HR: 09:15h
AN: A11E-06 [Abstracts]
TI: Transport and Evolution of Aerosol Plumes From Urban and Industrial Sources in the Eastern
U.S.
AU: * Brock, C A
EM: charles.a.brock@noaa.gov
AF: NOAA Aeronomy/Chemical Science Division, 325 Broadway R/AL7, Boulder, CO 80305
United States
AU: Wollny, A G
EM: adam.wollny@noaa.gov
AF: NOAA Aeronomy/Chemical Science Division, 325 Broadway R/AL7, Boulder, CO 80305
United States
AU: Wollny, A G
EM: adam.wollny@noaa.gov
AF: University of Colorado/CIRES, 216 UCB - Room 318, Coulder, CO 80309-0216
United States
AU: deGouw, J
EM: Joost.deGouw@noaa.gov
AF: NOAA Aeronomy/Chemical Science Division, 325 Broadway R/AL7, Boulder, CO 80305
United States
AU: deGouw, J
EM: Joost.deGouw@noaa.gov
AF: University of Colorado/CIRES, 216 UCB - Room 318, Coulder, CO 80309-0216
United States
AU: Warneke, C
EM: Carsten.Warneke@noaa.gov
AF: NOAA Aeronomy/Chemical Science Division, 325 Broadway R/AL7, Boulder, CO 80305
United States
AU: Warneke, C
EM: Carsten.Warneke@noaa.gov
AF: University of Colorado/CIRES, 216 UCB - Room 318, Coulder, CO 80309-0216
United States
AU: Holloway, J S
EM: John.S.Holloway@noaa.gov
AF: NOAA Aeronomy/Chemical Science Division, 325 Broadway R/AL7, Boulder, CO 80305
United States
AU: Holloway, J S
EM: John.S.Holloway@noaa.gov
AF: University of Colorado/CIRES, 216 UCB - Room 318, Coulder, CO 80309-0216
United States
AU: Middlebrook, A M
EM: Ann.M.Middlebrook@noaa.gov
AF: NOAA Aeronomy/Chemical Science Division, 325 Broadway R/AL7, Boulder, CO 80305
United States
AU: Murphy, D M
EM: Daniel.M.Murphy@noaa.gov
AF: NOAA Aeronomy/Chemical Science Division, 325 Broadway R/AL7, Boulder, CO 80305
United States
AU: Neuman, J A
EM: Andy.Neuman@noaa.gov
AF: NOAA Aeronomy/Chemical Science Division, 325 Broadway R/AL7, Boulder, CO 80305
United States
AU: Neuman, J A
EM: Andy.Neuman@noaa.gov
AF: University of Colorado/CIRES, 216 UCB - Room 318, Coulder, CO 80309-0216
United States
AU: Peltier, R
EM: rpeltier@eas.gatech.edu
AF: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA
30332
United States
AU: Weber, R J
EM: rweber@eas.gatech.edu
AF: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA
30332
United States
AB:
In situ measurements of particle size distributions and bulk, size resolved, and single particle composition, as well as
reactive and trace gas species, were made aboard the NOAA WP-3D aircraft as part of the ICARTT field program in summer 2004.
Plumes of pollution originating from industrial and urban sources along the heavily populated Atlantic coastline of the
northeastern U.S. were studied as they propagated over Atlantic coastal waters toward the northeast over a three-day period.
Particle mass loadings exceeding ~10 μg/m3 were associated with sources of sulfur dioxide and with forest fire
smoke. Ratios of gas-phase precursors to particle mass in plumes originating from non-forest-fire sources decreased with
plume age, consistent with to gas-to-particle conversion. The water-soluble organic carbon content of the aerosol particles
did not appreciably increase with plume age once the plumes were more than one day old, while the sulfate content continued
to increase. Particle size distributions in the urban/industrial plumes evolved with time from complex, multimodal
distributions having significant numbers of particles with diameters <0.1 μm, to a unimodal distribution with a mass
mean diameter near 0.5 μm. These mixed sulfate/organic, accumulation-mode particles exported to the North Atlantic lower
troposphere would be efficient cloud condensation nuclei.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0320 Cloud physics and chemistry
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005