ACP Atmospheric Chemistry and Physics ACP 1680-7324 Copernicus GmbH Göttingen, Germany 10.5194/acp-10-9631-2010 Updated African biomass burning emission inventories in the framework of the AMMA-IDAF program, with an evaluation of combustion aerosols Liousse C. 1 Guillaume B. 1 Grégoire J. M. 2 Mallet M. 1 Galy C. 1 Pont V. 1 Akpo A. 3 Bedou M. 4 Castéra P. 1 Dungall L. 5 Gardrat E. 1 Granier C. 6 7 8 Konaré A. 4 Malavelle F. 1 Mariscal A. 9 Mieville A. 6 Rosset R. 1 Serça D. 1 Solmon F. 1 Tummon F. 1 Assamoi E. 1 Yoboué V. 4 Van Velthoven P. 10 Laboratoire d'Aérologie, Université de Toulouse, CNRS, UMR5560, 14 avenue Edouard Belin, 31400 Toulouse, France Joint Research Centre (JRC) of the European Commission Institute for Environment and Sustainability (IES), Global Environment Monitoring Unit (GEM), TP 440 – Via Fermi, 2749, 21027 Ispra (VA), Italy Faculté des Sciences et Techniques, Université d'Abomey-Calavi, BP 07-0094, Cotonou, Benin Université de Cocody Abidjan, UFR SSMT 22 bp 582 Abidjan 22, Ivory Coast Faculté des Sciences – Département de Physique, B.P. 10662 Niamey, Niger UPMC Univ. Paris 6; CNRS-INSU, LATMOS-IPSL, 75005 Paris, France NOAA Earth System Research Laboratory, 80305-3337 Boulder, USA Cooperative Institute for Research in Environmental Sciences, University of Colorado, 80309-0216 Boulder, USA LGIT, Maison des Géosciences, 38400 Saint Martin d'Heres, France KNMI (Royal Netherlands Meteorological Institute), Chemistry and Climate Division, P.O. Box 201, 3730 AE De Bilt, The Netherlands 11 10 2010 10 19 9631 9646 This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://www.atmos-chem-phys.net/10/9631/2010/acp-10-9631-2010.html The full text article is available as a PDF file from http://www.atmos-chem-phys.net/10/9631/2010/acp-10-9631-2010.pdf

African biomass burning emission inventories for gaseous and particulate species have been constructed at a resolution of 1 km by 1km with daily coverage for the 2000–2007 period. These inventories are higher than the GFED2 inventories, which are currently widely in use. Evaluation specifically focusing on combustion aerosol has been carried out with the ORISAM-TM4 global chemistry transport model which includes a detailed aerosol module. This paper compares modeled results with measurements of surface BC concentrations and scattering coefficients from the AMMA Enhanced Observations period, aerosol optical depths and single scattering albedo from AERONET sunphotometers, LIDAR vertical distributions of extinction coefficients as well as satellite data. Aerosol seasonal and interannual evolutions over the 2004–2007 period observed at regional scale and more specifically at the Djougou (Benin) and Banizoumbou (Niger) AMMA/IDAF sites are well reproduced by our global model, indicating that our biomass burning emission inventory appears reasonable.

 References Alfaro, S. C., Lafon, S., Rajot, J. L., Formenti, P., Gaudichet, A., and Maillé, M.: Iron oxides and light absorption by pure desert dust : an experimental study, J. Geophys. Res. 109, D08208, doi:10.1029/2003JD004374, 2004. Andreae, M. O. and Merlet, P.: Emission of trace gases and aerosols from biomass burning, Global Biogeochem. Cy., 15, 955–966, 2001. Assamoi, E. and Liousse, C.: Focus on the impact of two wheel vehicles on African combustion aerosols emissions, Atmos. Environ. 44, 3985–3996, 2010 Barret B., Williams, J. E., Bouarar, I., Yang, X., Josse, B., Law, K., Pham, M., Le Flochmoen, E., Liousse, C., Peuch, V. H., Carver, G. D., Pyle, J. A., Sauvage, B., van Velthoven, P., Schlager, H., Mari, C., and Cammas, J.