Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.509 IF 5.509
  • IF 5-year value: 5.689 IF 5-year 5.689
  • CiteScore value: 5.44 CiteScore 5.44
  • SNIP value: 1.519 SNIP 1.519
  • SJR value: 3.032 SJR 3.032
  • IPP value: 5.37 IPP 5.37
  • h5-index value: 86 h5-index 86
  • Scimago H index value: 161 Scimago H index 161
Volume 15, issue 17 | Copyright

Special issue: Megapoli-Paris 2009/2010 campaign

Atmos. Chem. Phys., 15, 9799-9818, 2015
https://doi.org/10.5194/acp-15-9799-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 01 Sep 2015

Research article | 01 Sep 2015

Evaluating BC and NOx emission inventories for the Paris region from MEGAPOLI aircraft measurements

H. Petetin1, M. Beekmann1, A. Colomb1,2, H. A. C. Denier van der Gon3, J.-C. Dupont4, C. Honoré5, V. Michoud1,a, Y. Morille4, O. Perrussel5, A. Schwarzenboeck2, J. Sciare6, A. Wiedensohler7, and Q. J. Zhang1,b H. Petetin et al.
  • 1LISA/IPSL, Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR CNRS 7583, Université Paris Est Créteil (UPEC) et Université Paris Diderot (UPD), France
  • 2Laboratoire de Météorologie Physique, Clermont-Ferrand, France
  • 3TNO, Princetonlaan 6, 3584 CB Utrecht, the Netherlands
  • 4Laboratoire de Météorologie Dynamique, Palaiseau, France
  • 5AIRPARIF, Agence de surveillance de la qualité de l'air, Paris, France
  • 6LSCE, Laboratoire des Sciences du Climat et de l'Environnement, CNRS-CEA-UVSQ, Gif-sur-Yvette, France
  • 7Leibniz Institute for Tropospheric Research, Leipzig, Germany
  • anow at: Mines Douai, SAGE, Douai, France
  • bnow at: ARIA, Boulogne-Billancourt, France

Abstract. High uncertainties affect black carbon (BC) emissions, and, despite its important impact on air pollution and climate, very few BC emissions evaluations are found in the literature. This paper presents a novel approach, based on airborne measurements across the Paris, France, plume, developed in order to evaluate BC and NOx emissions at the scale of a whole agglomeration. The methodology consists in integrating, for each transect, across the plume observed and simulated concentrations above background. This allows for several error sources (e.g., representativeness, chemistry, plume lateral dispersion) to be minimized in the model used. The procedure is applied with the CHIMERE chemistry-transport model to three inventories – the EMEP inventory and the so-called TNO and TNO-MP inventories – over the month of July 2009. Various systematic uncertainty sources both in the model (e.g., boundary layer height, vertical mixing, deposition) and in observations (e.g., BC nature) are discussed and quantified, notably through sensitivity tests. Large uncertainty values are determined in our results, which limits the usefulness of the method to rather strongly erroneous emission inventories. A statistically significant (but moderate) overestimation is obtained for the TNO BC emissions and the EMEP and TNO-MP NOx emissions, as well as for the BC / NOx emission ratio in TNO-MP. The benefit of the airborne approach is discussed through a comparison with the BC / NOx ratio at a ground site in Paris, which additionally suggests a spatially heterogeneous error in BC emissions over the agglomeration.

Download & links
Publications Copernicus
Special issue
Download
Citation
Share