Spatial variability of different fractions of particulate matter within an urban environment and between urban and rural sites
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Author (Corporation)
Publication date
2000
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01A - Journal article
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Parent work
Journal of the Air & Waste Management Association
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Series number
Volume
50
Issue / Number
7
Pages / Duration
1115-1124
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Publisher / Publishing institution
Taylor & Francis
Place of publication / Event location
Oxfordshire
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Abstract
The spatial variability of different fractions of particulate matter (PM) was investigated in the city of Basel, Switzerland, based on measurements performed throughout 1997 with a mobile monitoring station at six sites and permanently recorded measurements from a fixed site. Additionally, PM10 measurements from the following year, which were concurrently recorded at two urban and two rural sites, were compared.
Generally, the spatial variability of PM4, PM10, and total suspended particulates (TSP) within this Swiss urban environment (area = 36 km2) was rather limited. With the exception of one site in a street canyon next to a traffic light, traffic density had only a weak tendency to increase the levels of PM. Mean PM10 concentration at six sites with different traffic densities was in the range of less than ±10% of the mean urban PM10 level. However, comparing the mean PM levels on workdays to that on weekends indicated that the impact of human activities, including traffic, on ambient PM levels may be considerable.
Differences in the daily PM10 concentrations between urban and more elevated rural sites were strongly influenced by the stability of the atmosphere. In summer, when no persistent surface inversions exist, differences between urban and rural sites were rather small. It can therefore be concluded that spatial variability of annual mean PM concentration between urban and rural sites in the Basel area may more likely be caused by varying altitude than by distance to the city center.
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ISBN
ISSN
1096-2247
2162-2906
2162-2906
Language
English
Created during FHNW affiliation
No
Strategic action fields FHNW
Publication status
Published
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Peer review of the complete publication
Open access category
Closed
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Citation
Röösli, M., Braun-Fährlander, C., Künzli, N., Bayer-Oglesby, L., Theis, G., Camenzind, M., Mathys, P., & Staehelin, J. (2000). Spatial variability of different fractions of particulate matter within an urban environment and between urban and rural sites. Journal of the Air & Waste Management Association, 50(7), 1115–1124. https://doi.org/10.1080/10473289.2000.10464161