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Acid Rain

Hubbard Brook scientists discovered acid rain in North America by taking meticulous, long-term measurements of rain and snow. Scientists continue to document acid rain's damaging effects and track recovery linked to pollution reduction efforts.

Driscoll, C.T., G.B. Lawrence, A.J. Bulger, T.J. Butler, C.S. Cronan, C. Eagar, K.F. Lambert, G.E. Likens, J.L. Stoddard and K.C. Weathers. 2001. Acidic deposition in the northeastern U.S.: sources and inputs, ecosystems effects, and management strategies. BioScience 51:180-198.
Dr. Charles Driscoll
Photo of a rain gauge for measuring precipitation quantity (left) and a wet-dry collectors for measuring precipitation chemistry as part of the National Atmospheric Deposition Program (NADP).
Hubbard Brook website
Relationships between annual volume-weighted concentrations of sulfate and nitrate in bulk precipitation at the Hubbard Brook Experimental Forest, NH and emissions of sulfur dioxide and nitrogen oxides, respectively, from the airshed of the northeastern U.S. defined from 24 hr back-trajectory analysis. Data are from G.E. Likens.
Butler et al. 2001



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