-P.: Impact of West African Monsoon convective transport and lightning NO<sub>x</sub> production upon the upper tropospheric composition: a multi-model study, Atmos. Chem. Phys., 10, 5719–5738, doi:10.5194/acp-10-5719-2010, 2010. Bauer, S. E., Balkanski, Y., Schulz, M., Hauglustaine, D. A., and Dentener, F.: Global modeling of heterogeneous chemistry on mineral aerosol surfaces: Influence on tropospheric ozone chemistry and comparison to observations, J. Geophys. Res., 109, D02304, doi:10.1029/2003JD003868, 2004. Bauer, S. E., Menon, S., Koch, D., Bond, T. C., and Tsigaridis, K.: A global modeling study on carbonaceous aerosol microphysical characteristics and radiative effects, Atmos. Chem. Phys., 10, 7439–7456, doi:10.5194/acp-10-7439-2010, 2010. Bessagnet, L., Menut, G., Curci, A., Hodzic, B., Guillaume, C., Liousse, S., Moukhtar, B., Pun, Seigneur, C., and Schulz, M.: Regional modeling of carbonaceous aerosols over Europe- focus on secondary organic aerosols, J. Atmos Chem., 61(3), doi:10.1007/s10874-009-9129-2, 2009. Bond, T. C.,. Anderson, T. L., and Campbell, D.: Calibration and intercomparison of filter-based measurement of light absorption by aerosols, Aerosol Sci. Technol., 30, 582–600, 1999. Bowen, H. J. M.: Trace elements in biogeochemistry, Academic Press, London, UK, 241 pp. 1966. Capes, G., Murphy, J. G., Reeves, C. E., McQuaid, J. B., Hamilton, J. F., Hopkins, J. R., Crosier, J., Williams, P. I., and Coe, H.: Secondary organic aerosol from biogenic VOCs over West Africa during AMMA, Atmos. Chem. Phys., 9, 3841–3850, doi:10.5194/acp-9-3841-2009, 2009. Carmichael, G. R., Adhikary, B., Kulkarni, S., D'Allura, A., Tang, Y., Streets, D., Zhang, Q., Bond, T., Ramanathan, V., Jamroensan, A., and Marrapu, P.: Asian aerosols: current and year 2030 distributions and implications to human health and regional climate change, Environ. Sci. Technol. 43, 5811–5817, 2009. Chin, M., Ginoux, P., Kinne, S., Torres, O., Holben, B. N., Duncan, B. N., Martin, R. V., Logan, J. A., Higurashi, A., and Nakajima, T.: Tropospheric Aerosol Optical Thickness from the GOCART Model and Comparisons with Satellite and Sun Photometer Measurements, J. Atmos. Sci., 59, 461–483, 2002. Chou, C., Formenti, P., Maille, M., Ausset, P., Helas, G., Harrison, M., and Osborne, S.: Size distribution, shape, and composition of mineral dust aerosols collected during the African Monsoon Multidisciplinary Analysis Special Observation Period 0: Dust and Biomass-Burning Experiment field campaign in Niger, January 2006, J. Geophys. Res., 113, D00C10, doi:10.1029/2008JD009897, 2008. Collaud Coen, M., Weingartner, E., Apituley, A., Ceburnis, D., Fierz-Schmidhauser, R., Flentje, H., Henzing, J. S., Jennings, S. G., Moerman, M., Petzold, A., Schmid, O., and Baltensperger, U.: Minimizing light absorption measurement artifacts of the aethalometer: evaluation of five correction algorithms, Atmos. Meas. Tech., 3, 457–474, doi:10.5194/amt-3-457-2010, 2010. Cooke, W. F., Koffi, B. and Grégoire, J. M.: Seasonality of vegetation fires in Africa from remote sensing data and application to a global chemistry model, J. Geophys. Res., 101, 21051–21065, 1996. Cooke, W. F., Liousse, C., Cachier, H., Feichter, J.: Construction of a 1$^\circ\times$1° fossil-fuel emission dataset for carbonaceous aerosol and implementation en the ECHAM4 model, J. Geophys. Res., 104, 22137–22162, 1999. Cousin, F., Liousse, C., Cachier, H., Bessagnet, B., Guillaume, B., and Rosset, R.: Aerosol modelling and validation during Escompte 2001, Atmos. Environ., 39(8), 1539–1550, 2005. Crumeyrolle, S., Gomes, L., Tulet, P., Matsuki, A., Schwarzenboeck, A., and Crahan, K.: Increase of the aerosol hygroscopicity by cloud processing in a mesoscale convective system: a case study from the AMMA campaign, Atmos. Chem. Phys., 8, 6907–6924, doi:10.5194/acp-8-6907-2008, 2008. Curtis, L., Rea, W., Smith-Willis, P., Fenyves, E., and Pan, Y.: Adverse health effects of outdoor pollutants, Environ. Int., 32, 815–830, 2006. Delmas, R. A., Druilhet, A., Cros, B., Durand, P., Delon, C., Lacaux, J. P., Brustet, J. M., Serça, D., Affre, C., Guenther, A., Greenberg, J., Baugh, W., Harley, P., Klinger, L., Ginoux, P., Brasseur, G., Zimmerman, P. R., Grégoire, J. M., Janodet, E., Tournier, A., Perros, P., Marion, T., Gaudichet, A., Cachier, H., Ruellan, S., Masclet, P., Cautenet, S., Poulet, D., Boukabiona, C., Nganga, D., Tathy, J. P., Minga, A., Loemba-Ndembi, J., and Ceccato, P.: Experiment for Regional Sources and Sinks of Oxidants (EXPRESSO) : An overview : Experiment for regional sources and sinks of oxidants (EXPRESSO), J. Geophys. Res., 104, 30609–30624, 1999. Delon, C., Galy-Lacaux, C., Boone, A., Liousse, C., Serça, D., Adon, M., Diop, B., Akpo, A., Lavenu, F., Mougin, E., and Timouk, F.: Atmospheric nitrogen budget in Sahelian dry savannas, Atmos. Chem. Phys., 10, 2691–2708, doi:10.5194/acp-10-2691-2010, 2010. Dentener, F. J. and Crutzen, P. J.: Reactions of N<sub>2</sub>O$_5$ on tropospheric aerosols: Impact on the global distributions of NO<sub>x</sub>, O<sub>3</sub>, and OH, J. Geophys. Res., 98(D4), 7149–7163, 1993. Dentener, F. J. and Crutzen, P. J.: A global 3D model of the ammonia cycle, J. Atmos. Chem., 19, 331–369, 1994. Derimian, Y., Leon, J.-F., Dubovik, O., Chiapello, I., Tanre, D., Sinyuk, A., Auriol, F., Podvin, T., Brogniez, G., and Holben, B. N.: Radiative properties of aerosol mixture observed during the dry season 2006 over M'Bour, Senegal (African Monsoon Multidisciplinary Analysis campaign), J. Geophys. Res., 113, D00C09, doi:10.1029/2008JD009904, 2008. Doumbia, T., Liousse, C., Ndiaye, S. A., and Galy Lacaux, C.: Atmospheric pollution in Dakar, Senegal: focus on the aerosol in the frame of POLCA program, AMMA Conference, Ouagadougou (Burkina), 20–25 July, 2009. Dubovik, O., Smirnov, A., Holben, B. N., King, M. D., Kaufman, Y. J., Eck, T. F., and Slutsker, I.: Accuracy assessments of aerosol optical properties retrieved from Aerosol Robotic Network (AERONET) Sun and sky radiance measurements, J. Geophys. Res., 105, 9791–9806, 2000. Fialho, P., Hansen, A. D. A., and Honrath, R. E.: Absorption coefficients by aerosols in remote areas: a new approach to decouple dust and black carbon absorption coefficients using seven-wavelength Aethalometer data, J. Aerosol Sci., 36(2), 267–282, 2005. Formenti, P., Winkler, H., Fourie, P., Piketh, S., Makgopa, B., Helas, G., and Andreae, M. O.: Aerosol optical depth over a remote semi-arid region of South Africa from spectral measurements of the daytime solar extinction and the nighttime stellar extinction, Atmos. Res., 62, 11–32, 2002. Galy-Lacaux, C., Carmichael, G. R., Song, C. H., Lacaux, J. P., Al Ourabi, H., and Modi, A. I.: Heterogeneous processes involving nitrogenous compounds and Saharan dust inferred from measurements and model calculations, J. Geophys. Res., 106(D12), 12559–12578, 2001. Galy, C., Liousse, C., Mallet, M., Pont, V., Dungall, L., Sigha, L., Yoboué, V., Gardrat, E., Castéra, P., Ouafo, M., Mariscal, A., Serça, D., Poirson, A., Akpo, A., Cachier, H., Blarel, L., and Jankowiak, I.: LOP and EOP Ground-based Measurements: Characterization of Physico-chemical properties of the African Aerosol, 2nd international AMMA conference, Karlsruhe, Germany, December 2007. Galy-Lacaux, C., Laouali, D., Descroix, L., Gobron, N., and Liousse, C.: Long term precipitation chemistry and wet deposition in a remote dry savanna site in Africa (Niger), Atmos. Chem. Phys., 9, 1579–1595, doi:10.5194/acp-9-1579-2009, 2009. Gardner, R. M., Adams, K., Cook, T., Deidewig, F., Ernedal, S., Falk, R., Fleuti, E., Hermsg, E., Johnson, C. E., Lecht, M., Lee, D. S., Leech, M., Lister, D., Massé, B., Metcalfe, M., Newton, P., Schmitt, A., Vandenbergh, C., and van Drimmelen, R.: The ANCAT/EC global inventory of NO<sub>x</sub> emissions from aircraft, Atmos. Environ., 31, 1751–1766, 1997. Ghan, S., Laulainen, N., Easter, R., Wagener, R., et al.: Evaluation of aerosol direct radiative forcing in MIRAGE, J. Geophys. Res., 106(D6), 5295–5316, 2001. Gelbard, F., Tambour, Y. and Seinfeld, J. H.: Sectional representation for simulating aerosol dynamics. J. Colloid Interface Sci., 76, 541–556, 1980. Generoso, S., Bey, I., Attie, J. L., and Breon, F. M.: A satellite and model-based assessment of the 2003 Russian fires: inpact on the Artic region., J. Geophys. Res., 112, D15302, doi:10.1029/2006JD008344, 2007. Gong, S. L., Barrie, L. A., and Blanchet, J.-P.: Modeling sea-salt aerosols in the atmosphere. 1. Model development, J. of Geophys. Res., 102(D3), 3805–3818, 2003. Granier, C., Lamarque, J. F., Mieville, A., Muller, J. F., Olivier, J., Orlando, J., Peters, J., Petron, G., Tyndall, G., and Wallens, S.: POET, a database of surface emissions of ozone precursors, available online at: http://www.aero.jussieu.fr/projet/ACCENT/POET.php, 2005. Grégoire, J.