Articles | Volume 23, issue 20
https://doi.org/10.5194/acp-23-13015-2023
https://doi.org/10.5194/acp-23-13015-2023
Measurement report
 | 
16 Oct 2023
Measurement report |  | 16 Oct 2023

Measurement report: Airborne measurements of NOx fluxes over Los Angeles during the RECAP-CA 2021 campaign

Clara M. Nussbaumer, Bryan K. Place, Qindan Zhu, Eva Y. Pfannerstill, Paul Wooldridge, Benjamin C. Schulze, Caleb Arata, Ryan Ward, Anthony Bucholtz, John H. Seinfeld, Allen H. Goldstein, and Ronald C. Cohen

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Direct observations of NOx emissions over the San Joaquin Valley using airborne flux measurements during RECAP-CA 2021 field campaign
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Data quality enhancement for field experiments in atmospheric chemistry via sequential Monte Carlo filters
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Cited articles

American Lung Association: Most Polluted Cities, https://www.lung.org/research/sota/city-rankings/most-polluted-cities (last access: 8 April 2022), 2022. a
Bar-Yehuda, Z.: zoharby/plot_google_map, https://github.com/zoharby/plot_google_map (last access: 11 July 2022), 2022. a
Boningari, T. and Smirniotis, P. G.: Impact of nitrogen oxides on the environment and human health: Mn-based materials for the NOx abatement, Curr. Opin. Chem. Eng., 13, 133–141, https://doi.org/10.1016/j.coche.2016.09.004, 2016. a
Burian, S. J., Brown, M. J., and Velugubantla, S. P.: Roughness length and displacement height derived from building databases, OSTI.GOV, https://www.osti.gov/biblio/976101 (last access: 6 October 2023), 2002. a, b
California Department of Transportation: State Highways (Segments), California, 2015, https://searchworks.stanford.edu/view/xc453kn9742 (last access: 15 July 2022), 2015. a
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Short summary
NOx is a precursor to hazardous tropospheric ozone and can be emitted from various anthropogenic sources. It is important to quantify NOx emissions in urban environments to improve the local air quality, which still remains a challenge, as sources are heterogeneous in space and time. In this study, we calculate NOx emissions over Los Angeles, based on aircraft measurements in June 2021, and compare them to a local emission inventory, which we find mostly overpredicts the measured values.
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