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Micrometeorological modelling in urban areas : polluant dispersion and radaitive effects modelling

Maya Milliez
Abstract : Atmospheric pollution and urban climate studies require to take into account the complex processes due to heterogeneity of urban areas and the interaction with the buildings. ln order to estimate the impact of buildings on flow and pollutant dispersion, detailed numerical simulations were performed over an idealized urban area, with the three-dimensional model Mercure_Saturne, modelling both concentration means and their fluctuations. To take into account atmospheric radiation in built up areas and the thermal effects of the buildings, we implemented a three-dimensional radiative model adapted to complex geometry. This model, adapted from a scheme used for thermal radiation, solves the radiative transfer equation in a semi-transparent media, using the discrete ordinate method. The new scheme was validated with idealized cases and compared to a complete case.
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https://pastel.archives-ouvertes.fr/pastel-00004042
Contributor : Ecole Des Ponts Paristech <>
Submitted on : Friday, July 18, 2008 - 8:00:00 AM
Last modification on : Friday, July 18, 2008 - 8:00:00 AM
Long-term archiving on: : Friday, September 10, 2010 - 12:47:48 PM

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  • HAL Id : pastel-00004042, version 1

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Maya Milliez. Micrometeorological modelling in urban areas : polluant dispersion and radaitive effects modelling. Sciences of the Universe [physics]. Ecole des Ponts ParisTech, 2006. English. ⟨pastel-00004042⟩

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