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Journal Article

Development of the Community Water Model (CWatM v1.04) – a high-resolution hydrological model for global and regional assessment of integrated water resources management

Authors

Burek,  Peter
External Organizations;

Satoh,  Yusuke
External Organizations;

Kahil,  Taher
External Organizations;

Tang,  Ting
External Organizations;

Greve,  Peter
External Organizations;

Smilovic,  Mikhail
External Organizations;

Guillaumot,  Luca
External Organizations;

/persons/resource/fangzhao

Zhao,  Fang
Potsdam Institute for Climate Impact Research;

Wada,  Yoshihide
External Organizations;

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25188oa.pdf
(Publisher version), 15MB

Supplementary Material (public)
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Citation

Burek, P., Satoh, Y., Kahil, T., Tang, T., Greve, P., Smilovic, M., Guillaumot, L., Zhao, F., Wada, Y. (2020): Development of the Community Water Model (CWatM v1.04) – a high-resolution hydrological model for global and regional assessment of integrated water resources management. - Geoscientific Model Development, 13, 7, 3267-3298.
https://doi.org/10.5194/gmd-13-3267-2020


Cite as: https://publications.pik-potsdam.de/pubman/item/item_25188
Abstract
We develop a new large-scale hydrological and water resources model, the Community Water Model (CWatM), which can simulate hydrology both globally and regionally at different resolutions from 30 arcmin to 30 arcsec at daily time steps. CWatM is open source in the Python programming environment and has a modular structure. It uses global, freely available data in the netCDF4 file format for reading, storage, and production of data in a compact way. CWatM includes general surface and groundwater hydrological processes but also takes into account human activities, such as water use and reservoir regulation, by calculating water demands, water use, and return flows. Reservoirs and lakes are included in the model scheme. CWatM is used in the framework of the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP), which compares global model outputs. The flexible model structure allows for dynamic interaction with hydro-economic and water quality models for the assessment and evaluation of water management options. Furthermore, the novelty of CWatM is its combination of state-of-the-art hydrological modeling, modular programming, an online user manual and automatic source code documentation, global and regional assessments at different spatial resolutions, and a potential community to add to, change, and expand the open-source project. CWatM also strives to build a community learning environment which is able to freely use an open-source hydrological model and flexible coupling possibilities to other sectoral models, such as energy and agriculture.