Spatially-varying surface roughness and ground-level air quality in an operational dispersion model
Urban form controls the overall aerodynamic roughness of a city, and hence plays a significant role in how air flow interacts with the urban landscape. This paper reports improved model performance resulting from the introduction of variable surface roughness in the operational air-quality model ADM...
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| Veröffentlicht in: | Environmental pollution (1987) 2014-02, Vol.185, p.44-51 |
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| container_title | Environmental pollution (1987) |
| container_volume | 185 |
| creator | BARNES, M. J BRADE, T. K MACKENZIE, A. R WHYATT, J. D CARRUTHERS, D. J STOCKER, J CAI, X HEWITT, C. N |
| description | Urban form controls the overall aerodynamic roughness of a city, and hence plays a significant role in how air flow interacts with the urban landscape. This paper reports improved model performance resulting from the introduction of variable surface roughness in the operational air-quality model ADMS-Urban (v3.1). We then assess to what extent pollutant concentrations can be reduced solely through local reductions in roughness. The model results suggest that reducing surface roughness in a city centre can increase ground-level pollutant concentrations, both locally in the area of reduced roughness and downwind of that area. The unexpected simulation of increased ground-level pollutant concentrations implies that this type of modelling should be used with caution for urban planning and design studies looking at ventilation of pollution. We expect the results from this study to be relevant for all atmospheric dispersion models with urban-surface parameterisations based on roughness. |
| doi_str_mv | 10.1016/j.envpol.2013.09.039 |
| format | Article |
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The unexpected simulation of increased ground-level pollutant concentrations implies that this type of modelling should be used with caution for urban planning and design studies looking at ventilation of pollution. 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| ispartof | Environmental pollution (1987), 2014-02, Vol.185, p.44-51 |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Air flow Air Movements Air Pollutants - analysis Air pollution Air Pollution - statistics & numerical data Applied sciences Atmospheric pollution Cities City centres City Planning Dispersions Exact sciences and technology Humans Models, Chemical Pollutants Pollutants physicochemistry study: properties, effects, reactions, transport and distribution Pollution Pollution abatement Roughness Surface roughness |
| title | Spatially-varying surface roughness and ground-level air quality in an operational dispersion model |
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