Atmos. Chem. Phys. Discuss., 9, 25245-25274, 2009
© Author(s) 2009. This work is distributed
under the Creative Commons Attribution 3.0 License.
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Tracer concentration profiles measured in central London as part of the REPARTEE campaign
D. Martin1, K. F. Petersson1, I. R. White1, S. J. Henshaw1, G. Nickless1, A. Lovelock1, J. F. Barlow2, T. Dunbar2, C. R. Wood2, and D. E. Shallcross1
1School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
2Department of Meteorology, University of Reading, Reading, RG6 6BB, UK

Abstract. There have been relatively few tracer experiments carried out that have looked at vertical plume spread in urban areas. In this paper we present results from cyclic perfluorocarbon tracer experiments carried out in 2006 and 2007 in central London centred on the BT Tower as part of the REPARTEE (Regent's Park and Tower Environmental Experiment) campaign. The height of the tower gives a unique opportunity to study dispersion over a large vertical gradient. These gradients are then compared with classical Gaussian profiles of the relevant stability classes over a range of distances as well as interpretation of data with reference to both anemometry and LIDAR measurements made. Data are then compared with an operational model and contrasted with data taken in central London as part of the DAPPLE campaign looking at dosage compared with non-dimensionalised distance from source. Such analysis illustrates the feasibility of the use of these empirical correlations over these prescribed distances in central London.

Citation: Martin, D., Petersson, K. F., White, I. R., Henshaw, S. J., Nickless, G., Lovelock, A., Barlow, J. F., Dunbar, T., Wood, C. R., and Shallcross, D. E.: Tracer concentration profiles measured in central London as part of the REPARTEE campaign, Atmos. Chem. Phys. Discuss., 9, 25245-25274, doi:10.5194/acpd-9-25245-2009, 2009.
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