Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 8 20 2008 10.5194/acp-8-6147-2008 http://www.atmos-chem-phys.net/8/6147/2008/ http://www.atmos-chem-phys.net/8/6147/2008/acp-8-6147-2008.html http://www.atmos-chem-phys.net/8/6147/2008/acp-8-6147-2008.pdf 6147 6153 2008-10-22 Water vapor release from biomass combustion R. S. Parmar M. Welling M. O. Andreae G. Helas gth@mpch-mainz.mpg.de Max Planck Institute for Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany now at: IIMT Engineering College, Department of Applied Science, Meerut 250001 (UP), India We report on the emission of water vapor from biomass combustion. Concurrent measurements of carbon monoxide and carbon dioxide are used to scale the concentrations of water vapor found, and are referenced to carbon in the biomass. The investigated fuel types include hardwood (oak and African musasa), softwood (pine and spruce, partly with green needles), and African savanna grass. The session-averaged ratio of H₂O to the sum of CO and CO₂ in the emissions from 16 combustion experiments ranged from 1.2 to 3.7, indicating the presence of water that is not chemically bound. This non-bound biomass moisture content ranged from 33% in the dry African hardwood, musasa, to 220% in fresh pine branches with needles. The moisture content from fresh biomass contributes significantly to the water vapor in biomass burning emissions, and its influence on the behavior of fire plumes and pyro-cumulus clouds needs to be evaluated. Agee, J. K., Wright, C. S., Williamson, N., and Huff, M. H.: Foliar moisture content of Pacific Northwest vegetation and its relation to wildland fire behavior, Forest Ecol. Manag., 167, 57–66, 2002. Andreae, M. O. and Merlet, P.: Emission of trace gases and aerosols from biomass burning, Global Biogeochem. Cy., 15, 955–966, 2001. Andreae, M. O., Atlas, E., Harris, G. W., Helas, G., de Kock, A., Koppmann, R., Maenhaut, W., Mano, S., Pollock, W. H., Rudolph, J., Scharffe, D., Schebeske, G., and Welling, M.: Methyl halide emissions from savanna fires in southern Africa, J. Geophys. Res., 101, 23 603–23 613, 1996. Asana, R. D.: Growth analysis of the sugar-cane crop in North Bihar (India), Ann. Botany, N. S., 14/56, 465–486, 1950. Byram, G. M.: Combustion of forest fuels, in: Forest Fire Control and Use, edited by: Davis, K. P., McGraw-Hill, New York, USA, 155–182, 1959. Chalk, L. and Bigg, J. M.: The distribution of moisture in the living stem in Sitka spruce and Douglas fir, Forestry, 29, 5–21, 1956. Chand, D., Andreae, M. O., Zeromskiene, K., Schmid, O., Massling, A., Helas, G., Parmar, R. S., Hennig, T., Iinuma, Y., and Wiedensohler, A.: Humidity-dependent optical properties of aerosols from vegetation fires during the `EFEU' experiment, Geophys. Res. Abstr., 6, 3892, 2004. Chand, D., Schmid, O., Gwaze, P., Parmar, R. S., Helas, G., Zeromskiene, K., Wiedensohler, A., Massling, A., and Andreae, M. O.: Laboratory measurements of smoke optical properties from the burning of Indonesian peat and other types of biomass, Geophys. Res. Lett., 32, L12819, doi:10.1029/2005GL022678, 2005. Chuvieco, E., Aguado, I., and Dimitrakopoulos, A. P.: Conversion of fuel moisture content values to ignition potential for integrated fire danger assessment, Can. J. For. Res., 34, 2284–2293, 2004. Clements, C. B., Potter, B. E., and Zhong, S.: In situ measurements of water vapor, heat, and CO<sub>2</sub> fluxes within a prescribed grass fire, Int. J. Wildland Fire, 15, 299–306, 2006. de Ronde, C., Goldammer, J. G., Wade, D. D., and Soares, R.: Prescribed burning in industrial pine plantations, in: Fire in the tropical biota. Ecosystem processes and global challenges, edited by: Goldammer, J. G., Ecological Studies 84, Springer-Verlag, Berlin-Heidelberg-New York, 216–272, 1990. Dusek, U., Frank, G. P., Helas, G., Hennig, T., Iinuma, Y., Massling, A., Wiedensohler, A., Zeromskiene, K., and Andreae, M. O.: Water uptake of biomass burning aerosols at super- and subsaturated conditions, J. Aerosol Sci., 35, S11–S12, 2004. Dusek, U., Frank, G. P., Helas, G., Iinuma, Y., Zeromskiene, K., Gwaze, P., Hennig, T., Massling, A., Schmid, O., Herrmann, H., Wiedensohler, A., and Andreae, M. O.: `Missing' cloud condensation nuclei in peat smoke, Geophys. Res. Lett., 32, L11802, doi:10.1029//2005GL022473, 2005. Fromm, M., Tupper, A., Rosenfeld, D., Servranckx, R. and McRae, R.: Violent pyro-convective storm devastates Australia's