Community Water Model (CWatM)
Research model: CWatM
Community Water Model (CWatM) is a hydrological model simulating the water cycle daily at global and local levels, historically and into the future, maintained by IIASA BNR Water Security group. CWatM assesses water supply, demand, and environmental needs, including water management and human influence within the water cycle.
Basic sepcifications of the model:
Name of model | Community Water Model (CWatM) | ||
About the model |
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Purpose of model | Global/regional assessment of integrated water resources management, nexus issues and hydro-economic modelling | ||
Developer | IIASA, 2016 | ||
Scale |
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Spatial | 1km resolution, Global and Local scale | ||
Temporal | Daily (sub-daily timestep for soil and river routing) | ||
Process description |
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Model type | Hydrological rainfall-runoff and channel routing | Heat | Yes |
Interception | Yes | Snow dynamics | Day-degree method |
Infiltration & water flow | Xinanjiang model/preferential bypass flow & Kinematic wave approx. | Frozen soil | Yes |
Surface runoff | Yes – ARNO scheme | Crop growth | Yes |
Macropore flow | No | Nitrogen transport | No |
Evapotranspiration | Penman-Montieth/ Hargreaves/Hamon options | Phosphorus transport | No |
Artificial drainage | No | Particle transport | No |
Percolation | Yes | Pesticide transport | No |
Other | Groundwater flow via linear reservoir, Lakes & reservoirs, glaciers, water demands/consumption, irrigation, modular structure for easy linkage to other models |