HR: 0800h
AN: A51D-0092    [Abstracts]
TI: Ozone Profiles Related to Meteorological Factors Over North America During Summer, 2004
AU: * Merrill, J T
EM: jmerrill@gso.uri.edu
AF: Graduate School of Oceanography, University of Rhode Island South Ferry Road, Narragansett, RI 02882-1197 United States
AU: Oltmans, S J
EM: samuel.j.oltmans@noaa.gov
AF: NOAA, Earth Science Research Laboratory (ESRL) Global Monitoring Division, 325 Broadway, Boulder, CO 80305 United States
AU: Johnson, B J
EM: bryan.johnson@noaa.gov
AF: NOAA, Earth Science Research Laboratory (ESRL) Global Monitoring Division, 325 Broadway, Boulder, CO 80305 United States
AU: Thompson, A M
EM: anne@met.psu.edu
AF: Meteorology Department, 510 Walker Building Pennsylvania State University, University Park, PA 16802 United States
AB: During the July-August, 2004 ICARTT (International Consortium for Atmospheric Research on Transport and Transformation) study an intensive, coordinated ozonesonde campaign was carried out over the US and southeastern Canada. We use daily, quasi-synoptic profiles from four sites in the IONS (INTEX Ozonesonde Network Study) data set: Trinidad Head, CA; Pellston, MI; Narragansett, RI; NOAA Ship Ron Brown, operating in the Gulf of Maine. We also make use of gridded meteorological fields at hourly intervals from the Rapid Update Cycle analyses of the National Centers for Environmental Prediction. The influence of nearby convective lofting on the tropospheric ozone profile is assessed using static stability parameter distributions and wind shear data. The focus is on a subset of the profiles where thermodynamic and wind data indicate that the gridded meteorological analysis is consistent with the observed distributions. The role of stratospheric influence in the frequently encountered cases of enhanced upper tropospheric O₃ is assessed using tropopause conformation, humidity and potential temperature data intercomparisons with meteorological analysis results, together with analysis of potential vorticity distributions. The relative importance of these factors will be contrasted with long-range transport in the context of large-scale meteorological systems.
UR: http://croc.gsfc.nasa.gov/intex/ions.html
DE: 0322 Constituent sources and sinks
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005