Study the Recurrence of the Dominant Pollutants in the Formation of AQI Status over the City of Sofia for the Period 2013–2020

Abstract

AbstractRecently it became possible to acquire and adapt the most up-to-date models of local atmospheric dynamics - WRF, transport and transformation of air pollutants - CMAQ, and the emission model SMOKE. This gave the opportunity to conduct extensive studies of the atmospheric composition climate of the country on fully competitive modern level. Ensemble, sufficiently exhaustive and representative to make reliable conclusions for atmospheric composition - typical and extreme situations with their specific space and temporal variability was created by using of computer simulations. On this basis statistically significant ensemble of corresponding Air Quality indices (AQI) was calculated, and their climate - typical repeatability, space and temporal variability for the territory of the country was constructed. The Air Quality (AQ) impact on human health and quality of life is evaluated in the terms of AQI, which give an integrated assessment of the impact of pollutants and directly measuring the effects of AQ on human health. All the AQI evaluations are on the basis of air pollutant concentrations obtained from the numerical modelling and make it possible to revile the AQI status spatial/temporal distribution and behavior.The presented results, allow to follow highest recurrence of the indices for the whole period and seasonally, and to analyze the possible reason for high values in the Moderate, High and Very High bands.KeywordsAir pollution modelingAir Quality indexesAQ impactAtmospheric compositionAQI Status