National Atmospheric Deposition Program
The National Atmospheric Deposition Program (NADP) was organized in 1977 for long-term monitoring of atmospheric chemical deposition. The NADP operates three networks that monitor precipitation chemistry at more than 300 sites. It is a cooperative program receiving support from federal, state, and local government agencies; Native American organizations; State Agricultural Experiment Stations; universities; and non-governmental organizations. The NADP Program Office and Central Analytical Laboratory were based at the Illinois State Water Survey in Champaign, IL from the late 1970s until 2017, when the program relocated to University of Wisconsin's State Laboratory of Hygiene. This community holds reports produced during the time NADP was headquartered here. NADP data and documents produced after their departure from Illinois is available on the program website.
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(Illinois State Water Survey, 2015-10)2015 Summary of Critical Load Maps On the cover: Surface Water Critical Loads for Acidity. Average aggregation for 12 km2 grid cell with S + N (McDonnell et al. 2014; Scheffe et al. 2014; Sullivan et al. 2014; unpublished ...
(Illinois State Water Survey, 2017-10)
(Illinois State Water Survey, 2017-12)The critical load maps provided here represent a compilation of empirical and calculated critical load values from a variety of regional- and national-scale projects. The intended uses of these maps are for scientific, ...
(Illinois State Water Survey, 2016-10)In October 2011, the National Atmospheric Deposition Program (NADP) Executive Committee formed the Total Deposition (TDEP) Science Committee. The mission of TDEP is to improve estimates of atmos-pheric deposition by advancing ...
(Illinois State Water Survey, National Atmospheric Deposition Program, 2016-10)