Ultrafine particles in cities

Kumar, P., Morawska, L., Birmili, W., Paasonen, P., Hu, M., Kulmala, M., Harrison, R.M., Norford, L., et al. (2014). Ultrafine particles in cities. Environment International 1-10. 10.1016/j.envint.2014.01.013.

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Abstract

Ultrafine particles (UFPs; diameter less than 100 nm) 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.

Item Type:	Article
Uncontrolled Keywords:	City environment; Particle exposure; Health impacts; Particle number concentration; Ultrafine particles
Research Programs:	Mitigation of Air Pollution (MAG) Air Quality & Greenhouse Gases (AIR)
Bibliographic Reference:	Environment International; 66:1-10 (May 2014) (Published online 4 February 2014)
Depositing User:	IIASA Import
Date Deposited:	15 Jan 2016 08:50
Last Modified:	27 Aug 2021 17:39
URI:	https://pure.iiasa.ac.at/10995

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