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Status of the Development of a Tropospheric Ozone Product from OMI Measurements

Status of the Development of a Tropospheric Ozone Product from OMI Measurements. Jack Fishman 1 , Jerald R. Ziemke 2,3 , Sushil Chandra 2,3 , Amy E. Wozniak 1,4,5 and John K. Creilson 1,4 1 NASA Langley Research Center 2 NASA Goddard Space Flight Center

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Status of the Development of a Tropospheric Ozone Product from OMI Measurements

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  1. Status of the Development of a Tropospheric Ozone Product from OMI Measurements Jack Fishman1, Jerald R. Ziemke2,3, Sushil Chandra2,3, Amy E. Wozniak1,4,5 and John K. Creilson1,4 1NASA Langley Research Center 2NASA Goddard Space Flight Center 3Goddard Earth Science and Technology Center, University of Maryland Baltimore County 4SAIC International Inc. 5Also at NASA Goddard Space Flight Center 10th OMI Science Team Meeting KNMI DeBilt, Netherlands 16 June 2005

  2. Heritage of Tropospheric Ozone from Satellites Separate Stratosphere from Troposphere to Compute Tropospheric Ozone Residual (TOR)

  3. From Original Proposal Other Data Sets Are Required To Separate Tropospheric Ozone from Total Ozone Measurements • Previous Studies • SAGE: Good Vertical Resolution; Poor Spatial Coverage • HALOE: Good Vertical Resolution; Poor Spatial Coverage • MLS: Vertical Resolution Only >68 mb; Relatively Good Spatial Coverage • Only One Archived Layer below 100 mb • SBUV: Poor Vertical Resolution; Good Spatial Coverage Archived Layers: 1000–253 mb; 253-126 mb; 126-63 mb Stratospheric Fields Generated from 5 Days of Data • Tropopause Heights: Archived Gridded Data Sets 2.5° x 2.5° • For Aura Studies • HIRDLS: 4° latitude x 5° longitude • Tropopause Heights: Use Assimilated Data from DAO • Possible Use of OMI Vertical Profiles Averaged Over Each Orbit • Derive Tropospheric Ozone Using Convective Cloud Differential Methodology

  4. SAGE/TOMS Tropospheric Ozone Residual (TOR) Seasonal Depictions Dobson Units

  5. Seasonal Depictions of Climatological Tropospheric Ozone Residual (TOR) 1979-2000 March - May December - February June - August September - November Dobson Units (DU) from Fishman, Wozniak, Creilson, Atmos. Chem. Phys., 3, 2003

  6. Comparison of TOMS/SAGE TOR with TOMS/SBUV TOR: Regional Enhancements Not Previously Seen Now Found TOMS/SAGE TOR: June-July-August Climatology (1979-1991) TOMS/SBUV TOR: June-July-August Climatology (1979-1991) Dobson Units (DU)

  7. Measurement of Ozone Precursors such as Nitrogen Dioxide (NO2) on Aura will Provide Important Information that Should Lead to a New Understanding of the Origin and Distribution of Global Ozone (Smog) Pollution Tropospheric Ozone Residual (Jun-Aug Climatology) Integrated Tropospheric Ozone (Dobson Units) Fishman et al. [2003, ACP, 3, 1453]

  8. Other Data Sets Are Required To Separate Tropospheric Ozone from Total Ozone Measurements • Previous Studies • SAGE: Good Vertical Resolution; Poor Spatial Coverage • HALOE: Good Vertical Resolution; Poor Spatial Coverage • MLS: Vertical Resolution Only >68 mb; Relatively Good Spatial Coverage • Only One Archived Layer below 100 mb • SBUV: Poor Vertical Resolution; Good Spatial Coverage Archived Layers: 1000–253 mb; 253-126 mb; 126-63 mb Stratospheric Fields Generated from 5 Days of Data • Tropopause Heights: Archived Gridded Data Sets 2.5° x 2.5° • For Aura Studies • HIRDLS: 4° latitude x 5° longitude • Tropopause Heights: Use Assimilated Data from DAO • Possible Use of OMI Vertical Profiles Averaged Over Each Orbit

  9. HIRDLS Daily Profile Coverage Will Provide Sufficient Information to Derive 3-Dimensional Stratospheric Ozone Distribution Down to 1 km Below Tropopause Current SBUV Daily Resolution

