Reactive nitrogen chemistry in Mexico City outflow тА" a unique case

HR: 09:04h
AN: A31E-05 [Abstracts]
TI: Reactive nitrogen chemistry in Mexico City outflow тА" a unique case
AU: * Flocke, F
EM: ffl@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Weinheimer, A
EM: wein@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Hodzic, A
EM: alma@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Emmons, L
EM: emmons@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: McKenna, D
EM: danny@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Tie, X
EM: xxtie@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Madronich, S
EM: sasha@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Zheng, W
EM: wengang@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Montzka, D
EM: montzka@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Knapp, D
EM: knapp@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Campos, T
EM: campos@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Apel, E
EM: apel@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Hills, A
EM: hills@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Mauldin, L
EM: mauldin@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Cantrell, C
EM: cantrell@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Anderson, R
EM: rsa@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Kosciuch, E
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Jimenez, J
EM: jose.jimenez@colorado.edu
AF: CIRES - University of Colorado, 216 UCB, Boulder, CO 80309, United States
AU: DeCarlo, P
EM: peter.decarlo@colorado.edu
AF: CIRES - University of Colorado, 216 UCB, Boulder, CO 80309, United States
AU: Dunlea, E
EM: edward.dunlea@colorado.edu
AF: CIRES - University of Colorado, 216 UCB, Boulder, CO 80309, United States
AU: Aiken, A
EM: allison.aiken@colorado.edu
AF: CIRES - University of Colorado, 216 UCB, Boulder, CO 80309, United States
AU: Atlas, E
EM: eatlas@rsmas.miami.edu
AF: RSMAS - University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149, United States
AU: Blake, D
EM: dblake@uci.edu
AF: University of California, Irvine, Dept. of Chemistry 570 Rowland Hall, Irvine, CA 92697, United States
AU: Meinardi, S
EM: smeinard@uci.edu
AF: University of California, Irvine, Dept. of Chemistry 570 Rowland Hall, Irvine, CA 92697, United States
AU: Baker, A
EM: abaker@uci.edu
AF: University of California, Irvine, Dept. of Chemistry 570 Rowland Hall, Irvine, CA 92697, United States
AU: Beyersdorf, A
EM: abeyersdorf@uci.edu
AF: University of California, Irvine, Dept. of Chemistry 570 Rowland Hall, Irvine, CA 92697, United States
AU: Karl, T
EM: tomkarl@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Clarke, T
EM: tclarke@soest.hawaii.edu
AF: University of Hawaii, Department of Oceanography 1000 Pope Road, Honolulu, HI 96822, United States
AU: Shinozuka, Y
EM: yohei@hawaii.edu
AF: University of Hawaii, Department of Oceanography 1000 Pope Road, Honolulu, HI 96822, United States
AU: McNaughton, C
EM: cameronm@soest.hawaii.edu
AF: University of Hawaii, Department of Oceanography 1000 Pope Road, Honolulu, HI 96822, United States
AU: Zhou, J
EM: jczhou@hawaii.edu
AF: University of Hawaii, Department of Oceanography 1000 Pope Road, Honolulu, HI 96822, United States
AU: Springston, S
EM: srs@bnl.gov
AF: Brookhaven National Laboratory, Atmospheric Sciences Division Building 815E 75 Rutherford Drive, Upton, NY 11973, United States
AU: Skamarock, W
EM: skamaroc@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, CO 80305, United States
AU: Fast, J
EM: Jerome.Fast@pnl.gov
AF: Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99352, United States
AU: Voss, P
EM: pvoss@email.smith.edu
AF: Smith College, 51 College Lane, Northampton, MA 01063, United States
AU: Zaveri, R
EM: Rahul.Zaveri@pnl.gov
AF: Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99352, United States
AU: Wennberg, P
EM: wennberg@gps.caltech.edu
AF: CalTech, Div. of Geological and Planetary Sciences MS 150-21, Pasadena, CA 91125, United States
AU: Crounse, J
EM: crounjd@caltech.edu
AF: CalTech, Div. of Geological and Planetary Sciences MS 150-21, Pasadena, CA 91125, United States
AU: McCabe, D
EM: dmcc@gps.caltech.edu
AF: CalTech, Div. of Geological and Planetary Sciences MS 150-21, Pasadena, CA 91125, United States
AB: The chemistry and fate of reactive nitrogen emitted from Mexico City is examined. Measurements of NOx, NOy, PANs, alkyl nitrates, HNO₃, and particulate nitrate were made on board the NCAR/NSF C-130 aircraft during the 2006 MILAGRO campaign. Near- and far-field outflow from the Mexico City metropolitan area was probed by the C-130 ranging from city overflights to a distance of 1000 km from the city. Reactive nitrogen and CO measurements made on board the DOE G-1 aircraft are also used. In addition, Mexico City outflow was successfully tagged by two radio controlled CMET Balloons and the same air was measured on two consecutive days during the March 18/19 outflow event. The reactive nitrogen data is examined with regard to NOy partitioning, ozone formation efficiency, and the ultimate fate of NOy, as a function of time and distance from the city. The NOx sequestration chemistry is examined using the WRF-Chem model. Because of the unique conditions in Mexico City with regard to altitude and climate as well as the high particle loading in the area the chemistry in the Mexico City outflow is very different compared to other mega-cities such as New York City. These differences and the resulting impacts on the region around the city will be discussed.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
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: 2007 Fall Meeting