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Journal Article: ID no. (ISBN etc.):  0148-0227 BibTeX citation key:  Haywood2008
Haywood, J. M., Pelon, J., Formenti, P., Bharmal, N. A., Brooks, M. E., Capes, G., Chazette, P., Chou, C., Christopher, S. A., Coe, H., Cuesta, J., Derimian, Y., Desboeufs, K., Greed, G., Harrison, M. A. J., Heese, B., Highwood, E. J., Johnson, B. T., Mallet, M., Marticorena, B., Marsham, J. H., Milton, S. F., Myhre, G., Osborne, S., Parker, D. J., Rajot, J.-L., Schulz, M., Slingo, A., Tanré, D. & Tulet, P. (2008) Overview of the Dust and Biomass burning Experiment and African Monsoon Multidisciplinary Analysis Special Observing Period-0. IN Journal of Geophysical Research - Atmospheres, 113. D00C17.
Added by: Devic 2008-09-04 15:29:40    Last Edited by: Fanny Lefebvre 2011-01-21 11:24:27
 B  
Categories: Aerosol and Chemistry, General
Keywords: Aerosol
Creators: Bharmal, Brooks, Capes, Chazette, Chou, Christopher, Coe, Cuesta, Derimian, Desboeufs, Formenti, Greed, Harrison, Haywood, Heese, Highwood, Johnson, Mallet, Marsham, Marticorena, Milton, Myhre, Osborne, Parker, Pelon, Rajot, Schulz, Slingo, Tanré, Tulet
Collection: Journal of Geophysical Research - Atmospheres
Bibliographies: cnrm, Prior150410

Peer reviewed
Number of views:  1085
Popularity index:  57.41%
Maturity index:  accepted

 
Abstract
The African Monsoon Multidisciplinary Analysis (AMMA) is a major international campaign investigating far reaching aspects of the African monsoon, climate and the hydrological cycle. A Special Observing Period was established for the dry season (SOP- 0) with a focus on aerosol and radiation measurements. SOP-0 took place during January and February 2006 and involved several ground based measurement sites across west Africa. These were augmented by aircraft measurements made by the Facility for Airborne Atmospheric Measurments (FAAM) aircraft during the Dust and Biomassburning Experiment (DABEX), measurements from an ultra-light aircraft and dedicated modelling efforts. We provide an overview of these measurement and modelling studies together with an analysis of the meteorological conditions that determined the aerosol transport and link the results together to provide a balanced synthesis. The biomass burning aerosol was significantly more absorbing than that measured in other areas and, unlike industrial areas, the ratio of excess carbon monoxide to organic carbon was invariant, which may be due to interaction between the organic carbon and mineral dust aerosol. The mineral dust aerosol in-situ filter measurements close to Niamey reveal very little absorption, while other measurements and remote sensing inversions suggest significantly more absorption. The influence of both mineral dust and biomass burning aerosol on the radiation budget is significant throughout the period, implying that meteorological models should include their radiative effects for accurate weather forecasts and climate simulations. Generally, the operational meteorological models that simulate the production and transport of mineral dust show skill at lead times of 5days or more. Climate models that need to accurately simulate the vertical profiles of both anthropogenic and natural aerosols to accurately represent the direct and indirect effects of aerosols appear to do a reasonable job, although the magnitude of the aerosol scattering is strongly dependent upon the emission data set.
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Last Edited by: Fanny Lefebvre