Estimativa da qualidade do ar nas principais áreas metropolitanas de nordeste brasileiro

Abstract

Atmospheric pollution has an influence on air quality, which can be compromised if the substances emitted must meet the standards established by CONAMA, which has as reference the guide values recommended by the World Health Organization. The increase in the amount of pollutants, as well as its dispersion in the medium is directly associated with meteorological variables that are responsible for this dispersion or concentration of substances. Therefore, the main objective of this study is to identify the main pollutants and assess the air quality of the capitals of the Northeast of Brazil, for the year 2015. The justification for this study is given this problem of the lack of monitoring of the air quality in the Northeast region. Due to the absence of air quality monitoring stations for most capitals in the region, three data-bases were used in order to estimate the air quality for the nine Federative units, namely, the Concordia Monitoring Station in Metropolitan Region of Salvador in the State of Bahia, the ECMWRF Copernicus model and the data obtained through the NASA Satellite, the pollutants that were evaluated are CO and NO2. To identify the influence of meteorological variables on the processes of dispersion and concentration of atmospheric contaminants, the WRF/Chem model was used in order to simulate the state of the atmosphere to quantify CO and NO2 species.