HR: 17:00h
AN: A14A-05    [Abstracts]
TI: Nitrogen Oxides (NOy) in the Mexico City Metropolitan Area
AU: * Dunlea, E
EM: edward.dunlea@colorado.edu
AF: Departments of Earth, Atmospheric and Planetary Sciences and of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
AU: * Dunlea, E
EM: edward.dunlea@colorado.edu
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder, UCB 216, Boulder, CO 80309 United States
AU: Volkamer, R
AF: Departments of Earth, Atmospheric and Planetary Sciences and of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
AU: Johnson, K S
AF: Departments of Earth, Atmospheric and Planetary Sciences and of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
AU: Zavala, M
AF: Departments of Earth, Atmospheric and Planetary Sciences and of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
AU: Molina, L T
AF: Departments of Earth, Atmospheric and Planetary Sciences and of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
AU: Molina, M J
AF: Departments of Earth, Atmospheric and Planetary Sciences and of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
AU: Lamb, B
AF: Washington State University, Department of Civil & Environmental Engineering, loan Hall 101, Spokane Street, Pullman, WA 99164-2910 United States
AU: Allwine, E
AF: Washington State University, Department of Civil & Environmental Engineering, loan Hall 101, Spokane Street, Pullman, WA 99164-2910 United States
AU: Rogers, T
AF: Montana State University, Department of Chemistry, P.O. Box 173400, Bozeman, MT 59717 United States
AU: Knighton, B
AF: Montana State University, Department of Chemistry, P.O. Box 173400, Bozeman, MT 59717 United States
AU: Grutter, M
AF: Centro de Ciencias de la Atmosfera, Universidad Nacional Aut¢noma de M‚xico, Ciudad Universitaria, Delegaci¢n Coyoac n, Mexico City, 04510 Mexico
AU: Gaffney, J S
AF: Argonne National Laboratory, Environmental Research Division, Bldg. 203/ER, Argonne, IL 60439 United States
AU: Marley, N A
AF: Argonne National Laboratory, Environmental Research Division, Bldg. 203/ER, Argonne, IL 60439 United States
AU: Herndon, S C
AF: Aerodyne Research, Inc., 45 Manning Rd., Billerica, MA 01821-3976 United States
AU: Zahniser, M S
AF: Aerodyne Research, Inc., 45 Manning Rd., Billerica, MA 01821-3976 United States
AU: Jayne, J
AF: Aerodyne Research, Inc., 45 Manning Rd., Billerica, MA 01821-3976 United States
AU: Shorter, J H
AF: Aerodyne Research, Inc., 45 Manning Rd., Billerica, MA 01821-3976 United States
AU: Wormhoudt, J C
AF: Aerodyne Research, Inc., 45 Manning Rd., Billerica, MA 01821-3976 United States
AU: Kolb, C E
AF: Aerodyne Research, Inc., 45 Manning Rd., Billerica, MA 01821-3976 United States
AB: Measurements of total nitrogen oxides (NOy) and numerous individual NOy species were carried out over a five-week period in the spring of 2003 as part of a large field campaign in the Mexico City Metropolitan Area (MCMA). The overall budget of the individual NOy components and their evolution during typical diurnal cycles are described. The role of HNO3 and its interaction with the aerosol phase are highlighted. NOy observations are used to evaluate a chemical transport model (CAMx). Comparisons with NOy levels and speciation from previous field campaigns are discussed as insights into the evolving air quality conditions within the MCMA.
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
DE: 0368 Troposphere--constituent transport and chemistry
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting