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| Titel |
Linking urban aerosol fluxes in street canyons to larger scale emissions |
| VerfasserIn |
B. K. Tay, G. B. McFiggans, D. P. Jones, M. W. Gallagher, C. Martin, P. Watkins, R. M. Harrison |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 10, no. 5 ; Nr. 10, no. 5 (2010-03-11), S.2475-2490 |
| Datensatznummer |
250008182
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| Publikation (Nr.) |
 copernicus.org/acp-10-2475-2010.pdf |
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| Zusammenfassung |
| In this study we investigate ultrafine particle (UFP) fluxes using a first
order eddy viscosity turbulence closure Computational Fluid Dynamics (CFD)
model and determine the different factors that influence emissions of UFP
into the urban boundary layer. Both vertical turbulent fluxes as well as the
fluxes due to mean circulatory flow are shown to contribute to the overall
ventilation characteristics of street canyons. We then derive a simple
parameterised numerical prediction model for canyon top UFP venting which is
then compared with tower based micrometeorological flux measurements
obtained during the REPARTEE & CityFlux field experiments. |
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