Articles | Volume 22, issue 20
https://doi.org/10.5194/acp-22-13431-2022
https://doi.org/10.5194/acp-22-13431-2022
Research article
 | 
18 Oct 2022
Research article |  | 18 Oct 2022

Quantifying the importance of vehicle ammonia emissions in an urban area of northeastern USA utilizing nitrogen isotopes

Wendell W. Walters, Madeline Karod, Emma Willcocks, Bok H. Baek, Danielle E. Blum, and Meredith G. Hastings

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Cited articles

Ampollini, L., Katz, E. F., Bourne, S., Tian, Y., Novoselac, A., Goldstein, A. H., Lucic, G., Waring, M. S., and DeCarlo, P. F.: Observations and Contributions of Real-Time Indoor Ammonia Concentrations during HOMEChem, Environ. Sci. Technol., 53, 8591–8598, https://doi.org/10.1021/acs.est.9b02157, 2019. 
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Behera, S. N. and Sharma, M.: Investigating the potential role of ammonia in ion chemistry of fine particulate matter formation for an urban environment, Sci. Total Environ., 408, 3569–3575, 2010. 
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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.
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