Articles | Volume 21, issue 24
Atmos. Chem. Phys., 21, 18195–18212, 2021
https://doi.org/10.5194/acp-21-18195-2021
Atmos. Chem. Phys., 21, 18195–18212, 2021
https://doi.org/10.5194/acp-21-18195-2021
Research article
15 Dec 2021
Research article | 15 Dec 2021

Why is the city's responsibility for its air pollution often underestimated? A focus on PM2.5

Philippe Thunis et al.

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Latest update: 27 Nov 2022
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Short summary
Air pollution's origin in cities is still a point of discussion, and approaches to assess the city's responsibility for its pollution are not harmonized and thus not comparable, resulting in sometimes contradicting interpretations. We show that methodological choices can easily lead to differences of a factor of 2 in terms of responsibility outcome and stress that methodological choices and assumptions most often lead to a systematic and important underestimation of the city's responsibility.
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