HR: 1340h
AN: A23C-1463    [Abstracts]
TI: Investigation of properties of biomass and wildfires to improve global estimates of biomass burning emissions
AU: * Shcherbyna Petrenko, M
EM: mshcherb@purdue.edu
AF: Purdue University, Department of Earth and Atmospheric Science 550 Stadium Mall Drive, West Lafayette, IN 47907,
AU: Chin, M
EM: mian.chin@nasa.gov
AF: NASA Goddard Space Flight Center, Code 613.3, Greenbelt, MD 20771,
AU: Diehl, T
EM: thomas.diehl@nasa.gov
AF: NASA Goddard Space Flight Center, Code 613.3, Greenbelt, MD 20771,
AU: Kucsera, T
EM: tlk@hyperion.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, Code 613.3, Greenbelt, MD 20771,
AU: Soja, A
EM: a.j.soja@larc.nasa.gov
AF: NASA Langley Research Center, NASA Langley Research Center, Hampton, VA 23681,
AB: Biomass burning emission is one of the largest uncertainties in modeling the spatial and temporal variations of aerosols and their optical properties. Widely used approach used to determine emissions from forest fires involves estimates of burned area, amount of burned biomass and species-specific emission factors. Further transport and distribution of emitted species has also been shown to depend on the emission injection height. Modeled chemical, physical and optical effects of aerosols generated during wildfires depend on concentrations and characteristics of the emitted particles that go as an input into the model. We present here a study of several parameters that determine spatial distribution of biomass-burning emissions, their concentrations and properties. Parameters examined in this project include 1) ecozone-specific carbon consumption, 2) fire severity (low, medium, and high), 3) emission factors for carbonaceous aerosols, 4) diurnal cycle of wildfires, and 5) emission injection height. The resultant emissions from the combinations of the given factors were compared to other sources, such as Global Fire Emission Dataset version 2 (GFEDv2); resultant global distribution if potential emission injection height is compared to the distribution proposed by Dentener et al. (2006) for use in Aerosol Intercomparison experiment (AeroCom). The results of this study will be incorporated into the Goddard Chemistry Aerosol Radiation and Transport (GOCART) model, and potentially other global models, to study the chemistry, transport, and air quality and climate effects of biomass burning emissions.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0360 Radiation: transmission and scattering
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting