HR: 15:10h
AN: A33F-07    [Abstracts]
TI: Comparison of Canadian Air Quality Forecast Models With Tropospheric Ozone Profile Measurements Above Mid-Latitude North America During the IONS/ICARTT Campaign: Evidence for Stratospheric Input
AU: * Tarasick, D W
EM: david.tarasick@ec.gc.ca
AF: Experimental Studies Research Division, MSC/Environment Canada, 4905 Dufferin Street, Downsview, ON M3H 5T4 Canada
AU: Moran, M
A33F-07 AF: Experimental Studies Research Division, MSC/Environment Canada, 4905 Dufferin Street, Downsview, ON M3H 5T4 Canada
AU: Thompson, A
A33F-07 AF: Department of Meteorology, 510 Walker Building, Pennsylvania State University, University Park, PA 16802 United States
AU: Carey-Smith, T
A33F-07 AF: Experimental Studies Research Division, MSC/Environment Canada, 4905 Dufferin Street, Downsview, ON M3H 5T4 Canada
AU: Rochon, Y
A33F-07 AF: Experimental Studies Research Division, MSC/Environment Canada, 4905 Dufferin Street, Downsview, ON M3H 5T4 Canada
AU: Bouchet, V
A33F-07 AF: Environmental Emergency Response Division, MSC/Environment Canada, 2121 TransCanada Highway, Dorval, QC H9P 1J3 Canada
AU: Cousineau, S
A33F-07 AF: Environmental Emergency Response Division, MSC/Environment Canada, 2121 TransCanada Highway, Dorval, QC H9P 1J3 Canada
AU: Cooper, O R
A33F-07 AF: Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado/NOAA Aeronomy Laboratory, 325 Broadway, Boulder, CO 80305 United States
AU: Oltmans, S J
A33F-07 AF: NOAA Climate Monitoring and Diagnostics Laboratory, 325 Broadway, Boulder, CO 80305 United States
AU: Witte, J C
A33F-07 AF: Science Systems and Applications, Inc., NASA Goddard Space Flight Center, Mail Code 613.3, Greenbelt, MD 20771 United States
AU: Forbes, G
A33F-07 AF: Meteorological Service of Canada, Sable Island, PO Box 622, Halifax CRO, Halifax, NS B3J 2R7 Canada
AU: Johnson, B J
A33F-07 AF: NOAA Climate Monitoring and Diagnostics Laboratory, 325 Broadway, Boulder, CO 80305 United States
AU: Merrill, J
A33F-07 AF: Graduate School of Oceanography, University of Rhode Island, South Ferry Road, Narragansett, RI 02882 United States
AU: Morris, G
A33F-07 AF: Department of Physics and Astronomy, Valparaiso University, Valparaiso, IN 46383 United States
AU: Newchurch, M J
A33F-07 AF: Atmospheric Science Department, University of Alabama in Huntsville, 320 Sparkman Drive, Huntsville, AL 35805 United States
AU: Schmidlin, F J
A33F-07 AF: Code 972, NASA/GSFC/Wallops Flight Facility , Wallops Island, VA 23337 United States
AU: Joseph, E
A33F-07 AF: Department of Physics and Astronomy, Howard University, 2355 6th St. NW, Washington, DC 20059 United States
AB: NASA, NOAA, Environment Canada, and several US universities pooled resources during the July-August 2004 ICARTT (International Consortium for Atmospheric Research on Transport and Transformation) study to launch daily ozonesondes at several sites across the eastern USA and Canada, under the IONS (INTEX Ozonesonde Network Study) program. At the same time, a number of air quality forecast models were run as part of ICARTT. Comparing IONS ozonesonde profiles with ozone fields from the Canadian CHRONOS and AURAMS models, we find that while the models show considerable skill at predicting ozone in the boundary layer and immediately above, they are unable to reproduce the typical profile of increasing mixing ratio with altitude. The discrepancy can be considerably reduced by assuming a downward flux of ozone from above the model lid. Estimates of the magnitude of this flux are compared with estimates of STE by other means.
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
DE: 3355 Regional modeling
DE: 3362 Stratosphere/troposphere interactions
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005