5 and PM10 was above the permissible norm.