Articles | Volume 19, issue 5
https://doi.org/10.5194/gmd-19-1991-2026
https://doi.org/10.5194/gmd-19-1991-2026
Model description paper
 | 
09 Mar 2026
Model description paper |  | 09 Mar 2026

Implementation of a dry surface layer soil resistance in two contrasting semi-arid sites with SURFEX-ISBA V9.0

Belén Martí, Jannis Groh, Guylaine Canut, and Aaron Boone

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Systematic overestimation of evapotranspiration over irrigated areas by an offline land surface model
Tanguy Lunel, Belén Martí, Aaron Boone, and Patrick Le Moigne
Hydrol. Earth Syst. Sci., 30, 5117–5143, https://doi.org/10.5194/hess-30-5117-2026,https://doi.org/10.5194/hess-30-5117-2026, 2026
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Cited articles

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Short summary
The characterization of vegetation at two sites proved insufficient to adequately simulate the evapotranspiration. A dry surface layer was implemented in the land surface model SURFEX-ISBA (Externalized Surface-Interactions Soil-Biosphere-Atmosphere) v9.0. It is compared to simulations without a soil resistance. The application to an alfalfa site and a natural grass site in semiarid conditions results in an improvement in the estimation of the latent heat flux. The surface energy budget and the soil and vegetation characteristics are explored in detail.
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