Articles | Volume 24, issue 7
https://doi.org/10.5194/acp-24-4569-2024
https://doi.org/10.5194/acp-24-4569-2024
Research article
 | 
17 Apr 2024
Research article |  | 17 Apr 2024

Constraining long-term NOx emissions over the United States and Europe using nitrate wet deposition monitoring networks

Amy Christiansen, Loretta J. Mickley, and Lu Hu

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Cited articles

Ancellet, G., Godin-Beekmann, S., Smit, H. G. J., Stauffer, R. M., Van Malderen, R., Bodichon, R., and Pazmiño, A.: Homogenization of the Observatoire de Haute Provence electrochemical concentration cell (ECC) ozonesonde data record: comparison with lidar and satellite observations, Atmos. Meas. Tech., 15, 3105–3120, https://doi.org/10.5194/amt-15-3105-2022, 2022. 
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Short summary
In this work, we provide an additional constraint on emissions and trends of nitrogen oxides using nitrate wet deposition (NWD) fluxes over the United States and Europe from 1980–2020. We find that NWD measurements constrain total NOx emissions well. We also find evidence of NOx emission overestimates in both domains, but especially over Europe, where NOx emissions are overestimated by a factor of 2. Reducing NOx emissions over Europe improves model representation of ozone at the surface.
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