HR: 14:40h
AN: A13E-01 INVITED     [Abstracts]
TI: Ambient VOC Concentration and Emission Measurements during the MCMA 2002 and 2003 Field Campaigns
AU: * Lamb, B K
EM: blamb@wsu.edu
AF: Washington State University, Laboratory for Atmospheric Research Dept of Civil & Environmental Engineering, Pullman, WA 99164-2910 United States
AU: Velasco, E
AF: Washington State University, Laboratory for Atmospheric Research Dept of Civil & Environmental Engineering, Pullman, WA 99164-2910 United States
AU: Allwine, E
AF: Washington State University, Laboratory for Atmospheric Research Dept of Civil & Environmental Engineering, Pullman, WA 99164-2910 United States
AU: Pressley, S
AF: Washington State University, Laboratory for Atmospheric Research Dept of Civil & Environmental Engineering, Pullman, WA 99164-2910 United States
AU: Westberg, H
AF: Washington State University, Laboratory for Atmospheric Research Dept of Civil & Environmental Engineering, Pullman, WA 99164-2910 United States
AU: Knighton, B
AF: Montana State University, Department of Chemistry and Biochemistry PO Box 173400 , Bozeman, MT 59717-3400 United States
AU: Rogers, T
AF: Montana State University, Department of Chemistry and Biochemistry PO Box 173400 , Bozeman, MT 59717-3400 United States
AU: Grimsrud, E
AF: Montana State University, Department of Chemistry and Biochemistry PO Box 173400 , Bozeman, MT 59717-3400 United States
AU: Jobson, T
AF: Pacific Northwest National Laboratory, P.O.Box 999, MSIN K9-30 , Richland, WA 99352 United States
AU: Alexander, M
AF: Pacific Northwest National Laboratory, P.O.Box 999, MSIN K9-30 , Richland, WA 99352 United States
AU: Prazeller, P
AF: Pacific Northwest National Laboratory, P.O.Box 999, MSIN K9-30 , Richland, WA 99352 United States
AU: Volkamer, R
AF: Massachusetts Institute of Technology, 77 Massachusetts Av, Cambridge, MA 02139 United States
AU: de Foy, B
AF: Massachusetts Institute of Technology, 77 Massachusetts Av, Cambridge, MA 02139 United States
AU: Molina, L
AF: Massachusetts Institute of Technology, 77 Massachusetts Av, Cambridge, MA 02139 United States
AU: Molina, M
AF: Massachusetts Institute of Technology, 77 Massachusetts Av, Cambridge, MA 02139 United States
AU: Grutter, M
AF: Universidad Nacional Autonoma de Mexico, Centro de Ciencias de la Atmsfera - UNAM Universidad Nacional Aut¢noma de M‚xico Circuito Exterior s/n, Ciudad Universitaria Delegaci¢n Coyoac n, 04510 M‚xico D.F , Mexico City, DF 04510 Mexico
AU: Bueno, E
AF: National Center for Environmental Research and Training (CENICA), National Institute of Ecology (INE) Perif‚rico 5000, Col. Insurgentes Cuicuilco, C.P. 04530, Del. Coyoac n, M‚xico D.F , Coyoacan, DF 04530 Mexico
AU: Blanco, S
AF: National Center for Environmental Research and Training (CENICA), National Institute of Ecology (INE) Perif‚rico 5000, Col. Insurgentes Cuicuilco, C.P. 04530, Del. Coyoac n, M‚xico D.F , Coyoacan, DF 04530 Mexico
AU: Wohrnschimmel, H
AF: National Center for Environmental Research and Training (CENICA), National Institute of Ecology (INE) Perif‚rico 5000, Col. Insurgentes Cuicuilco, C.P. 04530, Del. Coyoac n, M‚xico D.F , Coyoacan, DF 04530 Mexico
AU: Cardenas, B
AF: National Center for Environmental Research and Training (CENICA), National Institute of Ecology (INE) Perif‚rico 5000, Col. Insurgentes Cuicuilco, C.P. 04530, Del. Coyoac n, M‚xico D.F , Coyoacan, DF 04530 Mexico
AU: Arriaga, J L
AF: Instituto Mexicano del Petroleo, Eje Central L zaro C rdenas 152 M‚xico, D.F. C.P. 07730 M‚xico , Mexico City, D.F 07730 Mexico
AU: Limon, M T
AF: Instituto Mexicano del Petroleo, Eje Central L zaro C rdenas 152 M‚xico, D.F. C.P. 07730 M‚xico , Mexico City, D.F 07730 Mexico
AU: Escalona, S
AF: Instituto Mexicano del Petroleo, Eje Central L zaro C rdenas 152 M‚xico, D.F. C.P. 07730 M‚xico , Mexico City, D.F 07730 Mexico
AU: Iglesias, G S
AF: Instituto Mexicano del Petroleo, Eje Central L zaro C rdenas 152 M‚xico, D.F. C.P. 07730 M‚xico , Mexico City, D.F 07730 Mexico
AU: Doskey, P
AF: Argonne National Laboratory, Environmental Research Division Bldg. 203/ER , Argonne, IL 60439 United States
AU: Gaffney, J
AF: Argonne National Laboratory, Environmental Research Division Bldg. 203/ER , Argonne, IL 60439 United States
AB: As part of the MCMA 2002 and 2003 field campaigns in Mexico City, ambient VOC samples were collected from airshed boundary sites, central urban core sites and downwind urban receptor sites. Samples were also obtained during mobile vehicle chase operations designed to obtain data on direct vehicle emissions. During MCMA 2003, additional VOC data were collected including open, long path measurements at the Cenica and La Merced sites, direct eddy covariance flux measurements at Cenica, other canister and cartridge samples collected at La Merced and balloon profiles collected at Cenica. In addition, an automated continuous VOC sampling and analysis system was operated at Cenica. Collectively, the VOC data are consistent with previous measurements that show significantly higher levels of light alkanes compared to US cities. The levels of most other VOCs are also elevated compared to the median for US cities. Examination of the VOC data in terms of lumped VOC classes and suggests that some, but not all, classes are underestimated in the emission inventory by factors of 2 to 3. The use of ratios of individual VOC is useful for examining the effects of chemistry or nearby sources on measured VOC levels. Comparison of PTR-MS results with GC/FID data showed very good agreement for a number of aromatics, and the PTR-MS data for oxygenated VOC suggests that oxygenated VOC contribute an additional 20% to the overall VOC burden. The use of a fast olefin sensor (FOS) for continuous measurement of olefin concentrations was demonstrated, but only half of the FOS signal could be accounted for in terms of olefins identified from canister samples.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0317 Chemical kinetic and photochemical properties
DE: 0345 Pollution--urban and regional (0305)
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting