Evidence for decrease in atmospheric sulfur burden in the Eastern United States caused by reduction in SO2 emissions

Details Evidence for decrease in atmospheric sulfur burden in the Eastern United States caused by reduction in SO2 emissions Evidence for decrease in atmospheric sulfur burden in the Eastern United States caused by reduction in SO2 emissions

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25..967h&link_type=abstract

Geophysical Research Letters, Volume 25, Issue 7, p. 967-970

Physics

11

Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Pollution-Urban And Regional

Scientific paper

We report aerosol SO42- measurements from 1979 to 1996 at Whiteface Mountain located in the Adirondack Mountains and from 1983 at Mayville, in western New York State. From 1981 to 1991 SO42- decreased, ~3% per year. Reductions of nearly 47% in SO42- and total sulfur concentrations at Whiteface Mountain, and about 30% at Mayville, were observed during 1995 to 96 compared with the mean levels during 1981-91, while the upwind SO2 emissions in the Midwestern United States decreased by 36%. Linear relationships between SO42- and total sulfur concentrations and the SO2 emissions were observed for the entire period. The mean ratio of SO42- concentrations to SO2 emissions for the eighteen year period at Whiteface Mountain is 0.11+/-0.014 and for thirteen years at Mayville is 0.23+/-0.014μgSO42-/m3per103 metric tons SO2 emitted per day. The data suggest that the observed relationship could be used to predict decreases in atmospheric SO42- levels based on SO2 emissions several years hence. Furthermore, it appears feasible to develop an empirical source-receptor relationship if similar data were acquired from a network of strategically located sampling sites.

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