National Trends Network
The NTN provides a long-term record of the acids, nutrients, and base cations in U.S. precipitation.
Mercury Deposition Network
The MDN provides data on the geographic distributions and trends of mercury in precipitation.
Atmospheric Integrated Research Monitoring Network
The AIRMoN reports daily measurements for studying and modeling atmospheric processes.
Tracking Atmospheric Deposition and its Effects
The NADP has been monitoring precipitation chemistry since 1978.
Atmospheric Mercury Network
The AMNet reports atmospheric mercury concentrations for determination of mercury dry deposition.
Ammonia Monitoring Network
The AMON measures air concentration of ammonia using passive monitors
UPCOMING EVENTS
- NADP 2021 Fall Meeting and Symposium
Oct. 25-29, 2021 - Acid Rain 2020
April 18-April 21,2023
Niigata City, Japan
RECENT NEWS
- A New fact sheet on Improving Total Nitrogen Deposition Budgets is available
- Archive Sample availability
- New Sample Shipping Address!
- Bucket to Bag FAQ
- NADP establishes charitable foundation
- The TDep Nr Deposition White Paper is now available
- Litterfall Mercury Monitoring is NADP's latest initiative.
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