Articles | Volume 19, issue 12
https://doi.org/10.5194/gmd-19-5491-2026
https://doi.org/10.5194/gmd-19-5491-2026
Model evaluation paper
 | 
25 Jun 2026
Model evaluation paper |  | 25 Jun 2026

Benchmarking ozone stress parameterizations in CLM5: a global mechanistic assessment of thresholds and memory effects

Peng Zhou, Jieming Chou, Li Dan, Jean-François Lamarque, Muhammad Bilal, Fang Li, Mengting Sun, Rebecca Buccholz, Desneiges Murray, Zhaoxiang Cao, Jing Peng, Kai Li, Fuqiang Yang, Wei Pan, Jinyan Chen, and Liwen Xing

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Cited articles

Achebak, H., Garatachea, R., Pay, M. T., Jorba, O., Guevara, M., Pérez García-Pando, C., and Ballester, J.: Geographic sources of ozone air pollution and mortality burden in Europe, Nat. Med., 30, 1732–1738, https://doi.org/10.1038/s41591-024-02976-x, 2024. 
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We assessed the impact of ozone damage representations in a land-surface model on simulations of vegetation productivity. Results varied depending on how ozone effects were triggered and how vegetation recovery was modeled. Schemes that incorporated vegetation-specific thresholds and memory effects on photosynthesis and water loss more accurately reflected spatial patterns, indicating directions for enhancing model realism and improving projections of ecosystem responses to ozone pollution.
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