Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 8, issue 3
Articles | Volume 8, issue 3
https://doi.org/10.5194/gmd-8-893-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/gmd-8-893-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 8, issue 3
Development and technical paper
 | 
31 Mar 2015
Development and technical paper |  | 31 Mar 2015

Modelling atmospheric dry deposition in urban areas using an urban canopy approach

N. Cherin, Y. Roustan, L. Musson-Genon, and C. Seigneur

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Short summary
Atmospheric dry deposition is classically modelled using an average roughness length. This approach cannot account for the spatial variability of dry deposition in urban areas. We extend here the urban canyon concept, previously introduced to parametrise momentum and heat transfer to mass transfer. This approach provides spatially distributed dry deposition fluxes that depend on surfaces (streets, walls, roofs) and flow regimes (recirculation and ventilation) within the urban area.
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