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Volume 14, issue 23
Atmos. Chem. Phys., 14, 12871–12882, 2014
https://doi.org/10.5194/acp-14-12871-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Chem. Phys., 14, 12871–12882, 2014
https://doi.org/10.5194/acp-14-12871-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

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 et al.

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ADEME: Evolution du Marché, Caractéristiques Environnementales et Techniques, Véhicules Particuliers Neufs Vendus en France en 2013, available at: http://www2.ademe.fr/servlet/getDoc?id=52819&ref=&p1=111 (last access: April 2014), 2013.
Airparif: Bilan des Émissions de Polluants Atmosphériques et de Gaz à Effet de Serre en \^Ile- de-France pour l'Année 2010 et Historique 2000/05: Méthodologie et résultats, available at: http://www.airparif.asso.fr/_pdf/publications/Emissions_2010_CG75.pdf (last access: May 2014), 2013.
AtmoPACA: Les émissions dues aux transports routiers, available at: http://www.atmopaca.org/files/et/081105_AtmoPACA_note_synthese_transport_colloque_ORT.pdf (last access: March 2014), 2007.
Araizaga, A. E., Mancila, Y., and Mendoza, A.: Volatile organic compound emissions from light-duty vehicles in Monterrey, Mexico: a tunnel study, Int. J. Environ. Res., 7, 277–292, 2013.
Bishop, G. A. and Stedman, D. H.: A decade of on-road emissions measurements, Environ. Sci. Technol., 42, 1651–1656, https://doi.org/10.1021/es702413b, 2008.
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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.
We present the first study of CO2, VOCs and NOx measured all together in a road tunnel around...
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