National Atmospheric Deposition Program (NADP)

PEP hosts and samples one of the data points for the National Atmospheric Deposition Program, collecting data from more than 250 National Trends Network (NTN) sites, which are used to assess long-term trends of sulfur and nitrogen pollutants in precipitation.

Data and Resources

NADP_Factsheet_Final.pdfPDF
National Atmospheric Deposition Program’s (NADP) Long-Term Monitoring...
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NADP QAPPPDF
Reference QAPP for NADP sampling network
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2019 NADP ReportPDF
When referencing maps or information in this report, please use the citation:...
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NADP FACTSHEET PNG.pngPNG
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Additional Info

Field	Value
Source	https://nadp.slh.wisc.edu/
Last Updated	September 30, 2025, 19:11 (UTC)
Created	September 30, 2025, 18:54 (UTC)