HR: 0800h
AN: A31B-0826    [Abstracts]
TI: Fine Particle Composition Measured During ICARTT: An Overview of Inorganic Ions and Water Soluble Organic Carbon
AU: * Peltier, R E
EM: rpeltier@eas.gatech.edu
AF: Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0340 United States
AU: Sullivan, A
EM: asullivan@eas.gatech.edu
AF: Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0340 United States
AU: Hennigan, C
EM: chennigan@eas.gatech.edu
AF: Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0340 United States
AU: Weber, R J
EM: rweber@eas.gatech.edu
AF: Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0340 United States
AU: Brock, C A
EM: charles.a.brock@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, Boulder, CO 80305
AU: Brock, C A
EM: charles.a.brock@noaa.gov
AF: University of Colorado, CIRES, Boulder, CO 80309
AU: Wollny, A G
EM: adam.wollny@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, Boulder, CO 80305
AU: Wollny, A G
EM: adam.wollny@noaa.gov
AF: University of Colorado, CIRES, Boulder, CO 80309
AU: Holloway, J S
EM: John.S.Holloway@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, Boulder, CO 80305
AU: Holloway, J S
EM: John.S.Holloway@noaa.gov
AF: University of Colorado, CIRES, Boulder, CO 80309
AU: deGouw, J
EM: Joost.deGouw@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, Boulder, CO 80305
AU: deGouw, J
EM: Joost.deGouw@noaa.gov
AF: University of Colorado, CIRES, Boulder, CO 80309
AU: Warneke, C
EM: Carsten.Warneke@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, Boulder, CO 80305
AU: Warneke, C
EM: Carsten.Warneke@noaa.gov
AF: University of Colorado, CIRES, Boulder, CO 80309
AB: The Particle-Into-Liquid Sampler (PILS) was deployed on NOAA's WP-3D aircraft during the summer of 2004 in support of the Intercontinental Transport and Chemical Transformation - New England Air Quality Study. Throughout the duration of the study, semi-continuous measurements of fine (PM_1.0) inorganic ion components (sodium, ammonium, potassium, calcium, magnesium, chloride, nitrate, and sulfate) and water-soluble organic carbon (WSOC) were made on the NOAA WP-3D aircraft. Intensive sampling of the urbanized metropolitan areas of the Northeast (e.g. Boston-New York-Washington corridor), as well as biomass plume studies, were also conducted. Within this measurement domain, a range of aerosol sources were sampled, including fresh power plant plumes, relatively fresh and aged urban plumes, and aged biomass plumes. On average, sulfate was found to be a significant fraction of observed PM, comprising approximately 41% of volume, and highest concentrations tended to be at lowest altitudes. Net charge of observed ions was generally near-neutral, although a number of observations suggest more acidic conditions - generally found to be at lower altitudes and in spatial regions known for power generation. WSOC was found to be well correlated with CO, especially during instances of plumes that were dominated by biosmoke. During biomass events (high [WSOC]), analysis of charge balances on the inorganic aerosol show that an unmeasured anion is present. In this paper, we will present an overview of the measurements as well as compare and contrast WSOC and sulfate - two significant species observed during this campaign. This analysis will detail spatial resolution and identify sources of WSOC and sulfate present in the Northeastern United States.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0335 Ion chemistry of the atmosphere (2419, 2427)
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005