  10. Other Data Sets Are Required To Separate Tropospheric Ozone from Total Ozone Measurements • Previous Studies • SAGE: Good Vertical Resolution; Poor Spatial Coverage • HALOE: Good Vertical Resolution; Poor Spatial Coverage • MLS: Vertical Resolution Only >68 mb; Relatively Good Spatial Coverage • Only One Archived Layer below 100 mb • SBUV: Poor Vertical Resolution; Good Spatial Coverage Archived Layers: 1000–253 mb; 253-126 mb; 126-63 mb Stratospheric Fields Generated from 5 Days of Data • Tropopause Heights: Archived Gridded Data Sets 2.5° x 2.5° • For Aura Studies • HIRDLS: 4° latitude x 5° longitude HIRDLS Data Not Available: Using MLS Data • Tropopause Heights: Use Assimilated Data from DAO • Possible Use of OMI Vertical Profiles Averaged Over Each Orbit

  11. Daily Product Derived from OMI/MLS (Plotted as average volume mixing ratio)

  12. Monthly Product Derived from OMI/MLS (Plotted as average volume mixing ratio)

  13. Other Data Sets Are Required To Separate Tropospheric Ozone from Total Ozone Measurements • Previous Studies • SAGE: Good Vertical Resolution; Poor Spatial Coverage • HALOE: Good Vertical Resolution; Poor Spatial Coverage • MLS: Vertical Resolution Only >68 mb; Relatively Good Spatial Coverage • Only One Archived Layer below 100 mb • SBUV: Poor Vertical Resolution; Good Spatial Coverage Archived Layers: 1000–253 mb; 253-126 mb; 126-63 mb Stratospheric Fields Generated from 5 Days of Data • Tropopause Heights: Archived Gridded Data Sets 2.5° x 2.5° • For Aura Studies • HIRDLS: 4° latitude x 5° longitude HIRDLS Data Not Available: Using MLS Data • Tropopause Heights: Use Assimilated Data from DAO Use Ozone from NOAA’s GFS (Global Forecast System) Model • Possible Use of OMI Vertical Profiles Averaged Over Each Orbit

  14. OMI on Aura Total O3 from OMI Calculate TOR Product at t0 GFS Model Run at t0-24 to Forecast Stratospheric Column O3 for t0 Providing Guidance Products to Air Quality Forecasters TOR at t0 Isolate “Hot Spots” and Run Trajectory Ensemble with NOAA’s HYSPLIT SCO at t0-24 SCO at t0 Generate Guidance Product for t0+24 Disseminate Guidance Product to Air Quality Forecasters TOR at t0+24

  15. OMI Total Ozone 5-8 Nov 2004

  16. GFS Model Output SCO (100 -10 hPa) 4-8 Nov 2004

  17. Calculated TOR 4-8 Nov 2004

  18. HYSPLIT Forward Trajectories Show High TOR on 6-7 November May Have Come from Fire Emissions Several Days Earlier TOR - 6 Nov TOR - 7 Nov Preliminary Results Encouraging! Much More Analysis Still Needed! MODIS Aerosol 5 Nov

  19. Comparison of TOR Products: OMI/GFS TOR OMI/MLS TOR

  20. Weekly OMI/GFS TOR for March

  21. Weekly OMI/GFS TOR for April

  22. Weekly OMI/GFS TOR for May

  23. Daily OMI/GFS TOR for May

  24. Use of Complete GFS Product Should Improve TOR Current Calculations Use O3 from GFS 10hPa-100hPa Public Release GFS + Climatology Native GFS

  25. Other Data Sets Are Required To Separate Tropospheric Ozone from Total Ozone Measurements • Previous Studies • SAGE: Good Vertical Resolution; Poor Spatial Coverage • HALOE: Good Vertical Resolution; Poor Spatial Coverage • MLS: Vertical Resolution Only >68 mb; Relatively Good Spatial Coverage • Only One Archived Layer below 100 mb • SBUV: Poor Vertical Resolution; Good Spatial Coverage Archived Layers: 1000–253 mb; 253-126 mb; 126-63 mb Stratospheric Fields Generated from 5 Days of Data • Tropopause Heights: Archived Gridded Data Sets 2.5° x 2.5° • For Aura Studies • HIRDLS: 4° latitude x 5° longitude HIRDLS Data Not Available: Using MLS Data • Tropopause Heights: Use Assimilated Data from DAO Using Information from NOAA’s GFS • Possible Use of OMI Vertical Profiles Averaged Over Each Orbit Not Tried Yet

  26. Validation of Measurements Challenging Stratospheric Column Ozone Derived from SBUV Agrees with SCO Derived from SAGE Profiles and with Available Ozonesonde Measurements:

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