NADP: Keeping You Connected, Special Dec 2016 Issue

 NADP: Keeping You Connected  December 2016 | Special Issue 

NADP: Keeping You Connected is a quarterly e-newsletter designed to keep you informed about our changing chemical climate and other updates from the National Atmospheric Deposition Program. To offer feedback or submit a suggestion, please email If you were forwarded this notification and would like to receive future newsletters, click here to subscribe.

In this issue:

New NADP Publications

2015 Annual Summary

2015 Annual Summary cover

The annual summary is a principal product of the NADP, as it summarizes the results of network operation for the most recently completed calendar year in map form. The 2015 report has summary maps or figures for January-December 2015 for all five NADP networks: the National Trends Network (NTN), the Atmospheric Integrated Research Monitoring Network (AIRMoN), the Mercury Deposition Network (MDN), the Atmospheric Mercury Network (AMNet), and the Ammonia Monitoring Network (AMoN). The annual summary also includes a summary of network measurements for the year, 2015 highlights for the NADP, and a brief background of the program.

View or download the full annual summary here.


Total Deposition 2015

Total Deposition report cover

In October 2011, the NADP Executive Committee formed the Total Deposition (TDEP) Science Committee. One of the initial goals of TDEP was to provide estimates of total sulfur and nitrogen deposition across the United States for use in critical loads and other assessments, where loading results in the acidification and eutrophication of ecosystems. Total deposition is the combined sum of wet and dry deposition. The Total Deposition 2015 report summarizes the status of total deposition from January-December 2015.

View or download the full report here.


Nitrogen from the Atmosphere

Nitrogen From the Atmosphere cover

This new educational resource from NADP provides information on nitrogen present in our atmosphere and land through the “Nitrogen Cascade”, how human activities contribute to nitrogen, what effects are associated with nitrogen deposition, and more. This is a great resource and useful for the classroom (appropriate for middle to high school and early college) and informal education. All are welcome to use the information in any educational setting, and please let us know how you use it.

View or download the full report here.


CLAD Critical Load Definitions Volume 1

Critical Load Definitions cover

NADP’s Critical Loads Atmospheric Deposition (CLAD) Science Committee identified the need for documentation and standardization of critical load terms and definitions. The CLAD responded, and put together the Critical Loads Definitions summary. These definitions were developed through a series of discussions and webinars with many scientists and policy professionals. CLAD has adopted these definitions, with the expectation that some modification will occur as the science develops.

View or download the full report here.


If you need printed copies of any of these reports, please contact the NADP Program Office (

Other News

Acid Rain and its Environmental Effects: Recent Scientific Advances Papers from the 9th International Conference on Acid Rain

Acid Rain 2015 Logo

The 31 articles published in this special issue of Atmospheric Environment represent the latest information on the status of acid rain across the globe, the extent to which ecosystems are recovering or will likely recover from acid rain impacts, and the interactions of acid rain with other pollutants, climate change, and the carbon cycle. These articles represent a selection of those presented at Acid Rain 2015, the 9th International Acid Rain Conference held in Rochester, New York in October 2015.

View the special issue here.


2016 NADP Fall Meeting and Scientific Symposium

Bandelier Photo
The field trip to the Bandelier National Monument.

The 2016 NADP Fall Meeting and Scientific Symposium took place in Santa Fe, New Mexico from October 31-November 4, 2016. The 2016 conference theme was “Deposition: What Does the Future Hold?”. The 141 people who attended the conference had the opportunity to enjoy a keynote presentation, eleven scientific sessions, a poster session and evening reception, and some chose to attend a field trip to monitoring sites at the Bandelier National Monument.


The conference website now has conference proceedings available, as well as PDFs of some speaker and poster presentations.

Dr. Daniel Wildcat photo

Dr. Daniel Wildcat giving his keynote presentation at the 2016 NADP Fall Meeting.

The keynote speaker was Dr. Daniel Wildcat, who is a professor at Haskell Indian Nations University in Lawrence, Kansas. His keynote presentation was titled “Atmospheric Deposition Research through an Indigenous Lens or Understanding the Natural LAW: Land, Air and Water”, and was very well received. A recording of the keynote presentation is now available on YouTube: