Articles | Volume 20, issue 13
Atmos. Chem. Phys., 20, 7717–7740, 2020
https://doi.org/10.5194/acp-20-7717-2020

Special issue: Air Quality Research at Street-Level (ACP/GMD inter-journal...

Atmos. Chem. Phys., 20, 7717–7740, 2020
https://doi.org/10.5194/acp-20-7717-2020

Research article 03 Jul 2020

Research article | 03 Jul 2020

Nonstationary modeling of NO2, NO and NOx in Paris using the Street-in-Grid model: coupling local and regional scales with a two-way dynamic approach

Lya Lugon et al.

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Short summary
This study presents a new version of the multi-scale model Street-in-Grid (SinG) that interconnects regional and local scales in air-quality modeling in urban areas. The new version of SinG performs the finest coupling between transport and chemistry, leading to a numerically stable partitioning between NO and NO2. Multi-scale, local-scale and regional-scale simulations of NO, NO2 and NOx over Paris are compared to observations, and SinG shows good performance for both local and regional scales.
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