Articles | Volume 22, issue 20
https://doi.org/10.5194/acp-22-13431-2022
© Author(s) 2022. 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-22-13431-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
18 Oct 2022
Research article |
| 18 Oct 2022
| 18 Oct 2022
Quantifying the importance of vehicle ammonia emissions in an urban area of northeastern USA utilizing nitrogen isotopes
Wendell W. Walters
CORRESPONDING AUTHOR
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
Madeline Karod
Department of Earth, Environmental, and Planetary Sciences, Brown
University, Providence, RI 02912, USA
Chemistry and Physics Department, Simmons University, Boston, MA 02215,
USA
Emma Willcocks
Program in Biology, Division of Biology and Medicine, Brown
University, Providence, RI 02912, USA
Bok H. Baek
Center for Spatial Information, Sciences, and Systems, George Mason
University, Fairfax, VA 22030, USA
Danielle E. Blum
Institute at Brown for Environment and Society, Brown University,
Providence, RI 02912, USA
Department of Chemistry, Brown University, Providence, RI 02916, 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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Short summary
Atmospheric ammonia and its products are a significant source of urban haze and nitrogen deposition. We have investigated the seasonal source contributions to a mid-sized city in the northeastern US megalopolis utilizing geospatial statistical analysis and novel isotopic constraints, which indicate that vehicle emissions were significant components of the urban-reduced nitrogen budget. Reducing vehicle ammonia emissions should be considered to improve ecosystems and human health.
Atmospheric ammonia and its products are a significant source of urban haze and nitrogen...
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