Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 17, issue 13
Articles | Volume 17, issue 13
https://doi.org/10.5194/gmd-17-5123-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-17-5123-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 13
Development and technical paper
 | 
04 Jul 2024
Development and technical paper |  | 04 Jul 2024

Coupling a large-scale glacier and hydrological model (OGGM v1.5.3 and CWatM V1.08) – towards an improved representation of mountain water resources in global assessments

Sarah Hanus, Lilian Schuster, Peter Burek, Fabien Maussion, Yoshihide Wada, and Daniel Viviroli

Supplement

https://doi.org/10.5194/gmd-17-5123-2024-supplement

Data sets

Coupling a large-scale glacier and hydrological model (OGGM v1.5.3 and CWatM V1.08) - Data Set Sarah Hanus et al. https://doi.org/10.5281/zenodo.10046823

Randolph Glacier Inventory -- A Dataset of Global Glacier Outlines, Version 6 RGI Consortium https://doi.org/10.7265/4m1f-gd79

Model code and software

sarah-hanus/pipeline_oggm_cwatm: v1.0.0 Sarah Hanus https://doi.org/10.5281/zenodo.10048089

iiasa/CWatM: CWatM reservoir, crop, snow update (1.081) Peter Burek et al. https://doi.org/10.5281/zenodo.10044318

OGGM/oggm: v1.5.3 (v1.5.3) Fabien Maussion et al. https://doi.org/10.5281/zenodo.6408559

OGGM/massbalance-sandbox: Version used in Hanus et al. glacier-hydro coupling manuscript (v0.1_used_in_hanus_et_al_glacier_hydro_coupling) Lilian Schuster et al. https://doi.org/10.5281/zenodo.10055600

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Short summary
This study presents a coupling of the large-scale glacier model OGGM and the hydrological model CWatM. Projected future increase in discharge is less strong while future decrease in discharge is stronger when glacier runoff is explicitly included in the large-scale hydrological model. This is because glacier runoff is projected to decrease in nearly all basins. We conclude that an improved glacier representation can prevent underestimating future discharge changes in large river basins.
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