Articles | Volume 22, issue 14
https://doi.org/10.5194/acp-22-9369-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-22-9369-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Parameterizing the aerodynamic effect of trees in street canyons for the street network model MUNICH using the CFD model Code_Saturne
CEREA, École des Ponts, EDF R&D, Marne-la-Vallée, France
Université Paris-Saclay, INRAE, AgroParisTech, UMR EcoSys, 78850 Thiverval-Grignon, France
Cédric Flageul
PPRIME Institute, Curiosity Group, Université de Poitiers, CNRS, ISAE-ENSMA, Poitiers, France
Bertrand Carissimo
CEREA, École des Ponts, EDF R&D, Marne-la-Vallée, France
Yunyi Wang
CEREA, École des Ponts, EDF R&D, Marne-la-Vallée, France
Andrée Tuzet
Université Paris-Saclay, INRAE, AgroParisTech, UMR EcoSys, 78850 Thiverval-Grignon, France
CEREA, École des Ponts, EDF R&D, Marne-la-Vallée, France
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Cited
16 citations as recorded by crossref.
- Large-eddy simulations on pollutant reduction effects of road-center hedge and solid barriers in an idealized street canyon C. Lin et al. https://doi.org/10.1016/j.buildenv.2023.110464
- Should we care about the level of detail in trees when running urban microscale simulations? R. Fu et al. https://doi.org/10.1016/j.scs.2023.105143
- Experimental and Numerical Analysis of Evaluating the Cooling Potential of a Green Wall in a Controlled Chamber S. Chahardoli et al. https://doi.org/10.1016/j.buildenv.2026.115119
- A Soil–Plant–Atmosphere Continuum model coupled to CFD to simulate plant energy and water exchanges in heterogeneous microclimates J. Vernier et al. https://doi.org/10.1016/j.agrformet.2025.110906
- Modelling green infrastructure for urban air pollution control: Geometric, physical and chemical considerations L. Chen et al. https://doi.org/10.1016/j.buildenv.2026.114721
- Air pollution mapping and variability over five European cities K. Sartelet et al. https://doi.org/10.1016/j.envint.2025.109474
- The Turbulent Flow within a Wind-Aligned Street Canyon with Trees: an Experimental Study A. Ponte et al. https://doi.org/10.1007/s10546-025-00914-z
- Impact of trees on gas concentrations and condensables in a 2-D street canyon using CFD coupled to chemistry modeling Y. Wang et al. https://doi.org/10.1016/j.envpol.2023.121210
- Semi-implicit modeling of plant–air convection in 3D vegetative canopies J. Vernier et al. https://doi.org/10.1016/j.agrformet.2026.111293
- Modeling of street-scale pollutant dispersion by coupled simulation of chemical reaction, aerosol dynamics, and CFD C. Lin et al. https://doi.org/10.5194/acp-23-1421-2023
- LES SENSITIVITY TO DOMAIN SIZE AND GRID RESOLUTION IN IDEALIZED URBAN STREET CANYON N. Saleh et al. https://doi.org/10.22337/2587-9618-2026-22-2-51-72
- Contrasting effects of urban trees on air quality: From the aerodynamic effects in streets to impacts of biogenic emissions in cities A. Maison et al. https://doi.org/10.1016/j.scitotenv.2024.174116
- An innovative method based on CFD to simulate the influence of photovoltaic panels on the microclimate in agrivoltaic conditions V. Joseph et al. https://doi.org/10.1016/j.solener.2025.113571
- Developing low-carbon communities: optimizing residential building layouts in urban centers from the perspective of carbon diffusion impacts M. Feng et al. https://doi.org/10.1007/s13762-026-07139-8
- Unevenly distributed trees facilitate horizontal dispersion of traffic pollutants and redistribute pollution hotspots in a real-world street canyon L. Chen et al. https://doi.org/10.1016/j.jenvman.2026.130616
- Designing agrivoltaic systems for plant protection J. Vernier et al. https://doi.org/10.1016/j.agrformet.2026.111361
16 citations as recorded by crossref.
- Large-eddy simulations on pollutant reduction effects of road-center hedge and solid barriers in an idealized street canyon C. Lin et al. https://doi.org/10.1016/j.buildenv.2023.110464
- Should we care about the level of detail in trees when running urban microscale simulations? R. Fu et al. https://doi.org/10.1016/j.scs.2023.105143
- Experimental and Numerical Analysis of Evaluating the Cooling Potential of a Green Wall in a Controlled Chamber S. Chahardoli et al. https://doi.org/10.1016/j.buildenv.2026.115119
- A Soil–Plant–Atmosphere Continuum model coupled to CFD to simulate plant energy and water exchanges in heterogeneous microclimates J. Vernier et al. https://doi.org/10.1016/j.agrformet.2025.110906
- Modelling green infrastructure for urban air pollution control: Geometric, physical and chemical considerations L. Chen et al. https://doi.org/10.1016/j.buildenv.2026.114721
- Air pollution mapping and variability over five European cities K. Sartelet et al. https://doi.org/10.1016/j.envint.2025.109474
- The Turbulent Flow within a Wind-Aligned Street Canyon with Trees: an Experimental Study A. Ponte et al. https://doi.org/10.1007/s10546-025-00914-z
- Impact of trees on gas concentrations and condensables in a 2-D street canyon using CFD coupled to chemistry modeling Y. Wang et al. https://doi.org/10.1016/j.envpol.2023.121210
- Semi-implicit modeling of plant–air convection in 3D vegetative canopies J. Vernier et al. https://doi.org/10.1016/j.agrformet.2026.111293
- Modeling of street-scale pollutant dispersion by coupled simulation of chemical reaction, aerosol dynamics, and CFD C. Lin et al. https://doi.org/10.5194/acp-23-1421-2023
- LES SENSITIVITY TO DOMAIN SIZE AND GRID RESOLUTION IN IDEALIZED URBAN STREET CANYON N. Saleh et al. https://doi.org/10.22337/2587-9618-2026-22-2-51-72
- Contrasting effects of urban trees on air quality: From the aerodynamic effects in streets to impacts of biogenic emissions in cities A. Maison et al. https://doi.org/10.1016/j.scitotenv.2024.174116
- An innovative method based on CFD to simulate the influence of photovoltaic panels on the microclimate in agrivoltaic conditions V. Joseph et al. https://doi.org/10.1016/j.solener.2025.113571
- Developing low-carbon communities: optimizing residential building layouts in urban centers from the perspective of carbon diffusion impacts M. Feng et al. https://doi.org/10.1007/s13762-026-07139-8
- Unevenly distributed trees facilitate horizontal dispersion of traffic pollutants and redistribute pollution hotspots in a real-world street canyon L. Chen et al. https://doi.org/10.1016/j.jenvman.2026.130616
- Designing agrivoltaic systems for plant protection J. Vernier et al. https://doi.org/10.1016/j.agrformet.2026.111361
Saved (final revised paper)
Latest update: 22 Aug 2026
Short summary
This paper presents a parameterization of the tree crown effect on air flow and pollutant dispersion in a street network model used to simulate air quality at the street level. The new parameterization is built using a finer-scale model (computational fluid dynamics). The tree effect increases with the leaf area index and the crown volume fraction of the trees; the street horizontal velocity is reduced by up to 68 % and the vertical transfer into or out of the street by up to 23 %.
This paper presents a parameterization of the tree crown effect on air flow and pollutant...
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