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  • 1. C ombinedA erosolT rajectoryT ool, CATT Status Report on Tools Development and Use Project supported by the Inter-RPO Data Analysis Workgroup Project Manager: Sirpil Kayin, MARAMA Technical Project Officer: Rich Poirot, Vermont DEP Project performed by CAPITA, Rudolf Husar, PI July 2004 Trajectory Browser Kitty: Simple CATT CATT Transport Analyzer

2. Next Process Next Process Aerosol Data Collection IMP. EPA Aerosol Sensors Integration VIEWS Integrated AerData AEROSOLWeather Data Assimilate NWS Gridded Meteor. Trajectory ARL Traject.Data TRANSPORT TrajData Cube Aggreg. Traject. AerDataCube CATT Aggreg.Aerosol CATT-In CAPITA CATT-In CAPITA 3. New CATT Components:

  • Trajectory Aggregator Tool Inputs:
    • Receptor location.Single location; multiple receptors; weighed multi-site
    • Receptor times.Time range for each site
    • Temporal filter/weight conditions.Date range; specific dates; weights for each date
    • Trajectory input files.Pre-computed or on the fly calculated (e.g. HYSPLIT, ATAD etc)
    • Trajectory aggregation metrics.Endpoint counts, residence time, incr. probability
  • TAT Output:
    • XMLGrid, GIS layers, ASCII point
    • Renderedcontour imagesof transport metric

Chemical filter Accomplished through queries to chemical data sets. The output a list of qualified dates for a specific location (s). Trajectory aggregator Receives the list of dates for a specific location Performs the trajectory/restime aggregation Yield transport pattern for specific receptor location and chemical filter conditions. 4. The CATT Family

  • IMPROVE-ATAD Trajectory Browser Tool
    • This tool is used to find the airmass history foran IMPROVE site and time
  • TrajAgg - Trajectory Aggregator ( Grid )
    • Uses user-defined filter (locations and dates) to aggregate trajectories
  • Kitty Simple Combined Aerosol Trajectory Tool
    • Limited filtering and aggregation for IMPROVE-ATAD data
  • CATT- Combined Aerosol Trajectory Tool (Threshold, Percentile, Ratio)
    • Full featured chemical-transport exploration tool

5. IMPROVE-ATAD Trajectory Browser Tool This tool is used to find the airmass history for arbitrary location over the US and time

  • Backtrajectory browser for IMPROVE sampling sites.Click on location and date.
  • Fir a given sampling date, the backtrajectories for multiple receptor sites can be retrieved. The sites are specified in the URL, e.g.:

http:// webapps . datafed .net/ dvoy _services/ datafed . aspx ?view= atad _map&loc_code=SALM+SAMA+SHEN+UPBU 6. TrajAgg- Trajectory Aggregator User Defined Filter This tool performs weighed trajectory aggregation using user-supplied filter The filter can be submitted as a comma separated CSV table, shown here The aggregator returns either trajectory or weighed contour plots 7. Kitty Simple CATT Combined Aerosol Trajectory Tool

  • All the VIEWS chemical parameters available for filtering
  • Filter settable as Parameter-Operator-Threshold, e.g. SOILf >20 or SO4 30 ug/m3 Dust > 1.8 ug/m3 Dust > 3.7 ug/m3 Dust > 1.8 ug/m3 Dust > 15 ug/m3 Dust > 7.5 ug/m3 14. SO4 Multi-Site CATT 15. Incremental Probability Maps Upper 10 percentile, Big Bend, Jun, Jul Aug
    • Incremental Transport Probabilities for Big Bend indicate southerly transport of species, except sulfate
    • Conspicuously, in the summer, nitrate is also transported from the south

    16. Incremental Probability Maps Upper 10 percentile, Brigantine, Jun, Jul Aug

    • Incremental Transport Probabilities for Brigantine indicate westerly transport of species
    • Soil is preferentially transported from southwest; nitrate is transported from the northwest

    17. Project Status: Extensions to the CATTAnalysis Tool

    • Connectivity to VIEWS chemical datasets
      • Done
    • Flexible import of pre-calculated back-trajectory data
      • Done for ATAD, Nor done for HYSPLIT
    • Additional chemical filtering and trajectory aggregation algorithms
      • Done for some, may add some filters
    • Spatial interpolation and rendering (contouring) of point data
      • Done
    • CATT server hardware and software installation and maintenance
      • Done