Articles | Volume 20, issue 5
https://doi.org/10.5194/bg-20-971-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-971-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 Mar 2023
Research article |
| 09 Mar 2023
| 09 Mar 2023
Atmospheric deposition of reactive nitrogen to a deciduous forest in the southern Appalachian Mountains
John T. Walker
CORRESPONDING AUTHOR
U.S. Environmental Protection Agency, Office of Research and Development, Durham, NC, USA
Xi Chen
U.S. Environmental Protection Agency, Office of Research and Development, Durham, NC, USA
now at: U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Durham, NC, USA
Zhiyong Wu
U.S. Environmental Protection Agency, Office of Research and Development, Durham, NC, USA
now at: RTI International, Durham, NC, USA
Donna Schwede
U.S. Environmental Protection Agency, Office of Research and Development, Durham, NC, USA
retired
Ryan Daly
U.S. Environmental Protection Agency, Office of Research and Development, Durham, NC, USA
now at: Boulder A.I.R. LLC, Boulder, CO, USA
Aleksandra Djurkovic
U.S. Environmental Protection Agency, Office of Research and Development, Durham, NC, USA
A. Christopher Oishi
U.S. Department of Agriculture, Forest Service, Southern Research Station, Coweeta Hydrologic Laboratory, Otto, NC, USA
Eric Edgerton
Atmospheric Research & Analysis, Inc., Cary, NC, USA
Jesse Bash
U.S. Environmental Protection Agency, Office of Research and Development, Durham, NC, USA
Jennifer Knoepp
U.S. Department of Agriculture, Forest Service, Southern Research Station, Coweeta Hydrologic Laboratory, Otto, NC, USA
retired
Melissa Puchalski
U.S. Environmental Protection Agency, Office of Air and Radiation, Washington, DC, USA
John Iiames
U.S. Environmental Protection Agency, Office of Research and Development, Durham, NC, USA
Chelcy F. Miniat
U.S. Department of Agriculture, Forest Service, Southern Research Station, Coweeta Hydrologic Laboratory, Otto, NC, USA
now at: U.S. Department of Agriculture, Forest Service, Albuquerque, NM, USA
Model code and software
STAGE bidirectional air-surface exchange model (Version 1) Jesse Bash and Zhiyong Wu https://doi.org/10.5281/zenodo.7667344
Short summary
Better estimates of atmospheric nitrogen (N) deposition are needed to accurately assess ecosystem risk and impacts from deposition of nutrients and acidity. Using measurements and modeling, we estimate total N deposition of 6.7 kg N ha−1 yr−1 at a forest site in the southern Appalachian Mountains, a region sensitive to atmospheric deposition. Reductions in deposition of reduced forms of N (ammonia and ammonium) will be needed to meet the lowest estimates of N critical loads for the region.
Better estimates of atmospheric nitrogen (N) deposition are needed to accurately assess...
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