Towards improved Euro-Mediterranean discharge  simulations in regional coupled climate models: a  comparative assessment of hydrologic performance

Hamitouche, Mohamed; Fosser, Giorgia; RafieeiNasab, Arezoo; Anav, Alessandro

doi:10.5194/gmd-19-2881-2026

Articles | Volume 19, issue 7

https://doi.org/10.5194/gmd-19-2881-2026

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

https://doi.org/10.5194/gmd-19-2881-2026

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

Articles | Volume 19, issue 7

Model evaluation paper

|

16 Apr 2026

Model evaluation paper |

| 16 Apr 2026

Towards improved Euro-Mediterranean discharge simulations in regional coupled climate models: a comparative assessment of hydrologic performance

Mohamed Hamitouche, Giorgia Fosser, Arezoo RafieeiNasab, and Alessandro Anav

Supplement

https://doi.org/10.5194/gmd-19-2881-2026-supplement

Data sets

Model codes and observation data for ''Regional-scale Hydrologic Model Comparison Including Calibration for Improved River Discharge Simulations into the Mediterranean Sea'' Mohamed Hamitouche et al. https://doi.org/10.5281/zenodo.16333943

ERA5 hourly data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

Short summary

Predicting how much water flows from rivers into the Mediterranean is challenging due to climate change and human impacts. We compared two hydrological models – a global river routing model and a fully coupled land surface–hydrology model – to assess their performance. The coupled model, especially after calibration, better reproduces river discharge and seasonal flow, helping improve flood and drought planning.