Modelling of Ambient Air Quality (MAAQ)

Models are central to effective management of air quality. They provide the link between an understanding of the sources of air pollutants, their concentrations in air and the exposure of populations and ecosystems to the pollutants present in the ambient atmosphere. Defra has an extensive programme of air quality science and research to support its evidence programme. Central to Defra's remit is the development of policy to improve the quality of our environment including air quality across the UK, reduce health i...