Articles | Volume 23, issue 7
https://doi.org/10.5194/acp-23-4185-2023
https://doi.org/10.5194/acp-23-4185-2023
Research article
 | 
06 Apr 2023
Research article |  | 06 Apr 2023

Nitrate chemistry in the northeast US – Part 1: Nitrogen isotope seasonality tracks nitrate formation chemistry

Claire Bekker, Wendell W. Walters, Lee T. Murray, and Meredith G. Hastings

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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.
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