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CATT (Comparative Aerosol Trajectory Tool) CAPITA Web-based Tool for Ensemble Trajectory Analysis, MANE-VU & MW RPO funding support, Currently functional for evaluating 15 PMF & UNMIX Sources at 16 Sites. Plans to extend to all raw data for whole IMPROVE network!
CATT (Comparative Aerosol Trajectory Tool) CAPITA Web-based Tool for Ensemble Trajectory Analysis, MANE-VU & MW RPO funding support, Currently functional for evaluating 15 PMF & UNMIX Sources at 16 Sites
Plans to extend to all raw data for whole IMPROVE network!
Guess What PMF Source C3 at Acadia is (Hint: Composition is 42% Na)?
< Download Data
Open in ArcView > for additional data analysis & plotting
Residual Oil Sources are found Primarily at Northeastern sites and show Upwind Probability Fields which are “Local” and Strongly Convergent (“Greater NYC” area)
Wood Smoke Sources are Found in All Regions and show Upwind Probability Fields which are Both Local and more Distant and Strongly Divergent (Likely Combinations of RWC & Forest Fires?)
Northern New England Wood Smoke Sources are primarily Local New England and Eastern Canada
NE Wood Smoke influence is primarily Local in Winter (wood stoves) and is more Regional (& Canadian) in Summer (wild fires)
Secondary SO4 has common regional origins in NE, MA, SW
NE: ACAD, PMRC, LYBR; MA: WASH, SHEN, JARI; SE: GRSM, MACA
3 Toronto Coal Sources: Primary Coal (no secondaries), (NH4)2SO4 (and little else), Acidic SO4 & Secondary OC
While These 3 “Virtual Source Components” are uncorrelated, they all come predominantly from the same Upwind Region
High Incremental Probability Contours for Secondary Sulfate Sources: Toronto, Ont. (VT DEC UNMIX sources, HY-SPLIT trajectories) Washington DC (Battelle PMF source, extracted from CATT, ArcView)
SO2 Emissions & 9-Site Mean Probability for “2ndary Sulfate Sources”
Ammonium Nitrate at a wide range of Eastern Sites appears to be associated with transport from areas of high agricultural NH3 emissions
From Donna Kenski’s 14-site traj. Analysis
From NADP Precip. Chem.
Toronto Mobile Source influence is predominantly “Local” & Northerly, Coal Sources are predominantly “US Midwest” & Southerly, NH4NO3 is predominantly Westerly, Mixed Near/Far Emissions
However, despite the apparent important influence of agricultural NH3 emissions for highest concentrations of NH4NO3, note that there is also a moderately strong weekday increase in Toronto NO3, suggesting importance of local urban NOx or (I think) local NH3.
Highest Levels of “Crustal or Dust” Sources at several Eastern US sites are consistent with Sahara Dust influences, but…
5-day Trajectories (and limited grid coverage) are not sufficient for identifying Dust origins and only indicate latter part of transport route.