S'ha preparat un breu resum de l'estat de l'art i consideracions per l'Àrea Metropolitana de Barcelona sobre els impactes de les infraestructures verdes urbanes en la qualitat de l'aire. A continuació, es descriuen alguns dels punts que es tracten en aquest document.
Tropospheric ozone (O3) is an important surface pollutant in urban areas, and it has complex formation mechanisms that depend on the atmospheric chemistry and meteorological factors. The severe reductions observed in anthropogenic emissions during the COVID-19 pandemic can further our understanding of the photochemical mechanisms leading to O3 formation and provide guidance for policies aimed at reducing air pollution.