HR: 08:20h
AN: A21G-02    [Abstracts]
TI: Correlations between Ozone and Secondary Organic Aerosol observed in Urban Locations
AU: * Wood, E
EM: ezrawood@aerodyne.com
AF: Aerodyne Research, Inc., 45 Manning Road, Billerica, MA 01821, United States
AU: Herndon, S
EM: herndon@aerodyne.com
AF: Aerodyne Research, Inc., 45 Manning Road, Billerica, MA 01821, United States
AU: Kroll, J
EM: kroll@aerodyne.com
AF: Aerodyne Research, Inc., 45 Manning Road, Billerica, MA 01821, United States
AU: Onasch, T
EM: onasch@aerodyne.com
AF: Aerodyne Research, Inc., 45 Manning Road, Billerica, MA 01821, United States
AU: Canagaratna, M
EM: mrcana@aerodyne.com
AF: Aerodyne Research, Inc., 45 Manning Road, Billerica, MA 01821, United States
AU: Knighton, B
EM: bknighton@chemistry.montana.edu
AF: Montana State University, Department of Chemistry PO Box 173400, Bozeman, MT 59717, United States
AU: Zavala, M
EM: miguelz@mit.edu
AF: Massachusetts Institute of Technology, Departments of Earth, Atmospheric and Planetary Sciences 77 Massachusetts Ave, Cambridge, MA 02139, United States
AU: Seila, R
EM: seila.robert@epa.gov
AF: Environmental Protection Agency, Research Triangle Park 4930 Old Page Road, Durham, NC 27703, United States
AU: Mazzoleni, C
EM: claudio@lanl.gov
AF: Los Alamos National Laboratory, PO Box 1663, Los Alamos, NM 87545, United States
AU: Thornhill, D
EM: munchie@vt.edu
AF: Virginia Tech, Department of Civil and Environmental Engineering 411 Durham Hall, Blacksburg, VA 24061, United States
AU: Jayne, J
EM: jayne@aerodyne.com
AF: Aerodyne Research, Inc., 45 Manning Road, Billerica, MA 01821, United States
AU: Doug, W
EM: worsnop@aerodyne.com
AF: Aerodyne Research, Inc., 45 Manning Road, Billerica, MA 01821, United States
AU: Kolb, C
EM: kolb@aerodyne.com
AF: Aerodyne Research, Inc., 45 Manning Road, Billerica, MA 01821, United States
AU: Molina, L
EM: ltmolina@mit.edu
AF: Molina Center for Energy and the Environment, 3262 Holiday Ct, Suite 201, La Jolla, CA 92037, United States
AU: Fast, J
EM: Jerome.Fast@pnl.gov
AF: Pacific Northwest National Laboratory, PO Box 999, Richland, WA 99352, United States
AU: de Foy, B
EM: foy@eas.slu.edu
AF: Saint Louis University, Department of Earth and Atmospheric Sciences 3642 Lindell Blvd, St Louis, MO 63108, United States
AU: Williams, E
EM: eric.j.williams@noaa.gov
AF: NOAA Aeronomy Laboratory, NOAA Earth System Research Laboratory 325 Broadway, Boulder, CO 80305, United States
AB: Observations in Mexico City during the MILAGRO 2006 campaign and in Houston during the TexAQS 2000 campaign have shown correlations between Ox (Ox = O₃ + NO₂) and the oxidized component of organic aerosol (OOA), which is interpreted as secondary organic aerosol (SOA). Such a correlation is expected given that ozone production and SOA formation are both fundamentally related to the oxidation of VOCs. We quantitatively investigate the observed correlation between OOA and Ox by comparison with the calculated ratio of the production rates of SOA and ozone. P(SOA)/P(Ox) is calculated using measurements of ambient VOCs, predicted concentrations of unmeasured compounds from vehicle exhaust, and known atmospheric oxidation mechanisms
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting