HR: 0800h
AN: A21B-0848    [Abstracts]
TI: Determination of Plume Heights of Emissions From Siberian Forest Fire in 2002 Using MISR Data
AU: * Leung, F T
EM: fyl@io.harvard.edu
AF: Harvard University, Pierce Hall 29 Oxford St., Cambridge, MA 02138 United States
AU: Logan, J
EM: jal@io.harvard.edu
AF: Harvard University, Pierce Hall 29 Oxford St., Cambridge, MA 02138 United States
AU: Diner, D
EM: djd@jord.jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive , Pasadena, CA 91109 United States
AB: Previous studies have shown that emissions from boreal fires are often found in well defined plumes above the boundary layer. We have shown that injecting a significant fraction of the emissions from boreal fires above the boundary layer results in significant differences in modeled concentrations of both surface and column CO compared to injecting emissions only within the boundary layer. The role of pyroconvection may be particularly important during high fire years. The multi-angle viewing capability of the MISR instrument allows derivation of the heights of aerosol plumes from fires. Several independent estimates show high emissions from Siberian boreal fires in 2002. Preliminary analyses of MISR data in the Yakutiya region, where a large number of fires in Siberia in August were located, show large aerosol plumes in the vicinity of these fires. In this study, we present the results of an analysis of the plume heights derived from MISR data for the major Siberian fires in 2002, particularly in the Tura, Amur, and Yakutiya regions. This represents a first attempt to quantify an important aspect of modeling the transport of emissions boreal forest biomass burning emissions.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0322 Constituent sources and sinks
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005