Atmospheric measurements of ratios between CO<sub>2</sub> and co-emitted species from traffic: a tunnel study in the Paris megacity

Ammoura, L.; Xueref-Remy, I.; Gros, V.; Baudic, A.; Bonsang, B.; Petit, J.-E.; Perrussel, O.; Bonnaire, N.; Sciare, J.; Chevallier, F.

doi:https://doi.org/10.5194/acp-14-12871-2014

Articles | Volume 14, issue 23

https://doi.org/10.5194/acp-14-12871-2014

© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-14-12871-2014

© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 14, issue 23

Research article

|

08 Dec 2014

Research article |

| 08 Dec 2014

Atmospheric measurements of ratios between CO₂ and co-emitted species from traffic: a tunnel study in the Paris megacity

L. Ammoura, I. Xueref-Remy, V. Gros, A. Baudic, B. Bonsang, J.-E. Petit, O. Perrussel, N. Bonnaire, J. Sciare, and F. Chevallier

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC C6544: 'Review Ammoura et al., 2014', Anonymous Referee #1, 04 Sep 2014
RC C6684: 'Review comments', Jocelyn Turnbull, 09 Sep 2014
AC C8258: 'Author answer', L. AMMOURA, 20 Oct 2014

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AR: Author's response | RR: Referee report | ED: Editor decision

AR by L. AMMOURA on behalf of the Authors (22 Oct 2014) Author's response Manuscript

ED: Publish as is (07 Nov 2014) by Christoph Gerbig

AR by L. AMMOURA on behalf of the Authors (13 Nov 2014) Manuscript

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Short summary

We present the first study of CO2, VOCs and NOx measured all together in a road tunnel around the Paris megacity with the aim to quantify the ratios of these species co-emitted within traffic emissions. It allows us to independently assess some of the ratios provided in the latest Paris emission inventory. It also reveals a large variability of the ratios to CO2, implying that traffic does not have a unique imprint in the urban plume, but rather leaves various signatures.

Atmospheric measurements of ratios between CO2 and co-emitted species from traffic: a tunnel study in the Paris megacity

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Atmospheric measurements of ratios between CO₂ and co-emitted species from traffic: a tunnel study in the Paris megacity