National Atmospheric Deposition Program
About NADP
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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
Spring 2012 NADP Subcommittee Meeting
April 24-26, 2012
Portland, OR
Recent News
The
2011 NAPAP Report to Congress
has been released
Presentations from the 2011 Annual Meeting and Scientific symposium are
now online.
NADP has approved a new
Precipitation Collector
.
The Ammonia Monitoring Network (
AMoN
) is NADP's newest network.
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
1995
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2007
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