Ultrafine particle fluxes above four major European cities

Martin, Claire L.; Longley, Ian D.; Dorsey, James R.; Thomas, Rick M.; Gallagher, Martin W.; Nemitz, Eiko ORCID: 2009 Ultrafine particle fluxes above four major European cities. Atmospheric Environment, 43 (31). 4714-4721.

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Little information is known about the behaviour of ultrafine particles (UFP) on a citywide scale. Total particle number flux, dominated by UFP, and other meteorological parameters were collected from tower sites in Manchester, London, Edinburgh and Gothenburg between 1999 and 2006 using the eddy covariance technique. Averaged diurnal cycles were produced for particle number flux, concentration, sensible heat flux, emission velocity, friction velocity, wind speed and temperature. UFP flux cycles showed clear diurnal trends which were linked to traffic activity and local sources. Wind sector analysis showed contributions to flux from local heavily urbanised areas. A simple parameterised model linking UFP flux to traffic activity, sensible heat and friction velocity above the city was produced.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry
UKCEH and CEH Sections/Science Areas: Billett (to November 2013)
ISSN: 1352-2310
Additional Keywords: Urban, Flux, Emission, Ultrafine particles, Sensible heat, Traffic activity
NORA Subject Terms: Meteorology and Climatology
Ecology and Environment
Atmospheric Sciences
Date made live: 23 Nov 2009 13:12 +0 (UTC)

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