Contribution of traffic-originated nanoparticle emissions to regional and local aerosol levels

Olin, Miska; Patoulias, David; Kuuluvainen, Heino; Niemi, Jarkko V.; Rönkkö, Topi; Pandis, Spyros N.; Riipinen, Ilona; Dal Maso, Miikka

doi:https://doi.org/10.5194/acp-22-1131-2022

Articles | Volume 22, issue 2

https://doi.org/10.5194/acp-22-1131-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-1131-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 2

Research article

|

24 Jan 2022

Research article |

| 24 Jan 2022

Contribution of traffic-originated nanoparticle emissions to regional and local aerosol levels

Miska Olin, David Patoulias, Heino Kuuluvainen, Jarkko V. Niemi, Topi Rönkkö, Spyros N. Pandis, Ilona Riipinen, and Miikka Dal Maso

Supplement

https://doi.org/10.5194/acp-22-1131-2022-supplement

Data sets

Time series of gas, particle, and environmental variables measured at the Mäkelänkatu urban street canyon site in May 2017 M. Olin https://doi.org/10.5281/zenodo.3558852

SMEAR III Kumpula meteorology, greenhouse gases and air quality P. Aalto, P. Keronen, M. Leskinen, E. Siivola, and L. Järvi https://doi.org/10.23729/a581f36b-4305-4f52-922a-7a8618567540

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Short summary

An emission factor particle size distribution was determined from the measurements at an urban traffic site. It was used in updating a pre-existing emission inventory, and regional modeling was performed after the update. Emission inventories typically underestimate nanoparticle emissions due to challenges in determining them with high certainty. This update reveals that the simulated aerosol levels have previously been underestimated especially for urban areas and for sub-50 nm particles.