Abstract
Acid rain has become a major environmental concern, the current extent of which is illustrated in this paper. Maps of both pH and H+ deposition in precipitation have been developed for the continental United States by analyzing laboratory pH data from nine precipitation chemistry networks and two single stations spread across the continental United States and southern Canada during the late 1970's. Average laboratory pH values were obtained or calculated for approximately 100 stations, and isopleths of weighted mean pH and mean annual H+ deposition in precipitation were drawn. Results of this analysis show that in spite of a wide variety of collection methods and sampling intervals, there is remarkable uniformity in the average pH among the various stations. The northeastern United States continues to exhibit the most acidic precipitation, with remaining portions of the eastern United States, states along the western coastline and a pocket in central Colorado also experiencing acid precipitation.
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Wisniewski, J., Keitz, E.L. Acid rain deposition patterns in the continental United States. Water Air Soil Pollut 19, 327–339 (1983). https://doi.org/10.1007/BF00159594
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DOI: https://doi.org/10.1007/BF00159594