Investigation of Emissions and Dispersion of Pollutants from Cars in Tabriz City

Air pollution caused by mobile sources is one of the most important problems in the most populated cities of the world and Iran. But most developing countries are not able to accurately identify and determine the composition and amount of the emission from vehicles and evaluation of them, which restricts local policymakers to adopt appropriate policies and decisions. Mobile sources of Tabriz, Iran with about 0.5 million number and the predicted share of about 72% of air pollution (Kahforooshan and Fatehifar, 2013), are the most important source of air pollution in the city, although no studies have been done in this area. In this study, the IVE emission model was used to calculate the amount of emissions from passenger cars, taxis and buses, and the AERMOD model was used to investigate the dispersion manner of CO, NOx, SOx, and PM2.5 pollutants and compare the predicted results by the model and measured values at air quality monitoring station sites.