Articles | Volume 23, issue 20
https://doi.org/10.5194/acp-23-13015-2023
© Author(s) 2023. 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-23-13015-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Measurement report
| 
16 Oct 2023
Measurement report |
| 16 Oct 2023
| 16 Oct 2023
Measurement report: Airborne measurements of NOx fluxes over Los Angeles during the RECAP-CA 2021 campaign
Clara M. Nussbaumer
CORRESPONDING AUTHOR
Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, 55128 Mainz, Germany
Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
Bryan K. Place
Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
Qindan Zhu
Department of Earth and Planetary Science, University of California, Berkeley, Berkeley, CA 94720, USA
Eva Y. Pfannerstill
Department of Environmental Science, Policy, and Management, University of California, Berkeley, Berkeley, CA 94720, USA
Paul Wooldridge
Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
Benjamin C. Schulze
Department of Environmental Science and Engineering, California Institute of Technology, Pasadena, CA 91125, USA
Caleb Arata
Department of Environmental Science, Policy, and Management, University of California, Berkeley, Berkeley, CA 94720, USA
Ryan Ward
Department of Environmental Science and Engineering, California Institute of Technology, Pasadena, CA 91125, USA
Anthony Bucholtz
Department of Meteorology, Naval Postgraduate School, Monterey, CA 93943, USA
John H. Seinfeld
Department of Environmental Science and Engineering, California Institute of Technology, Pasadena, CA 91125, USA
Allen H. Goldstein
Department of Environmental Science, Policy, and Management, University of California, Berkeley, Berkeley, CA 94720, USA
Department of Civil and Environmental Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
Department of Earth and Planetary Science, University of California, Berkeley, Berkeley, CA 94720, USA
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Cited
11 citations as recorded by crossref.
- Significant annual variations of firework-impacted aerosols in Northeast China: Implications for rethinking the firework bans Y. Cheng et al. https://doi.org/10.1016/j.atmosenv.2024.120914
- Measurement report: Diurnal variability in NO2 and HCHO lower-tropospheric vertical profiles in southeastern Los Angeles P. Peterson et al. https://doi.org/10.5194/acp-25-7777-2025
- A better representation of volatile organic compound chemistry in WRF-Chem and its impact on ozone over Los Angeles Q. Zhu et al. https://doi.org/10.5194/acp-24-5265-2024
- Flux measurements of NOx, O3 and Ox: Emission characteristics, inventory validation and titration effects X. Zhang et al. https://doi.org/10.1016/j.envpol.2025.127213
- Enhancement of O3–CO ratios at tropospheric subtropical latitudes: Photochemistry and stratospheric influence L. Ort et al. https://doi.org/10.5194/acp-25-14987-2025
- Incorporating Cooking Emissions To Better Simulate the Impact of Zero-Emission Vehicle Adoption on Ozone Pollution in Los Angeles Q. Zhu et al. https://doi.org/10.1021/acs.est.5c00902
- In-flight characterization of a compact airborne quantum cascade laser absorption spectrometer L. Ort et al. https://doi.org/10.5194/amt-17-3553-2024
- Comparative Impacts of Freight and Non-truck Traffic on NOx and Ozone Concentrations in the Los Angeles Basin A. Moore et al. https://doi.org/10.1021/acsestair.5c00396
- Temperature-dependent emissions dominate aerosol and ozone formation in Los Angeles E. Pfannerstill et al. https://doi.org/10.1126/science.adg8204
- Evidence of Heating-Dominated Urban NOx Emissions S. Cliff et al. https://doi.org/10.1021/acs.est.4c13276
- Inequality in Hazardous Air Pollutant Emissions and Concentrations Measured Over Los Angeles J. Ofodile et al. https://doi.org/10.1021/acs.est.5c00808
11 citations as recorded by crossref.
- Significant annual variations of firework-impacted aerosols in Northeast China: Implications for rethinking the firework bans Y. Cheng et al. https://doi.org/10.1016/j.atmosenv.2024.120914
- Measurement report: Diurnal variability in NO2 and HCHO lower-tropospheric vertical profiles in southeastern Los Angeles P. Peterson et al. https://doi.org/10.5194/acp-25-7777-2025
- A better representation of volatile organic compound chemistry in WRF-Chem and its impact on ozone over Los Angeles Q. Zhu et al. https://doi.org/10.5194/acp-24-5265-2024
- Flux measurements of NOx, O3 and Ox: Emission characteristics, inventory validation and titration effects X. Zhang et al. https://doi.org/10.1016/j.envpol.2025.127213
- Enhancement of O3–CO ratios at tropospheric subtropical latitudes: Photochemistry and stratospheric influence L. Ort et al. https://doi.org/10.5194/acp-25-14987-2025
- Incorporating Cooking Emissions To Better Simulate the Impact of Zero-Emission Vehicle Adoption on Ozone Pollution in Los Angeles Q. Zhu et al. https://doi.org/10.1021/acs.est.5c00902
- In-flight characterization of a compact airborne quantum cascade laser absorption spectrometer L. Ort et al. https://doi.org/10.5194/amt-17-3553-2024
- Comparative Impacts of Freight and Non-truck Traffic on NOx and Ozone Concentrations in the Los Angeles Basin A. Moore et al. https://doi.org/10.1021/acsestair.5c00396
- Temperature-dependent emissions dominate aerosol and ozone formation in Los Angeles E. Pfannerstill et al. https://doi.org/10.1126/science.adg8204
- Evidence of Heating-Dominated Urban NOx Emissions S. Cliff et al. https://doi.org/10.1021/acs.est.4c13276
- Inequality in Hazardous Air Pollutant Emissions and Concentrations Measured Over Los Angeles J. Ofodile et al. https://doi.org/10.1021/acs.est.5c00808
Saved (final revised paper)
Latest update: 09 Jun 2026
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.
NOx is a precursor to hazardous tropospheric ozone and can be emitted from various anthropogenic...
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