Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 12
Articles | Volume 25, issue 12
https://doi.org/10.5194/acp-25-6273-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-6273-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 12
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

Supplement

https://doi.org/10.5194/acp-25-6273-2025-supplement

Data sets

Documentation of CAMS emission inventory products Denier van der Gon et al. https://doi.org/10.24380/Q2SI-TI6I

Quality Controlled Lightning Imaging Sensor (LIS) on International Space Station (ISS) Science Data V2 T. Lang https://doi.org/10.5067/LIS/ISSLIS/DATA111

LIS/OTD 0.5 Degree High Resolution Monthly Climatology (HRMC) D. Cecil https://doi.org/10.5067/LIS/LIS-OTD/DATA303

OzoneSonde WMO/GAW Ozone Monitoring Community https://doi.org/10.14287/10000008

Model code and software

chimere_v2023r1 (2023r1) L. Menut et al. https://doi.org/10.5281/zenodo.10907951

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Short summary
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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