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Volume 13, issue 9
Atmos. Chem. Phys., 13, 4737-4747, 2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Chem. Phys., 13, 4737-4747, 2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 07 May 2013

Research article | 07 May 2013

How much CO was emitted by the 2010 fires around Moscow?

M. Krol1,2,3, W. Peters1, P. Hooghiemstra2,3, M. George4, C. Clerbaux4,5, D. Hurtmans5, D. McInerney6, F. Sedano6, P. Bergamaschi6, M. El Hajj7, J. W. Kaiser8,9,10, D. Fisher11, V. Yershov11, and J.-P. Muller11 M. Krol et al.
  • 1Meteorology and Air Quality, Wageningen University, Wageningen, the Netherlands
  • 2Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, the Netherlands
  • 3Netherlands Institute for Space Research SRON, Utrecht, the Netherlands
  • 4UPMC Univ. Paris 06; Université Versailles St-Quentin; CNRS/INSU, LATMOS-IPSL, Paris, France
  • 5Spectroscopie de l'Atmosphère, Chimie Quantique et Photophysique, Université Libre de Bruxelles (ULB), Brussels, Belgium
  • 6European Commission, Joint Research Centre, Institute for Environment and Sustainability, I-21027 Ispra (VA), Italy
  • 7NOVELTIS, Ramonville Saint Agne, France
  • 8ECMWF, Reading, UK
  • 9Max-Planck-Institute for Chemistry, Mainz, Germany
  • 10King's College London, London, UK
  • 11UCL Dept. of Space & Climate Physics, Mullard Space Science Laboratory, UK

Abstract. The fires around Moscow in July and August 2010 emitted a large amount of pollutants to the atmosphere. Here we estimate the carbon monoxide (CO) source strength of the Moscow fires in July and August by using the TM5-4DVAR system in combination with CO column observations of the Infrared Atmospheric Sounding Interferometer (IASI). It is shown that the IASI observations provide a strong constraint on the total emissions needed in the model. Irrespective of the prior emissions used, the optimised CO fire emission estimates from mid-July to mid-August 2010 amount to approximately 24 Tg CO. This estimate depends only weakly (< 15%) on the assumed diurnal variations and injection height of the emissions. However, the estimated emissions might depend on unaccounted model uncertainties such as vertical transport. Our emission estimate of 22–27 Tg CO during roughly one month of intense burning is less than suggested by another recent study, but substantially larger than predicted by the bottom-up inventories. This latter discrepancy suggests that bottom-up emission estimates for extreme peat burning events require improvements.

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