National Atmospheric Deposition Program 2009 Annual Summary
National Atmospheric Deposition Program
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https://hdl.handle.net/2142/27718
Description
Title
National Atmospheric Deposition Program 2009 Annual Summary
Author(s)
National Atmospheric Deposition Program
Issue Date
2010-09
Keyword(s)
Ammonium deposition
Atmospheric mercury
Abstract
The National Atmospheric Deposition Program
(NADP) provides data that support informed decisions
on environmental issues related to precipitation,
deposition chemistry, and atmospheric mercury species.
NADP data are relevant to scientists, educators, policymakers,
and the public. All data are available free of
charge via the website (http://nadp.isws.illinois.edu).
Products available on this site include seasonal and
annual averages, time series trend plots, concentration
and deposition maps, and reports.
In 2009, the NADP processed 13,214 samples
from the 250-site National Trends Network (NTN),
1,297 samples from the 7-site Atmospheric Integrated
Research Monitoring Network (AIRMoN), and 6,748
samples from the 115-site Mercury Deposition Network
(MDN). The Atmospheric Mercury Network (AMNet)
provided nearly 36,400 valid observations.
The NADP website is the primary tool for disseminating
data from the four NADP networks. There are
approximately 40,000 registered users on the site. In
2009, the site was accessed approximately 1.65 million
times and had 90,000 unique visitors. Data were downloaded
more than 26,000 times during the year. Users
of the NADP website include federal and state agencies,
universities, and primary and secondary (K-12) schools.
Eighty-five percent of the data downloads relate to acid
and nutrient species; the remaining 15 percent relate to
mercury in wet deposition.
Publisher
Illinois State Water Survey, National Atmospheric Deposition Program
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