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Ultrafine particles in four European urban environments: results from a new
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hofman, Jelle Staelens, Jeroen Cordell, Richard Stroobants, C. Zikova, Nadezda Hama, S. M. L. Wyche, Kevin P. Kos, G. P. A. Zee, D. S. Smallbone, Kirsty Weijers, Ernie P. Monks, Paul S. Roekens, Edward |
| Copyright Year | 2016 |
| Abstract | 22 To gain a better understanding on the spatiotemporal variation of ultrafine particles (UFPs) in urban 23 environments, this study reports on the first results of a long-term UFP monitoring network, set up in 24 Amsterdam (NL), Antwerp (BE), Leicester (UK) and London (UK). Total number concentrations and size 25 distributions were assessed during 1-2 years at four urban background sites, supplemented with a 26 mobile trailer for co-location monitoring and additional short-term sites. Intraand interurban 27 spatiotemporal UFP variation, associations with commonly-monitored pollutants (PM, NOx and BC) 28 and impacts of wind fields were evaluated. Although comparable size distributions were observed 29 between the four cities, source-related differences were demonstrated within specific particle size 30 classes. Total and size-resolved particle number concentrations showed clear traffic-related temporal 31 variation, confirming road traffic as the major UFP contributor in urban environments. New particle 32 formation events were observed in all cities. Correlations with typical traffic-related pollutants (BC and 33 NOx) were obtained for all monitoring stations, except for Amsterdam, which might be attributable to 34 UFP emissions from Schiphol airport emissions. The temporal variation in particle number 35 concentration correlated fairly weakly between the four cities (rs = 0.28-0.50, COD = 0.28-0.37), yet 36 improved significantly inside individual cities (rs = 0.59-0.77). Nevertheless, considerable differences 37 were still obtained in terms of particle numbers (20-38% for total particle numbers and up to 49% for 38 size-resolved particle numbers), confirming the importance of local source contributions and the need 39 for careful consideration when allocating UFP monitoring stations in heterogeneous urban 40 environments. 41 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://cris.brighton.ac.uk/ws/portalfiles/portal/401928/UFP+in+NW+European+urban+environments_Revision2.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
