Atmos. Chem. Phys. Discuss., 12, 28705-28731, 2012
© Author(s) 2012. This work is distributed
under the Creative Commons Attribution 3.0 License.
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
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, D. Fisher10, V. Yershov10, and J.-P. Muller10
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
10UCL Dept. of Space & Climate Physics, Mullard Space Science Laboratory, UK

Abstract. The fires around Moscow in 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 optimized CO fire emission estimates from mid-July to mid-August 2010 amount to approximately 24 Tg CO. This estimate depends only weakly on the assumed diurnal variations and injection height of the emissions. 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.

Citation: Krol, M., Peters, W., Hooghiemstra, P., George, M., Clerbaux, C., Hurtmans, D., McInerney, D., Sedano, F., Bergamaschi, P., El Hajj, M., Kaiser, J. W., Fisher, D., Yershov, V., and Muller, J.-P.: How much CO was emitted by the 2010 fires around Moscow?, Atmos. Chem. Phys. Discuss., 12, 28705-28731, doi:10.5194/acpd-12-28705-2012, 2012.
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