-M., Tansey, K., and Silva, J. M. N.: The GBA2000 initiative: Developing a global burned area database from SPOT-VEGETATION imagery, Int. J. Remote Sens., 24(6), 1369–1376, 2002. Guillaume, B., Liousse, C., Rosset, R., Cachier, H., Bessagnet, B., Velthoven, P. V., Poisson, N., Global modelling of internally mixed size-resolved inorganic/organic aerosols with a focus on carbonaceous components. Tellus, B, 9, 283–302, 2007. Haywood, J. M., Pelon, J., Formenti, P., Bharmal, N., Brooks, M., Capes, G., Chazette, P., Chou, C., Christopher, S., Coe, H., Cuesta, J., Derimian, Y., Desboeufs, K., Greed, G., Harrison, M., Heese, B., Highwood, E. J., Johnson, B., Mallet, M., Marticorena, B., Marsham, J., Milton, S., Myhre, G., Osborne, S. R., Parker, D. J., Rajot, J.-L., Schulz, M., Slingo, A., Tanre, D., and Tulet, P.: Overview of the Dust and Biomass-burning Experiment and African Monsoon Multidisciplinary Analysis Special Observing Period-0, J. Geophys. Res., 113, D00C17, doi:10.1029/2008JD010077, 2008. Hoelzemann, J. J., Schultz, M. G., Brasseur, G. P., Granier, C., and Simon, M.: Global Wildland Fire Emission Model (GWEM): Evaluating the use of global area burnt satellite data, J. Geophys. Res., 109, D14504, doi:10.1029/2003JD003666, 2004. Ichoku C. and Kaufman, Y. J.: A method to derive smoke emission rates from MODIS fire radiative energy measurements, IEEE Trans. Geosci. Remote Sens., 43, 2636–2649, 2005. Ito, A. and Penner, J. E.: Global estimates of biomass burning emissions based on satellite imagery for the year 2000, J. Geophys. Res., 109, D14S05, doi:10.1029/2003JD004423, 2004. Jacobson, M. Z.: Global direct radiative forcing due to multicomponent anthropogenic and natural aerosols, J. Geophys. Res., 106, 1551–1568, 2001. Janhäll, S., Andreae, M. O., and Pöschl, U.: Biomass burning aerosol emissions from vegetation fires: particle number and mass emission factors and size distributions, Atmos. Chem. Phys., 10, 1427–1439, doi:10.5194/acp-10-1427-2010, 2010. Jain, A. K.: Global estimation of CO emissions using three sets of satellite data for burned area, Atmos. Environ., 41, 6931–6940, 2007. Johnson, B. T., Heese, B., McFarlane, S. A., Chazette, P., Jones, A., and Bellouin, N.: Vertical distribution and radiative effects of mineral dust and biomass burning aerosol over West Africa during DABEX, J. Geophys. Res., 113, D00C12, doi:10.1029/2008JD009848, 2008. Hansen A.D.A., H. Rosen, and T. Novakov, "Real-time measurement of the absorption coefficient of aerosol particles," Appl. Opt. 21, 3060-3062, 1982. Hao, W. M., Liu, M. H., and Crutzen, P. J.: Estimates of annual and regional releases of CO<sub>2</sub> and other trace gazes to the atmosphere from fires in the tropics, based on the FAO Statistics for the period 1975–1980, in: Fire in the Tropical Biota, Goldammer, J. C., 440–462, 1990. Hao, W. M. and Liu, M.-H.: Spatial and temporal distribution of tropical biomass burning, Global Biogeochem. Cy., 8, 495–503, 1995. Hodzic, A., Vautard, R., Chepfer, H., Goloub, P., Menut, L., Chazette, P., Deuze, J., Apituley, A., and Couvert, P.: Evolution of aerosol optical thickness over Europe during the August 2003 heat wave as seen from CHIMERE model simulations and POLDER data, Atmos. Chem. Phys. 6, 1853–1864, doi:10.5194/acp-6-1853-2006, 2006. Holben, B. N., Eck, T. F., Slutsker, I., Tanré, D., Buis, J. P., Setzer, A., Vermote, E., Reagan, J. A., Kaufman, Y. J., Nakajimu, T., Lavenu, F., Jankowiak, I., and Smirnov, A.: AERONET-A Federated Instrument Network and Data Archive for Aerosol Characterization, Remote Sens. Environ., 66, 1–16, 1998. Houweling, S., Dentener, F., and Lelieveld, J.: The impact of non-methane hydrocarbon compounds on tropospheric photochemistry, J. Geophys. Res., 103, 10673–10696, 1998. Jacob, D. J.: Heterogeneous chemistry and tropospheric ozone, Atmos. Environ. 34, 2131–215, 2000. Jain, A. K.: Global estimation of CO emissions using three sets of satellite data for burned area, Atmos. Environ., 41, 6931–6940, 2007. Junker, C. and Liousse, C.: A global emission inventory of carbonaceous aerosol from historic records of fossil fuel and biofuel consumption for the period 1860–1997, Atmos. Chem. Phys., 8, 1195–1207, doi:10.5194/acp-8-1195-2008, 2008. Kaufman, Y. J., Tanré, D., Holben, B. N., Mattoo, S., Remer, L. A., Eck, T. F., Vaughan, J., and Chatenet, B.: Aerosol radiative impact on spectral solar flux at the surface, derived from principal-plane sky measurements, J. Atmos. Sci., 59, 635–646, 2002. Kim, S.