PPT Slide

HY-SPLIT / NGM Trajectories arriving

at 3 AM for Underhill, Vermont

Day 1 12/23/89 Yellow

Day 2 11/04/89 Green

Day 3 2/04/89 Red

Day 4 3/22/89 Purple

Noranda

Sudbury

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We took another look at our HY-SPLIT trajectories, in this case calculating them for arrival times at 3 AM (instead of 3 PM) at Underhill, VT on days when 24 hour levels of Arsenic (and As/Se ratios) were high. At this point, were pretty confused about whether Noranda or Sudbury (or both) was (were) the influential source(s).

If only we had some emissions data....