| Using
HYSPLIT back-trajectories for Source Region Identification
Lye Brook Wilderness Area ReceptorAir samples taken
at the Lye Brook Wilderness area in southern Vermont since the
late 1980's have given the Air Division a long-term database
of measured particle composition. The Planning Section has extensively
examined the variation over time of the levels of components
measured (such as Sulfur, Vanadium, Arsenic, Selenium and other
elements). By using back-trajectory models such as HYSPLIT
to determine where air flow into Vermont was coming from at
the time of measurements, it is possible to associate source
regions in the eastern U.S. and Canada as contributing to the
levels of these components which have been measured.
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Last Updated: 1/22/03
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Air Pollution Control Division 
dec calendar 
