Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 15
Articles | Volume 19, issue 15
https://doi.org/10.5194/gmd-19-7239-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/gmd-19-7239-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 15
Development and technical paper
 | 
06 Aug 2026
Development and technical paper |  | 06 Aug 2026

A process-based modeling of soil organic matter physical properties for land surface models – Part 2: Global land surface simulations and mineral soil compactness adjustment

Bertrand Decharme, Diane Tzanos, Lucas Hardouin, Aaron Boone, Marie Minvielle, Patrick Le Moigne, and Rémi Gaillard

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Short summary
We developed a new method to represent how organic matter in soils, together with a mineral soil compactness adjustment, influences the movement of water and heat in land models. We implemented this approach in a global model and performed long-term simulations driven by weather data and global soil maps. Compared with an older empirical method, it produces more consistent soil moisture, runoff, evaporation, and ground temperature and shows closer agreement with observations.
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The externalised surface model SURFEX