HR: 16:45h
AN: A34B-04    [Abstracts]
TI: A critical review of smoke particle evolutionary processes
AU: * Reid, J S
EM: reidj@nrlmry.navy.mil
AF: Naval Research Laboratory Marine Meteorology Division, 7 Grace Hopper St., Stop 2, Monterey, CA 93943
AU: Eck, T
EM: teck@ltpmail.gsfc.nasa.gov
AF: GEST/GSFC, Goddard Space Flight Center, Greenbelt, MD 20771
AU: Zhang, J
EM: zhang@cliamte.gsfc.nasa.gov
AF: Naval Research Laboratory Marine Meteorology Division, 7 Grace Hopper St., Stop 2, Monterey, CA 93943
AU: Koppmann, R
EM: r.koppmann@fz-juelich.de
AF: Institute for Atmospheric Chemistry II, Forschungszentrum Juelich GmbH, Juelich, 52425 Germany
AU: O'Neill, N
EM: noneill@courrier.usherb.ca
AF: Dept. of Meteorology, Univeristy of Sherbrook, Sherbrook, Qu‚ 0001 Canada
AB: Biomass burning, one of the largest sources of accumulation mode particles globally, has been closely studied for its radiative, geochemical, and dynamic impacts. These studies have taken many forms including laboratory burns, in situ experiments, remote sensing, and modeling. While the differing perspectives of these studies have ultimately improved our qualitative understanding of biomass burning issues, the varied nature of the work make inter-comparisons and resolutions of some specific issues difficult. Often, published results contradict each other greatly. In this paper we present results from over 4 years of collaborative research between NRL, Forschengszentrum in Juelich, and NASA GSFC trying to reconcile the literature with respect to particle evolution in smoke plumes. It is evident from these studies that the physical and chemical properties of smoke particles rapidly change with age, with regional hazes typically having volume median diameters ~0.05 mm larger than fresh smoke with significant enhancements in organic acids and various inorganic species such as sulfate. However, quantitative estimates of such growth rates and chemical evolutions are at odds with one another and properties such as hygroscopicity are highly uncertain. Much of this can be resolved between measurement bias and various environmental factors. We propagate the error and discuss the effects of these uncertainties in climate model and remote sensing parameterizations.
UR: http://www.nrlmry.navy.mil/flambe/
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0322 Constituent sources and sinks
DE: 0345 Pollution--urban and regional (0305)
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting