Articles | Volume 18, issue 17
https://doi.org/10.5194/acp-18-12991-2018
https://doi.org/10.5194/acp-18-12991-2018
Research article
 | 
10 Sep 2018
Research article |  | 10 Sep 2018

Source regions contributing to excess reactive nitrogen deposition in the Greater Yellowstone Area (GYA) of the United States

Rui Zhang, Tammy M. Thompson, Michael G. Barna, Jennifer L. Hand, Jill A. McMurray, Michael D. Bell, William C. Malm, and Bret A. Schichtel

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Latest update: 05 Dec 2024
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Short summary
Excess reactive nitrogen deposition in the Greater Yellowstone Area is adversely affecting sensitive ecosystems. Source apportionment (SA) to quantify the contributions from important emission sectors/regions was conducted using CAMx–PSAT. Our results highlighted the importance of controlling reduced nitrogen, especially from agricultural activities in the Snake River valley. Uncertainties from NH3 simulation, boundary conditions, and precipitation estimates in SA results were also discussed.
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