-W., Chazette, P., Dulac, F., Sanak, J., Johnson, B., and Yoon, S.-C.: Vertical structure of aerosols and water vapor over West Africa during the African monsoon dry season, Atmos. Chem. Phys., 9, 8017–8038, doi:10.5194/acp-9-8017-2009, 2009. Kinne, S., Schulz, M., Textor, C., Guibert, S., Balkanski, Y., Bauer, S. E., Berntsen, T., Berglen, T. F., Boucher, O., Chin, M., Collins, W., Dentener, F., Diehl, T., Easter, R., Feichter, J., Fillmore, D., Ghan, S., Ginoux, P., Gong, S., Grini, A., Hendricks, J., Herzog, M., Horowitz, L., Isaksen, I., Iversen, T., KirkevÃ¥g, A., Kloster, S., Koch, D., Kristjansson, J. E., Krol, M., Lauer, A., Lamarque, J. F., Lesins, G., Liu, X., Lohmann, U., Montanaro, V., Myhre, G., Penner, J., Pitari, G., Reddy, S., Seland, Ø., Stier, P., Takemura, T., and Tie, X.: An AeroCom initial assessment – optical properties in aerosol component modules of global models, Atmos. Chem. Phys., 6, 1815–1834, doi:10.5194/acp-6-1815-2006, 2006. Koch, D., Schulz, M., Kinne, S., McNaughton, C., Spackman, J. R., Balkanski, Y., Bauer, S., Berntsen, T., Bond, T. C., Boucher, O., Chin, M., Clarke, A., De Luca, N., Dentener, F., Diehl, T., Dubovik, O., Easter, R., Fahey, D. W., Feichter, J., Fillmore, D., Freitag, S., Ghan, S., Ginoux, P., Gong, S., Horowitz, L., Iversen, T., KirkevÃ¥g, A., Klimont, Z., Kondo, Y., Krol, M., Liu, X., Miller, R., Montanaro, V., Moteki, N., Myhre, G., Penner, J. E., Perlwitz, J., Pitari, G., Reddy, S., Sahu, L., Sakamoto, H., Schuster, G., Schwarz, J. P., Seland, Ø., Stier, P., Takegawa, N., Takemura, T., Textor, C., van Aardenne, J. A., and Zhao, Y.: Evaluation of black carbon estimations in global aerosol models, Atmos. Chem. Phys., 9, 9001–9026, doi:10.5194/acp-9-9001-2009, 2009. Konare, A., Liousse, C., Guillaume, B., Solmon, F., Assamoi, P., Rosset, R., Gregoire, J. M., and Giorgi, F.: Combustion particulate emissions in Africa: regional climate modeling and validation, Atmos. Chem. Phys. Discuss., 8, 6653–6681, doi:10.5194/acpd-8-6653-2008, 2008. Kulmala, M., Laaksonen, A., and Pirjola, L., Parameterizations for sulfuric acid/water nucleation rates, J. Geophys. Res. 103, 8301–8308, 1998. Lacaux, J. P., Brustet, J. M., Delmas, R., Menaut, J. C., Abbadie, L., Bonsang, B., Cachier, H., Baudet, J., Andreae, M. O., and Helas G.: Biomass burning in the tropical savannas of Ivory Coast : an overview of the field experiment fire of savannas (FOS/DECAFE 91), J. Atmos. Chem., 22, 195–216, 1995. Lavoue, D., Liousse, C., Cachier, H., Stocks, B. J., and Goldammer, J. G.: Modeling of carbonaceous particles emitted by boreal and temperate wild-fires at northern latitudes, J. Geophys. Res., 105, 26871–26890, 2000. Lebel, T., Parker, D. J., Flamant, C., Bourles, B., Marticorena, B., Mougin, E., Peugeot, C., Diedhiou, A., Haywood, J. M., Ngamini, J. B., Polcher, J., Redelsperger, J.-L., and Thorncroft, C. D.: The AMMA field campaigns: Multiscale and multidisciplinary observations in the West African region, Q. J. Roy. Meteorol. Soc., 136(S1), 8–33, doi:10.1002/qj.486, 2010 Léon, J.-F., Y. Derimian, I. Chiapello, D. Tanré, T. Podvin, B. Chatenet, A. Diallo, and C. Deroo, 2009: Aerosol vertical distribution and optical properties over M'Bour from 2006 to 2008, Atmos. Chem. Phys., 9, 9249–9261, doi:10.5194/acp-9-9249-2009, 2009. Lesins, G., Chylek, P., and Lohmann, U.: A study of internal and external mixing scenarios and its effet on aerosol optical properties and direct radiative forcing, J. Geophys. Res. 107, 4094, doi:10.1029/2001JD000973, 2002. Liousse C., Cachier, H., and Jennings, S. J.: Optical and thermal measurements of black carbon aerosol content in different environments: variation of the specific attenuation cross-section, sigma (s), Atmos. Environ., 27A, 1203–1211, 1993. Liousse, C., Penner, J. E., Chuang, C., Walton, J. J., Eddleman, H., and Cachier, H.: A global three-dimensional model study of carbonaceous aerosols, J. Geophys. Res., 105, 26871–26890, 1996. Liousse C., Andreae, M. O., Artaxo, P., Barbosa, P., Cachier, H., Grégoire, J. M., Hobbs, P., Lavoué, D., Mouillot, F., Penner, J., and Scholes, M.: Deriving Global Quantitative Estimates for Spatial and Temporal Distributions of Biomass Burning Emissions, In " Emissions of Atmospheric Trace Compounds ", edited by: Granier, C., Artaxo, P., and Reeves, C., Kluwer Academic Publishers, Dordrecht, The Netherlands, 544 pp., 2004. Liousse, C., Michel, C., Bessagnet, B., Cachier, H., and Rosset, R.: 0D-Modelling of Carbonaceous Aerosols over Greater Paris focusing on the organic particle formation, J. Atmos. Chem., 51, 207–221, 2005. Malavelle, F., Pont, V., Solmon, F., Mallet, M., Léon, J.