ABSTRACT
Urban air pollution is one of the top 15 causes of death and disease globally, as high as in top 10 for high-income countries, responsible for an estimated one million deaths annually (Bechle et al. 2013). Urban areas have unique pollutant properties. Common pollutants in surface air associated with human activities in urban areas include aerosols, ozone (O3), nitrogen dioxide (NO2), carbon monoxide (CO), and sulfur dioxide (SO2). Air pollution generated in many urban regions has become one of the most important environmental problems in the last few decades because of its hazardous effects on human health and its potential impact on local, regional, and global climate.
