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Urban tracer dispersion experiments during the second DAPPLE field campaign in London 2004 |
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| Authors: | D Martin CS Price IR White G Nickless KF Petersson RE Britter AG Robins SE Belcher JF Barlow M Neophytou SJ Arnold AS Tomlin RJ Smalley DE Shallcross |
| Institution: | 1. School of Atmospheric Sciences, Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Guangzhou, PR China;2. Institute for Environmental and Climate Research, Jinan University, Guangzhou, PR China;3. Department of Building Services Engineering, Hong Kong Polytechnic University, Hong Kong;4. Department of Mechanical Engineering, The University of Hong Kong, Hong Kong |
| Abstract: | As part of the DAPPLE programme two large scale urban tracer experiments using multiple simultaneous releases of cyclic perfluoroalkanes from fixed location point sources was performed. The receptor concentrations along with relevant meteorological parameters measured are compared with a three screening dispersion models in order to best predict the decay of pollution sources with respect to distance. It is shown here that the simple dispersion models tested here can provide a reasonable upper bound estimate of the maximum concentrations measured with an empirical model derived from field observations and wind tunnel studies providing the best estimate. An indoor receptor was also used to assess indoor concentrations and their pertinence to commonly used evacuation procedures. |
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