Print Email Facebook Twitter The impact of street canyon morphology and traffic volume on NO2 values in the street canyons of Antwerp Title The impact of street canyon morphology and traffic volume on NO2 values in the street canyons of Antwerp Author Voordeckers, D. (Universiteit Antwerpen) Meysman, F.J.R. (TU Delft BT/Environmental Biotechnology; Universiteit Antwerpen) Billen, P. (Universiteit Antwerpen) Tytgat, T. (Universiteit Antwerpen) Van Acker, M. (Universiteit Antwerpen) Date 2021 Abstract Air pollution remains a major environmental and health concern in urban environments, especially in street canyons that show increased pollution levels due to a lack of natural ventilation. Previous studies have investigated the relationship between street canyon morphology and in-canyon pollution levels. However, these studies are typically limited to the scale of a single street canyon and city-wide assessments on this matter are scarce. In 2018, NO2 concentrations were measured in 321 street canyons in the city of Antwerp (Belgium) as part of the large-scale citizen-science project “CurieuzeNeuzen”. In our research, this data was used to study the correlation between morphological indices (e.g. aspect ratio (AR), lateral aspect ratio (LAR), presence of trees) and the traffic volumes on a city-wide scale. The maximum hourly traffic volume (TVmax) and AR correlated significantly with the measured NO2 values, making them useful indicators for air quality in street canyons. For street canyons with AR > 0.65, a TVmax of 300 vehicles/hour was found as a threshold value to guarantee acceptable air quality. No significant correlations were found for the other parameters. Finally, a number of typical street canyon types were defined, which can be of fundamental interest for further research and spatial policy making. Subject Air pollutionAir quality monitoringCitizen scienceGIS analysisStreet canyonUrban planning To reference this document use: http://resolver.tudelft.nl/uuid:79e62167-2b32-4a4f-99eb-3250147c86a2 DOI https://doi.org/10.1016/j.buildenv.2021.107825 ISSN 0360-1323 Source Building and Environment, 197 Part of collection Institutional Repository Document type journal article Rights © 2021 D. Voordeckers, F.J.R. Meysman, P. Billen, T. Tytgat, M. Van Acker Files PDF 1_s2.0_S0360132321002328_main.pdf 5.12 MB Close viewer /islandora/object/uuid:79e62167-2b32-4a4f-99eb-3250147c86a2/datastream/OBJ/view