CO, NOx and 13CO2 as tracers for fossil fuel CO2: results from a pilot study in Paris during winter 2010 - Université Clermont Auvergne Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2013

CO, NOx and 13CO2 as tracers for fossil fuel CO2: results from a pilot study in Paris during winter 2010

Morgan Lopez
M. Schmidt
  • Fonction : Auteur
M. Delmotte
  • Fonction : Auteur
Aurélie Colomb
Valérie Gros
  • Fonction : Auteur
S. J. Lehman
  • Fonction : Auteur
D. Mondelain
O. Perrussel
  • Fonction : Auteur
M. Ramonet
  • Fonction : Auteur
Irène Xueref-Remy
P. Bousquet
  • Fonction : Auteur

Résumé

Measurements of the mole fraction of the CO2 and its isotopes were performed in Paris during the MEGAPOLI winter campaign (January-February 2010). Radiocarbon (14CO2) measurements were used to identify the relative contributions of 77% CO2 from fossil fuel consumption (CO2ff from liquid and gas combustion) and 23% from biospheric CO2 (CO2 from the use of biofuels and from human and plant respiration: CO2bio). These percentages correspond to average mole fractions of 26.4 ppm and 8.2 ppm for CO2ff and CO2bio, respectively. The 13CO2 analysis indicated that gas and liquid fuel contributed 70% and 30%, respectively, of the CO2 emission from fossil fuel use. Continuous measurements of CO and NOx and the ratios CO/CO2ff and NOx/CO2ff derived from radiocarbon measurements during four days make it possible to estimate the fossil fuel CO2 contribution over the entire campaign. The ratios CO/CO2ff and NOx/CO2ff are functions of air mass origin and exhibited daily ranges of 7.9 to 14.5 ppb ppm-1 and 1.1 to 4.3 ppb ppm-1, respectively. These ratios are sufficiently consistent with different emission inventories given the uncertainties of the different approaches.

Dates et versions

hal-00997610 , version 1 (28-05-2014)

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Morgan Lopez, M. Schmidt, M. Delmotte, Aurélie Colomb, Valérie Gros, et al.. CO, NOx and 13CO2 as tracers for fossil fuel CO2: results from a pilot study in Paris during winter 2010. 2014. ⟨hal-00997610⟩
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