Ultrafine particle fluxes above four major European cities

Claire L. Martin; Ian D. Longley; James R. Dorsey; Rick M. Thomas; Martin W. Gallagher; Eiko Nemitz

doi:10.1016/j.atmosenv.2008.10.009

Ultrafine particle fluxes above four major European cities

Claire L. Martin, Ian D. Longley, James R. Dorsey, Rick M. Thomas, Martin W. Gallagher, Eiko Nemitz

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	4714-4721
Number of pages	8
Journal	Atmospheric Environment
Volume	43
Issue number	31
DOIs	https://doi.org/10.1016/j.atmosenv.2008.10.009
Publication status	Published - 1 Oct 2009

Keywords

Emission
Flux
Sensible heat
Traffic activity
Ultrafine particles
Urban

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10.1016/j.atmosenv.2008.10.009

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title = "Ultrafine particle fluxes above four major European cities",

abstract = "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.",

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AU - Martin, Claire L.

AU - Longley, Ian D.

AU - Dorsey, James R.

AU - Thomas, Rick M.

AU - Gallagher, Martin W.

AU - Nemitz, Eiko

PY - 2009/10/1

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AB - 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.

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KW - Sensible heat

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Ultrafine particle fluxes above four major European cities

Abstract

Keywords

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