National Atmospheric Deposition Program
About NADP
Networks
Maps & Data
Publications
Committees & Meetings
New Issues
Monitoring our changing Chemical Climate.
The NADP has been monitoring precipitation chemistry since 1978.
› Learn more about NADP's history.
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.
NADP Meetings
Fall 2009 Annual Meeting and Scientific Symposium
October 6-8, 2009 Saratoga Springs, NY
Recent News
Presentations from the 2008 Annual Meeting and Scientific symposium are
now online.
NADP is modernizing its rain gages.
Map Access
Data Access
1. Select a Network
NTN
MDN
AIRMoN
2. Select a Map Type
Concentration
Deposition
Precipitation
Site Map
3. Select an Analyte
phLab
phField
SO4
NO3
NH4
Ca
Mg
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Na
Cl
Total Inorganic N
Total Hg
4. Select a Year
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