Evaluation of the ALARO1-SFX (CY43T2) regional climate model over Belgium across different resolutions

Dewettinck, Wout; Van de Vyver, Hans; Degrauwe, Daan; Hamdi, Rafiq; Van Ginderachter, Michiel; Van Schaeybroeck, Bert; Van Weverberg, Kwinten; Vandelanotte, Kobe; Caluwaerts, Steven; Termonia, Piet

doi:10.5194/gmd-19-7911-2026

Articles | Volume 19, issue 16

https://doi.org/10.5194/gmd-19-7911-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-19-7911-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 16

Development and technical paper

|

25 Aug 2026

Development and technical paper |

| 25 Aug 2026

Evaluation of the ALARO1-SFX (CY43T2) regional climate model over Belgium across different resolutions

Wout Dewettinck, Hans Van de Vyver, Daan Degrauwe, Rafiq Hamdi, Michiel Van Ginderachter, Bert Van Schaeybroeck, Kwinten Van Weverberg, Kobe Vandelanotte, Steven Caluwaerts, and Piet Termonia

Data sets

[DATASET] Evaluation of the ALARO1-SFX (CY43T2) regional climate model over Belgium across different resolutions Wout Dewettinck et al. https://doi.org/10.5281/zenodo.15296030

Model code and software

[SOFTWARE] Evaluation of the ALARO1-SFX (CY43T2) regional climate model over Belgium across different resolutions Wout Dewettinck et al. https://doi.org/10.5281/zenodo.15791681

Short summary

This study evaluates an updated version of the ALARO (ALADIN–AROME) regional climate model over Belgium at multiple resolutions, using long-term climate simulations. Coupling the model to the externalised surface scheme SURFEX (Surface Externalisée) and running at higher resolutions improved simulated temperature, precipitation, and precipitation extremes, supporting the value of high-resolution modelling for representing local climate extremes and informing adaptation.