-F., and Liousse, C.: Regional~radiative impacts of mixed dust and~carbonaceous~aerosols over West Africa during AMMA experiment,~3rd international AMMA conference, Ouagadougou, July 2009. Mallet, M., Pont, V., and Liousse, C.: Modelling of strong heterogeneities in aerosol single scattering albedos over a polluted regional zone, Geophys. Res. Lett., 32, L09807, doi:10.1029/2005GL022680, 2005. Mallet, M., Pont, V., Liousse, C., Roger, J. C., and Dubuisson, P.: Simulation of aerosol radiative properties with the ORISAM-RAD model during a pollution event (ESCOMPTE 2001), Atmos. Environ., 40, 7696–7705, 2006. Mallet, M., Pont, V., Liousse, C., Gomes, L., Pelon, J., Osborne, S., Haywood, J., Dubuisson, P., Roger, J. C., Mariscal, A., Thouret, V., and Goloub, P.: Aerosol direct radiative forcing on Djougou (Benin) during the AMMA dry season experiment, J. Geophys. Res., 113, D00C01, doi:10.1029/2007JD009419, 2008. Mallet, M., Tulet, P., Serça, D., Solmon, F., Dubovik, O., Pelon, J., Pont, V., and Thouron, O.: Impact of dust aerosols on the radiative budget, surface heat fluxes, heating rate profiles and convective activity over West Africa during March 2006, Atmos. Chem. Phys., 9, 7143–7160, doi:10.5194/acp-9-7143-2009, 2009. Marticorena, B. and Bergametti, G.: Modeling the atmospheric dust cycle: 1. Design of a soil-derived dust emission scheme, J. Geophys. Res., 100, 16415–16430, 1995. Marticorena, B., Haywood, J., Coe, H., Formenti, P., Liousse, C., Mallet, M., and Pelon, J.: Tropospheric aerosols over West Africa, Highlights from the AMMA international program, Atmos. Sci. Lett., submitted, 2010. Matsuki, A., Schwarzenboeck, A., Venzac, H., Laj, P., Crumeyrolle, S., and Gomes, L.: Cloud processing of mineral dust: direct comparison of cloud residual and clear sky particles during AMMA aircraft campaign in summer 2006, Atmos. Chem. Phys., 10, 1057–1069, 2010. Michel, C., Liousse, C., Grégoire, J.-M., Tansey, K., Carmichael, G. R., and Woo, J.-H.: Biomass burning emission inventory from burn area data given by the SPOT-VEGETATION system in the fram of TRACE-P and ACE-Asia campaigns, J. Geophys. Res., 110, D09304, doi:10.1029/2004JD005461, 2005. Mieville, A., Granier, C., Liousse, C., Guillaume, B., Mouillot, F., Lamarque, J.-F., Grégoire, J.-M., and Pétron, G.: Emissions of gases and particles from biomass burning during the 20th century using satellite data and an historical reconstruction, Atmos. Environ., 44(11), 1469–1477, 2010. Moffet, R. C. and Prather, K. A.: In situ measurements of the mixing state and optical properties of soot with implications for radiative forcing estimate, Proc. Natl. Acad. Sci., 106, 11872–11877, 2009. Myhre, G., Grini, A., Haywood, J. M., Stordal, F., Chatenet, B., Tanré, D., Sundet, J. K., and Isaksen Ivar, S. A.: Modeling the radiative impact of mineral dust during the Saharan Dust Experiment (SHADE) campaign : The Saharan Dust Experiment (SHADE), J. Geophys. Res., 108, SAH6.1-SAH6.13, 2003. Myhre, G., Hoyle, C. R., Berglen, T. F., Johnson, B. T., and Haywood, J. M.: Modeling of the solar radiative impact of biomass burning aerosols during the Dust and Biomass-burning Experiment (DABEX), J. Geophys. Res., 113, D00C16, doi:10.1029/2008JD009857, 2008. Nenes, A., Pandis, S. N., and Pilinis, C.: ISORROPIA: A new thermodynamic equilibrium model for multiphase multicomponent inorganic aerosols, Aquat. Geochem., 4, 123–152, 1998, Odum, J. R., Hoffman, T., Bowman, F., Collins, D., Flagan, R. C., and coauthors: Gas-particle partitioning and secondary aerosol yield, Environ. Sci. Tech., 30, 2580–2585, 