Articles | Volume 16, issue 2
https://doi.org/10.5194/acp-16-525-2016
https://doi.org/10.5194/acp-16-525-2016
Research article
 | 
19 Jan 2016
Research article |  | 19 Jan 2016

Sources of nitrogen deposition in Federal Class I areas in the US

H.-M. Lee, F. Paulot, D. K. Henze, K. Travis, D. J. Jacob, L. H. Pardo, and B. A. Schichtel

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Short summary
Sources of nitrogen deposition (Ndep) in Federal Class I areas in the US are investigated, identifying unique features in contributions from different species, sectors and locations. Ndep in many parks is impacted by emissions several hundred km away; the role of oxidized vs reduced sources varies regionally. Emissions reductions in the western US most effectively reduce the extent of areas in critical load exceedance, while reductions in the east most effectively reduce exceedance magnitudes.
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