Impact model: SWBM

SWBM is one of the 13 global hydrology models following the ISIMIP2a protocol which form the base of simulations for the ISIMIP2a global water sector outputs; for a full technical description of the ISIMIP2a Simulation Data from Water (global) Sector, see this DOI link:

Water (global)
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Information for the model SWBM is provided for the simulation rounds shown in the tabs below. Click on the appropriate tab to get the information for the simulation round you are interested in.

Basic information
Output Data
Experiments: historical
Climate Drivers: GSWP3, PGMFD v.2 (Princeton), WATCH (WFD), WATCH+WFDEI
Date: 2016-05-11
Spatial Aggregation: regular grid
Spatial Resolution: 0.5°x0.5°
Temporal Resolution Of Input Data: Climate Variables: daily
Temporal Resolution Of Input Data: Co2: not used
Temporal Resolution Of Input Data: Land Use/Land Cover: not used
Temporal Resolution Of Input Data: Soil: constant
Input data sets used
Observed Atmospheric Climate Data Sets Used: GSWP3, PGMFD v.2 (Princeton), WATCH (WFD), WATCH+WFDEI
Climate Variables: tas, net radiation, pr
Was A Spin-Up Performed?: Yes
Spin-Up Design: 5 years with climate data provided
Extreme Events & Disturbances
Key Challenges: The model performs well in capturing dry extremes but has difficulties with wet extremes. The reasons are not yet fully understood.
Technological Progress
Technological Progress: No.
Soil Layers: 1
Water Use
Water-Use Sectors: nosoc simulations only
Runoff Routing: No routing performed.
Dams & Reservoirs
Dam And Reservoir Implementation: Not implemented
Was The Model Calibrated?: True
Which Years Were Used For Calibration?: Calibration against multiple hydrological reference data available in different years, overall spanning a period from 1984-2012
How Many Catchments Were Callibrated?: >100 near-natural catchments were used
How Is Vegetation Represented?: not specifically accounted for
Potential Evapotranspiration: net radiation used instead of potential evapotranspiration
Snow Melt: Degree-day method