Articles | Volume 25, issue 6
https://doi.org/10.5194/acp-25-3363-2025
https://doi.org/10.5194/acp-25-3363-2025
Research article
 | 
20 Mar 2025
Research article |  | 20 Mar 2025

Population exposure to outdoor NO2, black carbon, and ultrafine and fine particles over Paris with multi-scale modelling down to the street scale

Soo-Jin Park, Lya Lugon, Oscar Jacquot, Youngseob Kim, Alexia Baudic, Barbara D'Anna, Ludovico Di Antonio, Claudia Di Biagio, Fabrice Dugay, Olivier Favez, Véronique Ghersi, Aline Gratien, Julien Kammer, Jean-Eudes Petit, Olivier Sanchez, Myrto Valari, Jérémy Vigneron, and Karine Sartelet

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Cited articles

Abbou, G., Ghersi, V., Gaie-Levrel, F., Kauffmann, A., Reynaud, M., Debert, C., Quénel, P., and Baudic, A.: Ultrafine Particles Monitoring in Paris: From Total Number Concentrations to Size Distributions Measurements, Aer. Air. Qual. Res., 24, 240093, https://doi.org/10.4209/aaqr.240093, 2024. a
Adélaïde, L., Medina, S., Wagner, V., de Crouy-Chanel, P., Real, E., Colette, A., Couvidat, F., Bessagnet, B., Alter, M., Durou, A., Host, S., Hulin, M., Corso, M., and Pascal, M.: Covid-19 lockdown in spring 2020 in France provided unexpected opportunity to assess health impacts of falls in air pollution, Front. Sustain. Cities, 3, 643821, https://doi.org/10.3389/frsc.2021.643821, 2021. a
AIRPARIF: Campagne de mesure francilienne sur les particules ultrafines (PUF): Situation de proximité au traffic router été 2021, AIRPARIF reports, https://www.airparif.fr/sites/default/files/document_publication/Rapport_PUF_Trafic_ete_2021.pdf (last access: 17 March 2025), 2022. a, b
AIRPARIF: Données NO2 pour l'année 2022, AIRPARIF [data set], https://data-airparif-asso.opendata.arcgis.com/datasets/0da367910c13407288d75b5e2e93d11f/explore, last access: 17 March 2025a. a
AIRPARIF: Données PM25 pour l'année 2022, https://data-airparif-asso.opendata.arcgis.com/datasets/7b7c1bcd091c417b827a5a4224bac04d/explore, AIRPARIF [data set], last access: 17 March 2025b. a
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Short summary
To accurately represent the population exposure to outdoor concentrations of pollutants of interest to health (NO2, PM2.5, black carbon, and ultrafine particles), multi-scale modelling down to the street scale is set up and evaluated using measurements from field campaigns. An exposure scaling factor is defined, allowing  regional-scale simulations to be corrected to evaluate population exposure. Urban heterogeneities strongly influence NO2, black carbon, and ultrafine particles but less strongly PM2.5.
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