Articles | Volume 22, issue 2
Atmos. Chem. Phys., 22, 1131–1148, 2022
https://doi.org/10.5194/acp-22-1131-2022
Atmos. Chem. Phys., 22, 1131–1148, 2022
https://doi.org/10.5194/acp-22-1131-2022
Research article
24 Jan 2022
Research article | 24 Jan 2022

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

Miska Olin et al.

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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.
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