Assessing the impacts of urban morphology and emissions on city-scale air quality using a CFD model coupled to chemistry.

. Even with comparable emissions, differences in BMPs yield systematic concentration differences, underscoring the role of urban morphology in modulating near-surface air quality. Results show that wind corridors and open spaces, especially in high-rise districts, enhance ventilation and reduce pollutant accumulation. The framework and findings help identify morphology- and emission-driven hotspots and inform urban planning and air quality management in dense districts.