Urban tracer dispersion experiment in London (DAPPLE) 2003: field study and comparison with empirical prediction

The DAPPLE (Dispersion of Air Pollutants and their Penetration into the Local Environment) project seeks to characterise near‐field urban atmospheric dispersion using a multidisciplinary approach. In this paper we report on the first tracer dispersion experiment carried out in May 2003. Results of c...

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Bibliographic Details
Published in:Atmospheric science letters 2010-10, Vol.11 (4), p.241-248
Main Authors: Martin, D., Nickless, G., Price, C.S., Britter, R.E., Neophytou, M.K., Cheng, H., Robins, A.G., Dobre, A., Belcher, S.E., Barlow, J.F., Tomlin, A.S., Smalley, R.J., Tate, J.E., Colvile, R.N., Arnold, S.J., Shallcross, D.E.
Format: Article
Language:English
Subjects:
Air pollution
Atmospheric diffusion
Atmospheric dispersion
Atmospheric sciences
DAPPLE
Dispersion
Field study
Meteorological measurements
Meteorological observations
Outdoor air quality
perfluorocarbons
Pollutants
Pollution dispersion
Tracers
Urban areas
Vertical mixing
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Summary:The DAPPLE (Dispersion of Air Pollutants and their Penetration into the Local Environment) project seeks to characterise near‐field urban atmospheric dispersion using a multidisciplinary approach. In this paper we report on the first tracer dispersion experiment carried out in May 2003. Results of concurrent meteorological measurements are presented. Variations of receptor tracer concentration with time are presented. Meteorological observations suggest that in‐street channelling and flow‐switching at intersections take place. A comparison between roof top and surface measurements suggest that rapid vertical mixing occurs, and a comparison between a simple dispersion model and maximum concentrations observed are presented. Copyright © 2010 Royal Meteorological Society
ISSN:1530-261X
1530-261X
DOI:10.1002/asl.282