http://nadp.sws.uiuc.edu/US federal-state-NGO cooperative effort operating a national precipitation monitoring network to observe geographic and temporal trends in acidity, mercury, and other attributes. Includes data, maps, and meeting announcements.Air Quality > Acid DepositionMonitoring our changing Chemical Climate.
The NADP has been monitoring precipitation chemistry since 1978.
The NTN provides a long-term record of the acids, nutrients, and base cations in U.S. precipitation.
The MDN provides data on the geographic distributions and trends of mercury in
For detailed information much better to visit the website...NationalAtmosphericDepositionProgram
About EPA efforts reduce electric utilities' emissions of sulfur dioxide and nitrogen oxides, the pollutants responsible for acid deposition. The program includes a system of tradable SO2 emissions allowances.
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