Articles | Volume 19, issue 17
https://doi.org/10.5194/gmd-19-8233-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-19-8233-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Model description paper
| 
07 Sep 2026
Model description paper |
| 07 Sep 2026
| 07 Sep 2026
GWSWEX v1.0: a dual-solver 1D unsaturated zone model for mass-conservative groundwater recharge and runoff computation in distributed hydrological modelling
Veethahavya Kootanoor Sheshadrivasan
CORRESPONDING AUTHOR
Department of Physical Geography and Geoecology, Faculty of Science, Charles University, Prague, Czech Republic
Jakub Langhammer
CORRESPONDING AUTHOR
Department of Physical Geography and Geoecology, Faculty of Science, Charles University, Prague, Czech Republic
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Short summary
Water constantly flows between rivers, soils, and aquifers, but capturing this accurately in numerical models is difficult. Detailed models are too expensive for regional use; simpler ones lack the resolution to track groundwater and soil moisture correctly. We built a model bridging this gap using two interchangeable numerical approaches. Tests across six soil types showed near-centimetre groundwater accuracy, making it suitable for ensemble simulations and regional climate-impact studies.
Water constantly flows between rivers, soils, and aquifers, but capturing this accurately in...
