NADP Networks

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National Trends Network (NTN)

The NTN provides a long-term record of the acids, nutrients, and base cations in U.S. precipitation.

Learn more about the NTN

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Mercury Deposition Network (MDN)

The MDN provides data on the geographic distributions and trends of mercury in precipitation.

Learn more about the MDN

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Ammonia Monitoring Network (AMoN)

The AMON measures air concentration of ammonia using passive monitors

Learn more about the AMoN

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Atmospheric Mercury Network (AMNet)

The AMNet reports atmospheric mercury concentrations for determination of mercury dry deposition.

Learn more about the AMNet

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Mercury Litterfall Network (MLN)

The MLN provides an estimate of an important component of mercury dry deposition to a forested landscape.

Learn more about the MLN