Articles | Volume 23, issue 7
https://doi.org/10.5194/acp-23-4185-2023
© 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/acp-23-4185-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
06 Apr 2023
Research article |
| 06 Apr 2023
| 06 Apr 2023
Nitrate chemistry in the northeast US – Part 1: Nitrogen isotope seasonality tracks nitrate formation chemistry
Claire Bekker
Department of Earth, Environmental, and Planetary Sciences, Brown
University, Providence, RI 02912, USA
now at: Department of Environmental Health Sciences, University of
California Los Angeles, Los Angeles, CA 90095, USA
Wendell W. Walters
CORRESPONDING AUTHOR
Institute at Brown for Environment and Society, Brown University,
Providence, RI 02912, USA
now at: Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
Lee T. Murray
Department of Earth and Environmental Sciences, University of
Rochester, Rochester, NY 14627, USA
Meredith G. Hastings
Department of Earth, Environmental, and Planetary Sciences, Brown
University, Providence, RI 02912, USA
Institute at Brown for Environment and Society, Brown University,
Providence, RI 02912, USA
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David S. Stevenson, Alcide Zhao, Vaishali Naik, Fiona M. O'Connor, Simone Tilmes, Guang Zeng, Lee T. Murray, William J. Collins, Paul T. Griffiths, Sungbo Shim, Larry W. Horowitz, Lori T. Sentman, and Louisa Emmons
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Short summary
Nitrate is a critical component of the atmosphere that degrades air quality and ecosystem health. We have investigated the nitrogen isotope compositions of nitrate from deposition samples collected across the northeastern United States. Spatiotemporal variability in the nitrogen isotope compositions was found to track with nitrate formation chemistry. Our results highlight that nitrogen isotope compositions may be a robust tool for improving model representation of nitrate chemistry.
Nitrate is a critical component of the atmosphere that degrades air quality and ecosystem...
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