A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ultrafine particles in cities
https://orcid.org/0000-0002-2462-4411
Abstract Ultrafine particles (UFPs; diameter less than 100nm) are ubiquitous in urban air, and an acknowledged risk to human health. Globally, the major source for urban outdoor UFP concentrations is motor traffic. Ongoing trends towards urbanisation and expansion of road traffic are anticipated to further increase population exposure to UFPs. Numerous experimental studies have characterised UFPs in individual cities, but an integrated evaluation of emissions and population exposure is still lacking. Our analysis suggests that the average exposure to outdoor UFPs in Asian cities is about four-times larger than that in European cities but impacts on human health are largely unknown. This article reviews some fundamental drivers of UFP emissions and dispersion, and highlights unresolved challenges, as well as recommendations to ensure sustainable urban development whilst minimising any possible adverse health impacts.
Highlights Spatial variability in ultrafine particle concentrations across cities is assessed. Overview of particle number emissions across European countries is provided. Exposure to ultrafine particles in European and Asian cities is analysed. Particle number emissions in European environment have been found to decrease. A number of technical and practical challenges exist for formulating regulations.
Ultrafine particles in cities
https://orcid.org/0000-0002-2462-4411
Abstract Ultrafine particles (UFPs; diameter less than 100nm) are ubiquitous in urban air, and an acknowledged risk to human health. Globally, the major source for urban outdoor UFP concentrations is motor traffic. Ongoing trends towards urbanisation and expansion of road traffic are anticipated to further increase population exposure to UFPs. Numerous experimental studies have characterised UFPs in individual cities, but an integrated evaluation of emissions and population exposure is still lacking. Our analysis suggests that the average exposure to outdoor UFPs in Asian cities is about four-times larger than that in European cities but impacts on human health are largely unknown. This article reviews some fundamental drivers of UFP emissions and dispersion, and highlights unresolved challenges, as well as recommendations to ensure sustainable urban development whilst minimising any possible adverse health impacts.
Highlights Spatial variability in ultrafine particle concentrations across cities is assessed. Overview of particle number emissions across European countries is provided. Exposure to ultrafine particles in European and Asian cities is analysed. Particle number emissions in European environment have been found to decrease. A number of technical and practical challenges exist for formulating regulations.
Ultrafine particles in cities
https://orcid.org/0000-0002-2462-4411
Abstract Ultrafine particles (UFPs; diameter less than 100nm) are ubiquitous in urban air, and an acknowledged risk to human health. Globally, the major source for urban outdoor UFP concentrations is motor traffic. Ongoing trends towards urbanisation and expansion of road traffic are anticipated to further increase population exposure to UFPs. Numerous experimental studies have characterised UFPs in individual cities, but an integrated evaluation of emissions and population exposure is still lacking. Our analysis suggests that the average exposure to outdoor UFPs in Asian cities is about four-times larger than that in European cities but impacts on human health are largely unknown. This article reviews some fundamental drivers of UFP emissions and dispersion, and highlights unresolved challenges, as well as recommendations to ensure sustainable urban development whilst minimising any possible adverse health impacts.
Highlights Spatial variability in ultrafine particle concentrations across cities is assessed. Overview of particle number emissions across European countries is provided. Exposure to ultrafine particles in European and Asian cities is analysed. Particle number emissions in European environment have been found to decrease. A number of technical and practical challenges exist for formulating regulations.
Ultrafine particles in cities
Kumar, Prashant (author) / Morawska, Lidia (author) / Birmili, Wolfram (author) / Paasonen, Pauli (author) / Hu, Min (author) / Kulmala, Markku (author) / Harrison, Roy M. (author) / Norford, Leslie (author) / Britter, Rex (author)
Environmental International ; 66 ; 1-10
2014-01-16
10 pages
Article (Journal)
Electronic Resource
English
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