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http://capitawiki.wustl.edu/index.php/20041028_Combined_Aerosol_Trajectory_Tool%2C_CATT:Transport_Analyzer_for_RPO_Analysts
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Combined Aerosol Trajectory Tool, CATT
Transport Analyzer for RPO Analysts
R. B. Husar and K. Höijärvi, Washington University, St. Louis
R.L. Poirot, Vermont DEC AP, Waterbury, Vermont
S. Kayin, MARAMA, Baltimore,
K.A. Gebhart, B.A. Schichtel, W.C. Malm NPS/CIRA, Fort Collins
Trajectory Browser Kitty: Simple CATT CATT Transport Analyzer
Next Process
Next Process
Why? How?
When? Where?CATT: A Community Tool!
Part of an Analysis Value Chain
Aerosol Data
Collection IMP. EPA
Aerosol Sensors
Integration VIEWS
Integrated AerData
AEROSOL
Weather Data
Assimilate NWS
Gridded Meteor.
Trajectory ARL
Traject.Data
TRANSPORT
TrajData Cube
Aggreg. Traject.
AerData Cube
CATT
Aggreg.Aerosol
CATT-In CAPITA
CATT-In CAPITA
There!
Not There! Further Analysis
GIS
Grid Processing
Emission
Comparison
CATT Components
Trajectory Aggregator Tool (TAT). Receives date-location pairs
Performs the trajectory extraction
Aggregation (e.g. residence time)
Outputs spatial transport pattern
Chemical Filter Tool (CFT). Queries to chemical data sets.Outputs “qualified” date-location pairs.
Chemical Filter Tool
Trajectory Aggregator Tool
IMPROVE-ATAD Trajectory Browser Tool
• 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
Trajectory Weights: Concentration & Age
Uncertainty potential further away
Kitty – Simple CATT
• All the VIEWS chemical parameters available for filtering
Guadalupe
Soilf > 5
Fine SOIL transport at decreasing concentration limit
Weight by 1 Calc high Percent days
Dust > 30 ug/m3
Dust > 1.8 ug/m3Dust > 3.7 ug/m3 Dust > 1.8 ug/m3
Dust > 15 ug/m3 Dust > 7.5 ug/m3
Origin of Sodium (Sea Salt): Oceans
Incremental Transport Probability Analysis (Poirot)
• Red - regions of high transport probability• Blue - regions of low transport probability
Upper Buffalo
IMPROVE Site
Backtrajectories for top
10 percentile Soil, Jun, Jul, Aug
Backtrajectories for all days, Jun, Jul, Aug
Incremental Transport Probability, Jun, Jul, Aug1. Trajectories for top 10 percent
SOILf are calculated2. Trajectories for all days are
calculated3. Trajectory endpoints gridded
A B
(A-B)
Big Bend Incremental Probability Maps Upper 10 percentile, Big Bend, Jun, Jul Aug
• Incremental Transport for Big Bend indicate southerly transport of species, except sulfate
• Conspicuously, in the summer, nitrate is also transported from the south
PMFine ammSO4 SOILf
OCf ECf ammNO3
Brigantine Incremental Probability Maps Upper 10 percentile, Brigantine, Jun, Jul Aug
Incremental Transport Probabilities for Brigantine indicate westerly transport of speciesSoil is preferentially transported from southwest; nitrate is transported from the northwest
PMFinePMFine ammSO4 SOILf
OCf ECf ammNO3
CATT Status:
Trajectory Browser, Aggregator, Kitty is functional now
Full CATT ready for testing/tutorial/use in November
CATT Future:• Add Additional Ensemble Trajectory Metrics
• Update as new Traj & Aerosol data (Kristi Gebhart has just updated ATADs to 2003
• Add more aerosol (STN) & trajectory data (Kristi cranked out ATADs for STN– triple site density)!!
•Continue cooperation of RPOs with & other DataFed.Net Partners (NSF, NASA, EPA, etc.)