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Overview of the NATIONAL ATMOSPHERIC DEPOSITION PROGRAM (NADP) David Gay (217) 244‐0462 [email protected]
What is theWhat is theNADP?NADP?
• A Cooperative Research Program • Owned and operated by our members• Decisions made by our members
• Three networks
• measure wet deposition of pollutants
• National Trends Network (NTN)
• Atmospheric Integrated Research Monitoring Network (AIRMON)
• Mercury Deposition Network (MDN)
NADP’s Goal
• To monitor the chemistry of precipitation (rain and snow) consistently and as
accurately as we can, for long periods to determine changes over time (trends).
•The “Acid Rain” network
•Likens, Bormann, & Johnson, Environment, March 1972
Where did NADP come from?
Air and Rain – the Beginnings
of a Chemical Climatology
by Robert Angus Smith (1872)
Long Record of Measurement
Who is NADP?Who is NADP?
((Or is paying the bills?)Or is paying the bills?)
NADPNational Research Support Project #3
- A Long-term Monitoring ProgramIn Support of
Research on the Effects of Atmospheric Chemical Deposition
`OfficiallyOfficially……..
Federal AgencyMembers
University Members
Tribal Organizations
States and Tribal Organizations
Other Research Organizations
Executive Committee
Program Office
Subcommittee onNetwork Operations
Subcommittee onData Management
and Analysis
Subcommittee onEnvironmental Effects
Budget Advisory Committee
Quality AssuranceAdvisory Group
NTN AIRMoN MDN
Laboratory Laboratory
Program Coordinator
MANAGEMENT
OPERATIONS
QA Manager
Organization
What Do We What Do We Measure?Measure?
National Trends Network (NTN)Collects one‐week precipitation‐only sampleswith NADP wet‐dry collector
Measures precipitation with gage
AnalysesAcidsNutrientsBase Cations
DAG3
Slide 16
DAG3 need to add in the specifics hereDGay, 11/2/2006
NTN Sites
255 sites + 3 “precision” sites
Atmospheric Integrated Research Monitoring Network (AIRMoN)
Very similar to NTN, but collects daily when precipitation occurs
Measures same analytes as NTN
Samples refrigerated from collection until analysis
Measures precipitation with NWS “stick gage”
Mercury Deposition Network (MDN)
Collects one‐week precipitation‐only sampleswith MDN wet‐dry collector
Measures precipitation with gage
AnalysesTotal MercuryMethyl MercuryOther options
MDN Sites
Wet Deposition Collection
QA Overview• Quality Assurance Management Plan (web)
• Quality Assurance Project Plan (web)
• Scheduled Blanks and Spikes• Laboratory Blanks• Field Blanks
• 3rd Party QA Program (USGS & EPA)• Blind spike samples• Inter-lab comparisons• Precision/accuracy studies• Site Audits
• Independent QA Director
• Data Methods
3rd Party Site Audits
All of this information All of this information (including data)(including data)is on the webis on the web
http://nadp.sws.uiuc.eduhttp://nadp.sws.uiuc.edu
ResultsResultsof all of this?of all of this?
Sulfate Concentrations
••SOSO44== wet deposition,wet deposition,
••Three year running averages,Three year running averages,
••1985 to 20031985 to 2003
Sulfate Ion Concentrations1985-2003
1985 19861984
1986 19871985
Sulfate Ion Concentrations1985-2003
1987 19881986
Sulfate Ion Concentrations1985-2003
1988 19891987
Sulfate Ion Concentrations1985-2003
1989 19901988
Sulfate Ion Concentrations1985-2003
1990 19911989
Sulfate Ion Concentrations1985-2003
1991 19921990
Sulfate Ion Concentrations1985-2003
1992 19931991
Sulfate Ion Concentrations1985-2003
1993 19941992
Sulfate Ion Concentrations1985-2003
1994 19951993
Sulfate Ion Concentrations1985-2003
1995 19961994
Sulfate Ion Concentrations1985-2003
1996 19971995
Sulfate Ion Concentrations1985-2003
1997 19981996
Sulfate Ion Concentrations1985-2003
1998 19991997
Sulfate Ion Concentrations1985-2003
1999 20001998
Sulfate Ion Concentrations1985-2003
2000 20011999
Sulfate Ion Concentrations1985-2003
2001 20022000
Sulfate Ion Concentrations1985-2003
2002 20032001
Sulfate Ion Concentrations1985-2003
2003 20042002
Sulfate Ion Concentrations1985-2003
Ammonium Concentrations
••NHNH44++ wet deposition,wet deposition,
••Three year running averages,Three year running averages,
••1985 to 20031985 to 2003
Ammonium Ion Concentrations1985-2003
1985 19861984
1986 19871985
Ammonium Ion Concentrations1985-2003
1987 19881986
Ammonium Ion Concentrations1985-2003
1988 19891987
Ammonium Ion Concentrations1985-2003
1989 19901988
Ammonium Ion Concentrations1985-2003
1990 19911989
Ammonium Ion Concentrations1985-2003
1991 19921990
Ammonium Ion Concentrations1985-2003
1992 19931991
Ammonium Ion Concentrations1985-2003
1993 19941992
Ammonium Ion Concentrations1985-2003
1994 19951993
Ammonium Ion Concentrations1985-2003
1995 19961994
Ammonium Ion Concentrations1985-2003
1996 19971995
Ammonium Ion Concentrations1985-2003
1997 19981996
Ammonium Ion Concentrations1985-2003
1998 19991997
Ammonium Ion Concentrations1985-2003
1999 20001998
Ammonium Ion Concentrations1985-2003
2000 20011999
Ammonium Ion Concentrations1985-2003
2001 20022000
Ammonium Ion Concentrations1985-2003
2002 20032001
Ammonium Ion Concentrations1985-2003
2003 20042002
Ammonium Ion Concentrations1985-2003
WHAT ELSE
IS NADP DOING?IS NADP DOING?
Trends in Mercury ConcentrationsTrends in Mercury Concentrations
Estimates of Mercury Dry Deposition
•Measure atmospheric concentrations & meteorology
•Hg0, Hg2+ and particulate‐bound Hg•Same general procedure as CASTNET
•Modeled dry deposition from these atmospheric concentrations
•Proposed MDN Initiative starting…
Atmospheric Concentrations: Tekran
Methods are:-Lab Tested-Widely used-QA challenged-EPA Accepted
PHg
RGM
Hg0
Sampling box for manual system
Monitoring station for manually‐operated sampling system
EPA Method IO‐5Gold‐Trap Method for Hg0 i
Atmospheric Concentrations: Manually Operated Mercury Species Sampling
Active NADP/NTN Sites during the April 1986Chernobyl Nuclear Power Plant Explosion
Radionuclides tested in NADP Precipitation Samples
US Department of Energy
Soybean Rust
Bottom Line for NADP
Do measurements consistently and as accurately as possible
Check our accuracy (QA)
Help our members
Data online for everyone
