Long-Term Trends in Sulfur and Reactive Nitrogen Deposition Across the Northern Hemisphere and United States

  • Rohit MathurEmail author
  • Yuqiang Zhang
  • Christian Hogrefe
  • Jia Xing
Conference paper
Part of the Springer Proceedings in Complexity book series (SPCOM)


We model the changes in wet and dry deposition amounts of reactive nitrogen and sulfur over the 1990–2010 period using the WRF-CMAQ modeling system. WRF-CMAQ simulations for this 21-year period were conducted over a domain covering the northern hemisphere using a horizontal resolution of 108 km and a nested domain over the contiguous U.S. using a grid of 36 km resolution. The impacts of contrasting changes in emission patterns across the Northern Hemisphere, i.e., reductions in North America and Europe vs. increases across regions in Asia, on changing deposition amounts over terrestrial and aquatic ecosystems in these regions is analyzed.


Hemispheric CMAQ Atmospheric deposition Oxidized and reduced nitrogen Ecosystem 



The views expressed in this paper are those of the authors and do not necessarily reflect the views and policies of U.S. Environmental Protection Agency.


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Copyright information

© This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply 2020

Authors and Affiliations

  • Rohit Mathur
    • 1
    Email author
  • Yuqiang Zhang
    • 1
  • Christian Hogrefe
    • 1
  • Jia Xing
    • 2
  1. 1.Computational Exposure Division, National Exposure Research LaboratoryU.S. Environmental Protection Agency, RTP, NCWashington, D.C.USA
  2. 2.School of EnvironmentTsinghua UniversityBeijingChina

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