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  • 1
    Publication Date: 2011-08-24
    Description: The Biomass Burning Airborne and Spaceborne Experiment-Amazonia was designed for study of both aerosol and gaseous emissions from fires using an airborne sampling platform. The emission factors for combustion products from four fires suggest that the proportion of carbon released in the form of CO2 is higher than for fires of logging which has been burned in the western U.S. Combustion efficiency was of the order of 97 percent for the Amazonian test fire and 86-94 percent for deforestation fires. The inorganic content of particles from tropical fires are noted to be different from those of fires in the U.S.
    Keywords: ENVIRONMENT POLLUTION
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  • 2
    Publication Date: 2011-08-19
    Description: A method based on remote sensing of one emitted product - particulates is developed for the global assessment of trace gases and particulates emission from tropical biomass burning. According to the method, the detected mass of emitted particulates is converted into a mass of emitted trace gases using published relations between the emitted particulates and trace gases for the flaming and smoldering phases. Through an analysis of the 1987 burning season in Brazil during the three months of the dry season, it is shown that there are up to 8000 fires a day each contributing 4500 tons of CO(2), 750 tons of CO, and 26 tons of CH(4) to the atmosphere. A comparison to the estimates of global emissions is also presented.
    Keywords: ENVIRONMENT POLLUTION
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  • 3
    Publication Date: 2011-08-19
    Description: The basic theory of the effect of pollution on cloud microphysics and its global implications is applied to compare the relative effect of a small increase in the consumption rate of oil, coal, or biomass burning on cooling and heating of the atmosphere. The characteristics of and evidence for the SO2 induced cooling effect are reviewed. This perturbation analysis approach permits linearization, therefore simplifying the analysis and reducing the number of uncertain parameters. For biomass burning the analysis is restricted to burning associated with deforestation. Predictions of the effect of an increase in oil or coal burning show that within the present conditions the cooling effect from oil and coal burning may range from 0.4 to 8 times the heating effect.
    Keywords: ENVIRONMENT POLLUTION
    Type: Journal of Climate (ISSN 0894-8755); 4; 578-588
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  • 4
    Publication Date: 2011-08-19
    Keywords: ENVIRONMENT POLLUTION
    Type: Journal of Geophysical Research (ISSN 0148-0227); 95; 9927-993
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  • 5
    Publication Date: 2011-08-19
    Description: A technique for assessing the effects of biomass burning on the climate is described. This method is based on the analysis of remote sensing data for the emitted particulates. The relationship between particulates and trace gases is studied. The assessment technique is applied to the 1987 burning season in Brazil. It is noted that during the dry season there may be up to 5000 fires per day which emit 200 ton/hr CO2, 20 ton/hr CO, and 0.5 ton/hr of CH4 to the atmosphere.
    Keywords: ENVIRONMENT POLLUTION
    Type: Advances in Space Research (ISSN 0273-1177); 9; 7, 19
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  • 6
    Publication Date: 2019-07-12
    Description: The transport, optical properties, total mass, and removal of smoke produced by forest fires in western Canada during late July and early August 1982 are studied using NOAA 7 AVHRR data. Color composite imagery is produced to track the movement of the smoke over Canada and the U.S. as the smoke traveled thousands of km from the source region. Smoke optical thickness, particle size, and single scattering albedo are computed using radiances measured by AVHRR bands 1 and 2. Results show that smoke optical thickness ranged from less that 0.1 to greater than 3.7 and the geometric mean mass radii ranged from 300 to 900 nm. The smoke single scattering albedo ranged from 0.9 to nearly 1.0. The total smoke mass over the eastern U.S. ranged from 0.1 to 0.5 Tg, which is close to the 0.5 Tg estimated from the forest fuel content. The smoke lifetime is estimated to be between 15 and 20 days.
    Keywords: ENVIRONMENT POLLUTION
    Type: Journal of Geophysical Research (ISSN 0148-0227); 95; 9911-992
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