1996. Olivier, J. G. J, A. F. Bouwman, J. J. M. Berdowski, C. Veldt, J. P. J. Bloos, A. J. H. Visschedijk, C. W. M. van der Maas, P. Y. J. Zandveld: Sectoral emission inventories of greenhouse gases for 1990 on a per country basis as well as on 1$^\circ\times$1° degrees, Environ. Sci. Pol., 2, 241–263, 1999. Osborne, S. R., Johnson, B. T., Haywood, J. M., Baran, A. J., Harrison, M. A. J., and McConnell, C. L.: Physical and optical properties of mineral dust aerosol during the Dust and Biomass-burning Experiment, J. Geophys. Res., 113, D00C03, doi:10.1029/2007JD00955, 2008. Pelon, J., Mallet, M., Mariscal, A., Goloub, P., Tanre, D., Bou Karam, D., Flamant, C., Haywood, J., Pospichal, B., and Victori, S.: Microlidar observations of biomass burning aerosol over Djougou (Benin) during African Monsoon Multidisciplinary Analysis Special Observation Period 0: Dust and Biomass-Burning Experiment, J. Geophys. Res., 113, D00C18, doi:10.1029/2008JD009976, 2008. Péré, J. C., Mallet, M., Bessagnet, B., and Pont, V.: Evidence of the aerosol core-shell mixing state over Europe by using CHIMERE simulations and AERONET inversions, Geophys. Res. Lett., 36, L09807, doi:10.1029/2009GL037334, 2009. Péré, J. C., Mallet, M., Pont, V., and Bessagnet, B.: Evaluation of a new aerosol optical scheme in the chemistry-transport model CHIMERE using ground-based AERONET and satellite measurements, Atmos. Environ., 44(30), 3688–3699, 2010. Pétron, G., Granier, C., Khattatov, B., Yudin, V., Lamarque, J.-F., Emmons, L., Gille, J., and Edwards, D. P.: Monthly CO surface sources inventory based on the 2000–2001 MOPITT satellite data, Geophys. Res. Lett., 31, L21107, doi:10.1029/2004GL020560, 2004. Petzold, A., Kopp, C., and Niessner, R.: The dependence of the specific attenuation cross section on black carbon mass fraction and particle size, Atmos. Environ., 31, 661–672, 1997. Pinker, R. T., Liu, H., Osborne, S. R., and Akoshile, C.: Radiative Effects of Aerosols in sub-Sahel Africa: Dust and Biomass Burning, J. Geophys. Res., 115, D15205, doi:10.1029/2009JD013335, 2010. Pont V., Mallet, M., Liousse, C., Gomes, L., Malavelle, F., Solmon, F., Galy, C., Gardrat, E., and Castéra, P.: Mixing of dust and carbonaceous aerosols: three concepts of chemical scheme from AMMA dry season experiment (SOP 0 - January 2006) at Djougou (Benin), AMMA Conférence, Ouagadougou (Burkina), 20–25 July 2009. Prospero, J. M., Ginoux, P., Torres, O., Nicholson, S. E., and Gill, T. E.: Environmental characterization of global sources of atmospheric soil dust identified with the NIMBUS7 total ozone mapping spectrometer(TOMS) absorbing aerosol product, Rev. Geophys., p 1002, doi:10.1029/2000RG000095, 2002. Rajot, J. L., Formenti, P., Alfaro, S., Desboeufs, K., Chevaillier, S., Chatenet, B., Gaudichet, A., Journet, E., Marticorena, B., Triquet, S., Maman, A., Mouget, N., and Zakou, A.: AMMA dust experiment: An overview of measurements performed during the dry season special observation period (SOP0) at the Banizoumbou (Niger) supersite, J. Geophys. Res., 113, D00C14, doi:10.1029/2008JD009906, 2008. Raut, J.-C. and Chazette, P.: Radiative budget in the presence of multi-layered aerosol structures in the framework of AMMA SOP-0, Atmos. Chem. Phys., 8, 6839–6864, doi:10.5194/acp-8-6839-2008, 2008. Sauvage B., Thouret, V., Cammas, J.-P., Brioude, J., Nedelec, P., and Mari, C.: Meridional ozone gradients in the African upper troposphere, Geophys. Res. Lett., 34, L03817, doi:10.1029/2006GL028542, 2007. Serça, D., Lohou, F., Pospischal, B., Blarel, L., Cachier, H., Campistron, B., Castera, P., Crewell, S., Galle, S., Galy-Lacaux, C., Goloub, P., Liousse, C., Gardrat, E., Gosset, M., Goutail, F., Mallet, M., Mariscal, A., Pelon, J., Poirson, A., Pont, V., Sciare, J., and Tanré, D., EOP ground-based measurements at the Nangatchori (Benin) AMMA site: a seasonal overview, 2nd international AMMA conference, Karlsruhe, Germany, December, 2007. Slingo, A., Ackerman, T. P., Allan, R. P., et al.: Observations of the impact of a major Saharan dust storm on the atmospheric radiation balance, Geophys. Res. Lett., 33, L24817, doi:10.1029/2006GL027869, 2006. Solmon F., Mallet, M., Elguindi, N., Giorgi, F., Zakey, A., and Konaré, A.: Dust aerosol impact on regional precipitation over western Africa, mechanisms and sensitivity to absorption properties, Geophys. Res. Lett., 35, L24705, doi:10.1029/2008GL035900, 2008. Stier, P., Feichter, J., Kinne, S., Kloster, S., Vignati, E., Wilson, J., Ganzeveld, L., Tegen, I., Werner, M., Balkanski, Y., Schulz, M., Boucher, O., Minikin, A., and Petzold, A.: The aerosol-climate model ECHAM5-HAM, Atmos. Chem. Phys., 5, 1125–1156, doi:10.5194/acp-5-1125-2005, 2005. Stroppiana, D., Brivio, P. A., Grégoire, J.