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| HAL : hal-00416203, version 1 |
| Fiche détaillée |  Récupérer au format |
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| Atmospheric Chemistry and Physics 9, 23 (2009) 9315-9327 |
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| Wildfire smoke in the Siberian Arctic in summer: source characterization and plume evolution from airborne measurements |
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| J.-D. Paris 1, 2A. Stohl 3 |
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| (2009) |
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| We present airborne measurements of carbon dioxide (CO2), carbon monoxide (CO), ozone (O3), equivalent black carbon (EBC) and ultra fine particles over North-Eastern Siberia in July 2008 performed during the YAK-AEROSIB/POLARCAT experiment. During a "golden day" (11 July 2008) a number of biomass burning plumes were encountered with CO concentration enhancements of up to 500 ppb relative to a background of 90 ppb. Number concentrations of aerosols in the size range 3.5–200 nm peaked at 4000 cm−3 and the EBC content reached 1.4 μg m−3. These high concentrations were caused by forest fires in the vicinity of the landing airport in Yakutsk where during the descent measurements in fresh smoke could be made. We estimate a combustion efficiency of 90±3% based on CO and CO2 measurements. The emission factor of CO emitted was 59.6±15.2 g CO per kilogram of dry matter burned, suggesting an increase in the average northern hemispheric CO concentration of 3.0–7.2 ppb per million hectares of Siberian forest burned. For BC, we estimate an emission factor of 0.52±0.07 g BC kg−1, comparable to values reported in the literature. The emission ratio of ultra-fine particles (3.5–200 nm) was 26 cm−3 (ppb CO)−1, consistent with other airborne studies. |
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| 1 : | Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE) |
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CNRS : UMR8212 – CEA : DSM/LSCE – Université de Versailles Saint-Quentin-en-Yvelines |
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| 2 : | Institut Pierre-Simon-Laplace (IPSL) |
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CNRS : FR636 – Institut de recherche pour le développement [IRD] – CEA – CNES – INSU – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – Ecole normale supérieure de Paris - ENS Paris |
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| 3 : | Norwegian Institute for Air Research (NILU) |
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Norwegian Institute for Air Research |
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| 4 : | Laboratoire d'aérologie (LA) |
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CNRS : UMR5560 – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III |
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| 5 : | Institute of Atmospheric Optics (IAO) |
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Siberian Division of Russian Academy of Sciences |
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| 6 : | Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) |
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CNRS : UMR8190 – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – INSU |
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| Domaine | : | Sciences de l'environnement/Environnement et Société Sciences de l'environnement/Milieux et Changements globaux Physique/Physique/Physique Atmosphérique et Océanique |
| hal-00416203, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00416203 | |
| oai:hal.archives-ouvertes.fr:hal-00416203 | |
| Contributeur : Catherine Cardon | |
| Soumis le : Dimanche 13 Septembre 2009, 14:57:00 | |
| Dernière modification le : Samedi 12 Décembre 2009, 13:24:00 | |
