HR: 12:08h
AN: A32B-09    [Abstracts]
TI: A First Look at How Climatic Variation in the Southern Hemisphere Impacts Aerosol and Trace Gas Production From Biomass Burning
AU: * Swap, R J
EM: swapper@virginia.edu
AF: Dept. of Environmental Sciences, Univ. of Virginia, 291 McCormick Rd., Charlottesville, VA 22904-4123 United States
AU: Annegarn, H J
EM: han@rau.ac.za
AF: Dept. of Geography and Environmental Management, Rand Afrikaans University, P.O. Box 524, Auckland Park 2006, Johannesburg, 2006 South Africa
AU: Caylor, K K
EM: kcaylor@princeton.edu
AF: Dept. of Civil and Environmental Engineering, Princeton University, Engineering Quadrangle, Princeton, NJ 08544 United States
AU: Freitas, S
EM: sfreitas@cptec.inpe.br
AF: ONSET/CPTEC/INPE - Centro de Previsao de Tempo e Estudos Climaticos, Rodovia Presidente Dutra, km 39, Cachoeira Paulista, SP 12630-000 Brazil
AU: McMillan, W W
EM: mcmillan@umbc.edu
AF: Dept. of Physics, Univ. of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250-0001 United States
AU: Keller, M
EM: michael.keller@unh.edu
AF: USDA Forest Service / Complex Systems Research Center, Univ. of New Hampshire, Morse Hall University of New Hampshire 39 College Road, Durham, NH 03824 United States
AU: Shugart, H H
EM: hhs@virginia.edu
AF: Dept. of Environmental Sciences, Univ. of Virginia, 291 McCormick Rd., Charlottesville, VA 22904-4123 United States
AB: A conceptual model of how climatic changes in the Southern Hemisphere impact aerosol and trace gas production associated with Biomass Burning emissions from South America, Southern Africa and Australia is presented. The conceptual model makes use of daily meteorological processes that influence the emission and transport of Southern Hemisphere aerosols and trace gases observed during a series of large-scale intensive atmospheric chemistry and remote sensing validation activities. Observations of atmospheric transports associated with aerosol and trace gases from biomass burning and industrial emissions used in this paper originate from the Southern African Fire-Atmosphere Research Initiative (SAFARI-92) and its follow on activity, the Southern African Regional Science Initiative (SAFARI 2000). Results produced during additional campaigns, most notably, the Brazilian-led Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) will also be utilized. The creation of this empirical model uses an approach that is able to extrapolate data obtained during intensive field campaigns to the regional and inter-hemispherical scale using remotely sensed data. Emphasis will be placed on up-scaling the knowledge gained during focused campaigns to create a conceptual model of the linkages and processes of the physical and biological system on a hemispherical scale. Human induced alterations to the coupled land-atmosphere exchanges will also be discussed conceptually as a potentially important driver of the system.
DE: 1600 GLOBAL CHANGE (New category)
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0315 Biosphere/atmosphere interactions
DE: 0345 Pollution--urban and regional (0305)
DE: 0400 Biogeosciences
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting