HR: 13:55h
AN: A53C-02    [Abstracts]
TI: Global Distribution of the Ozone-CO Correlation from TES and Comparison to the GEOS-CHEM Model
AU: * Zhang, L
EM: linzhang@fas.harvard.edu
AF: Harvard University, 29 Oxford St., Cambridge, MA 02138 United States
AU: Jacob, D
EM: djacob@fas.harvard.edu
AF: Harvard University, 29 Oxford St., Cambridge, MA 02138 United States
AU: Logan, J
EM: jal@io.as.harvard.edu
AF: Harvard University, 29 Oxford St., Cambridge, MA 02138 United States
AU: Turquety, S
EM: turquety@fas.harvard.edu
AF: Harvard University, 29 Oxford St., Cambridge, MA 02138 United States
AU: Bowman, K
EM: kevin.bowman@jpl.nasa.gov
AF: Jet Propulsion Laboratory / California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Li, Q
EM: Qinbin.Li@jpl.nasa.gov
AF: Jet Propulsion Laboratory / California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Worden, H
EM: Helen.Worden@jpl.nasa.gov
AF: Jet Propulsion Laboratory / California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AB: The Tropospheric Emission Spectrometer (TES) aboard the EOS Aura satellite provides global collocated measurements of ozone and CO in the troposphere. The resulting information on ozone-CO correlations offers constraints on the sources and transport of tropospheric ozone. We use TES ozone and CO observations in different seasons to quantify these correlations, and to interpret them with the GEOS-CHEM chemical transport model driven by assimilated meteorological observations. Preliminary results for November 2004 show strong ozone-CO correlations over the tropical Pacific in both TES and GEOS-CHEM, with dO3/dCO ratios larger than 0.6 mol mol-1 in the middle troposphere over the equatorial Pacific and South Pacific, indicating significant combustion influence on ozone in these particularly remote regions of the world. We find that the correlation over the equatorial Pacific is due to Eurasian industrial pollution transported around the Pacific High and into the trade winds, producing a tropical "river of pollution" from the northeastern to the western equatorial Pacific. The South Pacific correlation appears due to biomass burning effluents transported by the prevailing westerly winds at subtropical latitudes. Model sensitivity simulations will be presented to identify the contributions of different sources to the ozone-CO correlation.
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005