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.
Atmospheric Mercury Network
The AMNet reports atmospheric mercury concentrations for determination of mercury dry deposition.
NADP Meetings
Fall 2010 Annual Meeting and Scientific Symposium
October 19-21, 2010
Lake Tahoe, CA
Spring 2010 Interim Subcommittee Meetings
April 20-22, 2010
Memphis, TN
Recent News
The Atmospheric Mercury Network (
AMNet
) is NADP's newest network.
Presentations from the 2009 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
K
Na
Cl
Total Inorganic N
Total Hg
4. Select a Year
1994
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2006
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2008
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