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Article dans une revue

Multi-scale modeling of roadway air quality impacts: development and evaluation of a plume-in-grid model

Abstract : Eulerian three-dimensional (3D) grid-based models are widely used in air quality modeling. In such models, emissions are instantaneously diluted within the grid cells and, therefore, the near-source impacts of large point and line sources cannot be properly resolved. Plume-in-Grid models (PinG) use a subgrid-scale treatment to better represent local source contributions in an Eulerian grid-based simulation. PinG models already exist for point sources. However, modeling emissions from roadway traffic with point sources implies a very large computational burden. We present here a new PinG model that uses a Gaussian line source model, better suited than point sources to model roadway traffic emissions, embedded within an Eulerian model. The model is evaluated with a large dataset of nitrogen dioxide (NO2) concentrations over a 800 km road network. The PinG model leads to greater NO2 concentrations and shows better performance than the Eulerian model.
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https://hal-enpc.archives-ouvertes.fr/hal-00945110
Contributeur : Véronqiue Dehlinger <>
Soumis le : mardi 11 février 2014 - 16:30:44
Dernière modification le : jeudi 17 octobre 2019 - 21:40:04

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Régis Briant, Christian Seigneur. Multi-scale modeling of roadway air quality impacts: development and evaluation of a plume-in-grid model. Atmospheric environment, Elsevier, 2013, 68, pp.162-173. ⟨10.1016/j.atmosenv.2012.11.058⟩. ⟨hal-00945110⟩

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