capital and pollutes the stratosphere, Geophys. Res. Lett., 33, L05815, doi:10.1029/2005GL025161, 2006. Hungershoefer, K., Zeromskiene, K., Schmid, O., Iinuma, Y., Helas, G., Parmar, R. S., Andreae, M. O., Herrmann, H., Wiedensohler, A., Trentmann, J., and Trautmann, T.: Comparison of modeled and measured optical properties of fresh biomass burning aerosols from various fuel types, J. Aerosol Sci., 36, p S120, 2005. Hungershoefer, K., Zeromskiene, K., Iinuma, Y., Helas, G., Trentmann, J., Trautmann, T., Parmar, R. S., Wiedensohler, A., Andreae, M. O., and Schmid, O.: Modelling the optical properties of fresh biomass burning aerosol produced in a smoke chamber: results from the EFEU campaign, Atmos. Chem. Phys., 8, 3427–3439, 2008. Iinuma, Y., Brüggemann, E., Gnauk, T., Müller, K., Andreae, M. O., Helas, G., Parmar, R., and Herrmann, H.: Source characterization of biomass burning particles: The combustion of selected European conifers, African hardwood, savanna grass, and German and Indonesian peat, J. Geophys. Res., 112, D08209, doi:10.1029/2006JD007120, 2007. Lobert, J. M.: Verbrennung pflanzlicher Biomasse als Quelle atmosphärischer Spurengase: Cyanoverbindungen, CO, CO₂ und NO$_\rm x$, PhD thesis, Mainz, 1989. Lobert, J. M., Scharffe, D. H., Hao, W. M., and Crutzen, P. J.: Importance of biomass burning in the atmospheric budgets of nitrogen-containing gases, Nature, 364, 552–554, 1990. Lobert, J. M., Scharffe, D. H., Hao, W.-M., Kuhlbusch, T. A., Seuwen, R., Warneck, P., and Crutzen, P. J.: Experimental evaluation of biomass burning emissions: Nitrogen and carbon containing compounds, in: Global Biomass Burning, edited by: Levine, J. S., The MIT Press, Cambridge, Mass., USA, 133–142, 1991. Luderer, G.: Modeling of deep-convective transport of forest fire smoke into the upper troposphere and lower stratosphere, PhD thesis, Mainz, 2007. Luderer, G., Trentmann, J., Winterrath, T., Textor, C., Herzog, M., Graf, H. F., and Andreae, M. O.: Modeling of biomass smoke injection into the lower stratosphere by a large forest fire (Part II): sensitivity studies, Atmos. Chem. Phys., 6, 5261–5277, 2006. Parmar, R. S., Welling, M., Schmid, O., Chand, D., Andreae, M. O., and Helas, G.: Measurement of aerosol and trace gas emissions from vegetation fires for various fuel types and burning conditions, Geophys. Res. Abstr., 6, 04718, 2004. Potter, B. E.: The role of released moisture in the atmospheric dynamics associated with wildland fires, Int. J. Wildland Fire, 14, 77–84, 2005. Schmid, O., Helas, G., Iinuma, Y., Zeromskiene, K., Herrmann, H., Massling, A., Parmar, R. S., Wiedensohler, A., and Andreae, M. O.: Quantification of emissions and specific light absorption for biomass burning aerosols from various fuel types, J. Aerosol Sci., 36, p S121, 2005. Stocks, B. J., van Wilgen, B. W., and Trollope, W. S. W.: Fire behaviour and the dynamics of convection columns in African savannas, in: Fire in the southern African savannas –Ecological and atmospheric perspectives, edited by: Wilgen, B. W., Andreae, M. O., Goldammer, J. G., and Lindesay, J. A., Witwatersrand University Press, Johannesburg, RSA, 47–55, 1997. Trentmann, J., Luderer, G., Winterrath, T., Fromm, M. D., Servranckx, R., Textor, C., Herzog, M., Graf, H.-F., and Andreae, M. O.: Modeling of biomass smoke injection into the lower stratosphere by a large forest fire (Part I): reference simulation, Atmos. Chem. Phys., 6, 5247–5260, 2006. Van Wagner, C. E.: Conditions for the start and spread of crown fire, Can. J. For. Res., 7, 23–34, 1977. Ward, D.: Combustion chemistry and smoke, in: Forest Fires: Behavior and Ecological Effects, edited by: Johnson, E. A. and Miyanishi, K., Academic Press, San Diego, USA, 55–77, 2001. Wilson, C. C., Boggess, W. R., and Kramer, P. J.:Diurnal fluctuations in the moisture content of some herbaceous plants, Amer. J. Botany, 40, 97–100, 1953. Wurzler, S., Herrmann, H., Neusüß, C., Wiedensohler, A., Stratmann, F., Wilck, M., Trautmann, T., Andreae, M. O., Helas, G., Trentmann, J., Langmann, B., Graf, H., and Textor, C.: Impact of vegetation fires on the composition and circulation of the atmosphere: Introduction of the research project EFEU, J. Aerosol Sci., 32, S199–S200, 2001. Zeromskiene, K. Wiedensohler, A., Massling, A., Schmid, O., Parmar, R. S., and, Helas, G.: Physical properties of biomass burning aerosol particles from the EFEU experiment, J. Aerosol Sci., 35, S1165–S1166, 2004.