-M., Liousse, C., Guillaume, B., Granier, C., Mieville, A., and Chin, M.: Comparison of global monthly CO emission maps derived from remotely sensed burned area datasets, Atmos. Chem. Phys. Discuss., 10, 17657–17697, 2010. Swap, R. J., Annegarn, H. J., Suttles, J. T., Haywood, J., Helmlinger, M. C., Hely, C., Hobbs, P. V., Holben, B. N., Ji, J., King, M. D., Landmann, T., Maenhaut, W., Otter, L., Pak, B., Piketh, S. J., Platnick, S., Privette, J., Roy, D., Thompson, A. M., Ward, D., and Yokelson, R.: The Southern African Regional Science Initiative (SAFARI 2000): overview of the dry season field campaign, South African J. Sci., 98, 125–130, 2002. Tanré, D., Haywood, J. M., Pelon, J., Léon, J. F., Chatenet, B., Formenti, P., Francis, P., Goloub, P., Highwood, E. J., and Myhre, G.: Measurement and modeling of the Saharan dust radiative impact: overview of the SaHAran Dust Experiment (SHADE), J. Geophys. Res., 8574, 108(D13), doi:10.1029/2002JD003273, 2003. Tansey, K., Grégoire, J. M., Defourny, P., Leigh, R., Pekel, J. F., Van Bogaert, E., and Bartholomé, E.: A new, global, multi-annual (2000–2007) burnt area product at 1 km resolution, Geophys. Res. Lett., 35, L01401, doi:10.1029/2007GL031567, 2008. Tansey, K., Grégoire, J. M., Stroppiana, D., Sousa, A., Silva, J., Pereira, J. M. C., Boschetti, L., Maggi, M., Brivio, P. A., Fraser, R., Flasse, S., Ershov, D., Binaghi, E., Graetz, D., and Peduzzi, P.: Vegetation burning in the year 2000: Global burned area estimates from SPOT vegetation data, J. Geophys Res., 109, D14S03, doi:10.1029/2003JD003598, 2004. Tulet, P., Mallet, M., Pont, V., Pelon, J., and Boone, A.: The 7–12 March dusty storm over West Africa. Dust generation and layering, J. Geophys. Res., 113, D00C08, doi:10.1029/2008JD009871, 2008. Tummon, F., Solmon, F., Liousse, C., and Tadross, M.: Simulation of the direct and semidirect aerosol effects on the southern Africa regional climate during the biomass burning season, J. Geophys. Res., 115, D19206, doi:10.1029/2009JD013738, 2010. Uppala, S., Kalberg, P. W., Simmons, A. J., et al.: The ERA-40 re-analysis, Q. J. Roy. Meteorol. Soc. 131, 2961-3012, doi:10.1256/qj.04.176, 2005. Van der Werf, G. R.: GFED2 updates for 2005–-2008, http://www.falw.vu/~gwerf/GFED/index.html, 2008. Van der Werf, G. R., Randerson, J. T., Giglio, L., Collatz, G. J., Kasibhatla, P. S., and Arellano Jr., A. F.: Interannual variability in global biomass burning emissions from 1997 to 2004, Atmos. Chem. Phys. 6, 3423–3441, 2006. Van Velthoven P. F. J. and Kelder, H.: Estimates of Stratosphere-Troposphere Exchange: Sensitivity to model formulation and horizontal resolution, J. Geophys. Res., 101, 1429–1434, 1996, Williams J. E., Scheele, M. P., van Velthoven, P., Bouarar, I., Law, K., Josse, B., Peuch, V.-H., Yang, X., Pyle, J., Thouret, V., Barret, B., Liousse, C., Hourdin, F., Szopa, S., and Cozic, A.: Global Chemistry simulations in the AMMA Multimodel Intercomparison Project, Bull. Am. Meteorol. Soc., 611–624, 2010. Wooster, M. J.: Small-scale experimental testing of fire radiative energy for quantifying mass combusted in natural vegetation fires, Geophys. Res. Lett., 29(21), 2027, doi:10.1029/2002GL015487, 2002. Wooster, M. J., Roberts, G., Perry, G. L. W., and Kaufman, Y. J.: Retrieval of biomass combustion rates and totals from fire radiative power observations: FRP derivation and calibration relationships between biomass consumption and fire radiative energy release, J. Geophys. Res., 110, D24311, doi:10.1029/2005JD006318, 2005. Zakey, A. S., Solmon, F., and Giorgi, F.: Implementation and testing of a desert dust module in a regional climate model, Atmos. Chem. Phys., 6, 4687–4704, doi:10.5194/acp-6-4687-2006, 2006.