Carbon biomass burning emission

Blake NJ, Blake DR, Sive BC, Chen T-Y, Rowland FS, Collins Jr. JE, Sachse GW, Anderson BE (1996) Biomass Burning Emissions and Vertical Distribution of Atmospheric Methyl Halides and Other Reduced Carbon Gases in the South Atlantic Region. J Geophys Res 101 24151... 

Lobert, J. M., D. H. Scharffe, W. M. Hao, T. A. Kuhlbusch, P. Warneck, and P. J. Crutzen. 1991. Experimental evaluation of biomass burning emissions Nitrogen and carbon containing compounds. In Global Biomass Burning Atmospheric, Climatic and Biospheric Implications (J. S. Levine, Ed.). MIT Press, Cambridge, MA. 

Carbon monoxide (CO) strongly influences the concentration of the radical OH in the tropical atmosphere. CO oxidation can lead to either production or destruction of ozone, depending on the NOx mixing ratio. Tropical soils are either a sink or a weak source of CO, where photochemical oxidation of methane and other hydrocarbons and biomass burning emissions are the predominant CO sources. 

BlakeN. E., Blake D. R., Sive B. C., ChenT.-Y., RowlandE. S., Collins J. E., Jr., Sachse G. W., and Anderson B. E. (1996) Biomass burning emissions and vertical distribution of atmospheric methyl halides and other reduced carbon gases in the South Atlantic region. J. Geophys. Res. 101, 24151-24164. 

Lelieveld, J. Crutzen, P.J., 1991 The Role of Clouds in Tropospheric Photochemistry , in Journal of Atmospheric Chemistry, 12 229-267. Lobert, J.M. Scharffe, D.H. Hao, W.M. Kuhlbusch, T.A. Seuwen, R. Wameck, P. Cmtzen, P.J., 1991 Experimental Evaluation of Biomass Burning Emissions Nitrogen and Carbon Containing Compounds , in Levine, J.S. (Ed.) Global Biomass Burning Atmospheric, Climatic and Biosphere Implications (Cambridge, MA MIT Press) 122-125. 

Tropical forests and savannas are the primary source of C emissions that originate from biomass burning (73, 75). However, temperate forests are also sources of atmospheric carbon. Harmon et al. (77) reported that conversion of primary temperate forests to younger, second-growth forests lead to increases in atmospheric CO2 levels, due to losses in long-term carbon storage within these forests. They ascertained that timber exploitation of 5 million hectares of primaiy forests in the Pacific Northwest of North America during the past century has resulted in the addition of 1,500 Tg of C to the atmosphere. 

The contribution of savannah fires exceeds 40% of the global level of biomass burning as a result of which the atmosphere receives minor gas components, such as non-methane hydrocarbons, carbon monoxide, methane, etc., as well as aerosols. According to available estimates for the period 1975-1980, 40%-70% of savannahs were burnt every year, about 6% of such fires took place in Africa. In 1990 about 2 1091 of vegetable biomass were burnt, and as a result 145TgCO got into the atmosphere, which constituted about 30% of anthropogenic CO emissions. 

Committed carbon emissions from biomass burning/decomposition +400 X 10 Mg C yr Result of calculation, to one significant figure +261 X 106 Mg C yr-1 Feamside (1997)... 

Greenberg, J. P., P. R. Zimmerman, L. Heidt, and W. Pollock (1984). Hydrocarbon and carbon monoxide emissions from biomass burning in Brazil. J. Geophys. Res. 89, 1350-1354. 

Emissions from biomass burning could disrupt the oxidizing potential of the atmosphere. The atmosphere has a self-cleaning mechanism, which photochemically oxidized pollutants, such as hydrocarbons, to carbon dioxide, preventing their buildup... 

Most of the gas phase Ci chemistry is elsewhere presented (Chapters 5.3.2.2 and 5.3.3 concerns organic and 2.8.3.2 concerns CO2 and earbonate dissolution). Two species from the heading above, methanol CH3OH and formic acid HCOOH we met as emissions from biomass burning (Table 2.44). Beeause C—O and O—H bonds are much stronger than the C—H bond, OH attaek goes preferable onto C—H (al higher carbon chains preferably at the aC—H) A 5.325 = 7.7 10" cm molecule" s and ks.326... 

Seidl, W. and G. Hanel (1983) Surface-active substances on rainwater and atmospheric particles. Pure and Applied Geophysics 121, 1077-1093 Seiler, W., and P. X Crutzen (1980) Estimates of gross and net fluxes of carbon between the biosphere and the atmosphere from biomass burning. Climatic Change 2, 207-247 Seiler, W., R. Conrad and D. Scharffe (1984) Eield studies of methane emission from termite nests into the atmosphere and measurements of methane uptake by tropical soils. Journal of Atmospheric Chemistry 1, 171-186... 

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