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.)