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R M Harrison, M Dall 'osto,
D C S Beddows,
A J Thorpe,
W J Bloss,
J D Allan,
H Coe,
J R Dorsey,
M Gallagher,
C Martin,
J Whitehead,
P I Williams,
R L Jones,
J M Langridge,
A K Benton,
C Helfter,
C F Di Marco,
S Smith
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ABSTRACT: The REgents PARk and Tower Environmental Experiment (REPARTEE) comprised two campaigns in Lon-don in October 2006 and October/November 2007. The ex-periment design involved measurements at a heavily traf-ficked roadside site, two urban background sites and an el-evated site at 160–190 m above ground on the BT Tower, supplemented in the second campaign by Doppler lidar mea-surements of atmospheric vertical structure. A wide range of measurements of airborne particle physical metrics and chemical composition were made as well as measurements of a considerable range of gas phase species and the fluxes of both particulate and gas phase substances. Significant find-ings include (a) demonstration of the evaporation of traffic-generated nanoparticles during both horizontal and vertical atmospheric transport; (b) generation of a large base of in-formation on the fluxes of nanoparticles, accumulation mode Published by Copernicus Publications on behalf of the European Geosciences Union. 3066 R. M. Harrison et al.: Atmospheric chemistry and physics in the atmosphere of London particles and specific chemical components of the aerosol and a range of gas phase species, as well as the elucidation of key processes and comparison with emissions inventories; (c) quantification of vertical gradients in selected aerosol and trace gas species which has demonstrated the important role of regional transport in influencing concentrations of sul-phate, nitrate and secondary organic compounds within the atmosphere of London; (d) generation of new data on the atmospheric structure and turbulence above London, includ-ing the estimation of mixed layer depths; (e) provision of new data on trace gas dispersion in the urban atmosphere through the release of purposeful tracers; (f) the determina-tion of spatial differences in aerosol particle size distribu-tions and their interpretation in terms of sources and physico-chemical transformations; (g) studies of the nocturnal oxida-tion of nitrogen oxides and of the diurnal behaviour of nitrate aerosol in the urban atmosphere, and (h) new information on the chemical composition and source apportionment of par-ticulate matter size fractions in the atmosphere of London derived both from bulk chemical analysis and aerosol mass spectrometry with two instrument types.
Atmospheric Chemistry and Physics 01/2012; 12:3065-3114.
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Aerosol Science and Technology 01/2012; 46:639-653. · 2.67 Impact Factor
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ATMOSPHERIC CHEMISTRY AND PHYSICS 01/2011; 11:12567-12578. · 5.52 Impact Factor
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Science of The Total Environment 01/2010; 409:289-293. · 3.29 Impact Factor
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Aerosol Science and Technology 01/2010; 44:930-938. · 2.67 Impact Factor
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Aerosol Science and Technology 01/2008; 42:981-991. · 2.67 Impact Factor
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Journal of Geophysical Research 01/2004; 109(D21302). · 3.02 Impact Factor
