Abstract
From 1978 through 1989, a wet-onlyprecipitation collector operated for the NationalAtmospheric Deposition Program, an independantwet-only collector, and a bulk precipitation collectorwere co-located at the Hubbard Brook ExperimentalForest (HBEF) in central New Hampshire. A secondbulk precipitation collector was maintained at anotherlocation within the HBEF. There were statisticallysignificant differences between the chemistry fromco-located wet-only collections for Ca2+,K+, NH4 +, pH, and NO3 -. Thedifferences for K+ and pH though statisticallysignificant were very small but consistant. Thedifferences for Ca2+ were related to earlycontamination problems, and differences inNH4 + and NO3 - were related toepisotic events. Bulk precipitation was significantlyricher in K+ than wet-only precipitation. Therewere no differences for any ions between the bulkcollections at the two locations. While there wereminor differences, after 1981 when the contaminationproblems had been resolved, data from all collectorsat all locations adequately characterized theprecipitation chemistry of the site.
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Martin, C.W., Likens, G.E. & Buso, D.C. Comparison of Long-Term Precipitation Chemistry Measurements at the Hubbard Brook Experimental Forest, New Hampshire. Water, Air, & Soil Pollution 120, 359–379 (2000). https://doi.org/10.1023/A:1005258723010
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DOI: https://doi.org/10.1023/A:1005258723010