Articles | Volume 25, issue 12
https://doi.org/10.5194/acp-25-6273-2025
https://doi.org/10.5194/acp-25-6273-2025
Research article
 | 
26 Jun 2025
Research article |  | 26 Jun 2025

Representing improved tropospheric ozone distribution over the Northern Hemisphere by including lightning NOx emissions in CHIMERE

Sanhita Ghosh, Arineh Cholakian, Sylvain Mailler, and Laurent Menut

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Cited articles

Akimoto, H. and Tanimoto, H.: Rethinking of the adverse effects of NOx-control on the reduction of methane and tropospheric ozone–challenges toward a denitrified society, Atmos. Environ., 277, 119033, https://doi.org/10.1016/j.atmosenv.2022.119033, 2022. a, b
Albrecht, R. I., Goodman, S. J., Buechler, D. E., Blakeslee, R. J., and Christian, H. J.: Where Are the Lightning Hotspots on Earth?, B. Am. Meteorol. Soc., 97, 2051–2068, https://doi.org/10.1175/BAMS-D-14-00193.1, 2016. a
Alfaro, S. C. and Gomes, L.: Modeling mineral aerosol production by wind erosion: Emission intensities and aerosol size distributions in source areas, J. Geophys. Res.-Atmos., 106, 18075–1808, https://doi.org/10.1029/2000JD900339, 2001. a
Allen, D., Pickering, K., Stenchikov, G., Thompson, A., and Kondo, Y.: A three-dimensional total odd nitrogen (NOy) simulation during SONEX using a stretched-grid chemical transport model, J. Geophys. Res.-Atmos., 105, 3851–3876, https://doi.org/10.1029/1999JD901029, 2000. a
Allen, D., Pickering, K., Duncan, B., and Damon, M.: Impact of lightning NO emissions on North American photochemistry as determined using the Global Modeling Initiative (GMI) model, J. Geophys. Res.-Atmos., 115, D22301, https://doi.org/10.1029/2010JD014062, 2010. a, b
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In this study, we evaluate the present state of modelling lightning flashes over the Northern Hemisphere, using the classical CTH (cloud-top height) scheme and the ICEFLUX scheme with the CHIMERE model. Our study provides a comprehensive 3D comparison of model outputs to assess the robustness and applicability of these schemes. An improvement in O3 distribution in the tropical free troposphere is observed due to inclusion of LNOx (nitrogen oxide emissions from lightning) in the model. Inclusion of LNOx also reduces the lifetime of trace gas CH4.
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