Articles | Volume 18, issue 19
https://doi.org/10.5194/gmd-18-6623-2025
https://doi.org/10.5194/gmd-18-6623-2025
Development and technical paper
 | 
30 Sep 2025
Development and technical paper |  | 30 Sep 2025

Implementing a process-based representation of soil water movement in a second-generation dynamic vegetation model: application to dryland ecosystems (LPJ-GUESS-RE v1.0)

Wim Verbruggen, David Wårlind, Stéphanie Horion, Félicien Meunier, Hans Verbeeck, Aleksander Wieckowski, Torbern Tagesson, and Guy Schurgers

Model code and software

LPJ-GUESS with soil water movement based on Richard's equation (LPJ-GUESS-RE v1.0) Wim Verbruggen et al. https://doi.org/10.5281/zenodo.15024130

LPJ-GUESS Release v4.1.1 model code J. Nord et al. https://doi.org/10.5281/zenodo.8065737

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Short summary
We improved the representation of soil water movement in a state-of-the-art dynamic vegetation model. This is important for dry ecosystems, as they are often driven by changes in soil water availability. We showed that this update resulted in a better match with observations and that the updated model is more sensitive to soil texture. The new model can also simulate a groundwater table. This updated model can help us to better understand the future of dry ecosystems under climate change.
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