Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 12
Articles | Volume 19, issue 12
https://doi.org/10.5194/gmd-19-5491-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-19-5491-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 12
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 Buchholz, Desneiges Murray, Zhaoxiang Cao, Jing Peng, Kai Li, Fuqiang Yang, Wei Pan, Jinyan Chen, and Liwen Xing
Publisher's note: on 26 June 2026, the author Rebecca Buchholz’s last name was corrected due to a spelling mistake.

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Short summary
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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