Chemical and Microphysical Properties of Particles in Aged Forest Fire Plumes From Alaska and Western Canada Observed Over the Northeastern U.S.

HR: 0800h
AN: A31C-0070 [Abstracts]
TI: Chemical and Microphysical Properties of Particles in Aged Forest Fire Plumes From Alaska and Western Canada Observed Over the Northeastern U.S.
AU: Brock, C A
EM: Charles.A.Brock@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: Brock, C A
EM: Charles.A.Brock@noaa.gov
AF: CIRES, University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: * Wollny, A G
EM: Adam.Wollny@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: * Wollny, A G
EM: Adam.Wollny@noaa.gov
AF: CIRES, University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: Cooper, O R
EM: Owen.R.Cooper@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: Cooper, O R
EM: Owen.R.Cooper@noaa.gov
AF: CIRES, University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: Fehsenfeld, F C
EM: Fred.C.Fehsenfeld@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: Fehsenfeld, F C
EM: Fred.C.Fehsenfeld@noaa.gov
AF: CIRES, University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: de Gouw, J A
EM: Joost.deGouw@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: de Gouw, J A
EM: Joost.deGouw@noaa.gov
AF: CIRES, University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: Hudson, P K
EM: Paula.K.Hudson@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: Hudson, P K
EM: Paula.K.Hudson@noaa.gov
AF: CIRES, University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: Matthew, B M
EM: Brendan.Matthew@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: Matthew, B M
EM: Brendan.Matthew@noaa.gov
AF: CIRES, University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: Middlebrook, A M
EM: Ann.M.Middlebrook@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: Murphy, D M
EM: Daniel.M.Murphy@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: Simsons, C
EM: Craig.Simons@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: Simsons, C
EM: Craig.Simons@noaa.gov
AF: CIRES, University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: Stohl, A
EM: Andreas.Stohl@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: Stohl, A
EM: Andreas.Stohl@noaa.gov
AF: CIRES, University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: Warneke, C
EM: Carsten.Warneke@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, R/AL7, Boulder, CO 80305 United States
AU: Warneke, C
EM: Carsten.Warneke@noaa.gov
AF: CIRES, University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: Peltier, R
EM: rpeltier@eas.gatech.edu
AF: Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332 United States
AU: Sulivan, A
EM: amy.sullivan@eas.gatech.edu
AF: Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332 United States
AU: Weber, R J
EM: rweber@eas.gatech.edu
AF: Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332 United States
AU: Wilson, J C
EM: jwilson@du.edu
AF: University of Denver, 2199 S. University Blvd., Denver, CO 80208 United States
AB: During the Intercontinental Transport and Chemical Transformation - New England Air Quality Study (ITCT-NEAQS 2004) in July and August 2004 several forest fires plumes were observed over the northeastern U.S. and southeastern Canada. Satellite data and trajectory analyses indicate that the plumes originated from forest fires burning in Alaska and western Canada. In-situ measurements of the aged forest fire smoke were made on board the NOAA WP-3D research aircraft during several flights over a period of 2 weeks. Concentrations of volatile organic compounds (VOCs) and the chemical composition of single aerosol particles in air masses containing forest fire smoke show significant differences compared to background air or to pollution from urban and industrial sources and unambiguously identify the smoke plumes. Particle size distributions from 0.004 to 8 um were measured with one second resolution in the aged forest fire smoke. The smoke was characterized by mass-weighted diameters between 0.6 and 1 um--much larger than secondary particles typical of urban and industrial sources. Particle volume concentrations were among the highest seen within the ITCT-NEAQS 2004 project, and regional visibility and air quality were significantly affected by the transported smoke. Quantitative compositional measurements were made of the non-refractory fraction of submicron particles, as well as of submicron inorganic ionic compounds and water soluble organic mass, within the forest fire plumes. The submicron aerosol particles in the biomass plumes were largely carbonaceous with very little sulfate, ammonium, or nitrate. A fraction of this carbonaceous material was soluble in water and likely contained oxygenated organic species.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0345 Pollution--urban and regional (0305)
DE: 0368 Troposphere--constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting