HR: 1330h
AN: A22C-1083    [PDF]
TI: The Impact of North American Fires on Aerosol in the U.S.
AU: * Kreidenweis, S
EM: sonia@chem.atmos.colostate.edu
AF: Colorado State University, Department of Atmospheric Science, Ft. Collins, CO 80523 United States
AB: Biomass burning, including forest fires, is a major global source for CO, aerosols and other pollutants. Much focus has been given to biomass burning in the tropics, but recent events have drawn attention to the role of wildfires in North and Central America in influencing aerosol concentrations in the U.S. In this study, we examined IMPROVE aerosol data from national parks in the southeastern U.S. to look for impacts from long-range transport of smoke. Our analyses show that smoke from fires in Canada and Central America, in addition to smoke from U.S. fires, can be detected in about 10% of the aerosol samples from spring and summer over the last decade, with higher contributions in some years. The methodology is being extended to parks in the western U.S., and preliminary results from these analyses will also be presented.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting