Hubbard Brook Experimental Forest

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Line graph of hydrogen ion concentration in Hubbard Brook precipitation from 1963 to 2007, declining overall from about 75 to 30 equivalents per liter, with a peak near 95 in 1970.

Hubbard Brook Experimental Forest

forest, New Hampshire, United States

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acid rain
History
…North America is from the Hubbard Brook Experimental Forest in New Hampshire, U.S., where H⁺ concentration in precipitation declined by about 86 percent from the mid-1960s through 2016. Similar trends were also reflected in data collected at measuring stations located across the eastern United States, which reported a decrease of…
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…North America is from the Hubbard Brook Experimental Forest in New Hampshire, U.S., where H⁺ concentration in precipitation declined by about 86 percent from the mid-1960s through 2016. Similar trends were also reflected in data collected at measuring stations located across the eastern United States, which reported a decrease of…
Read More