Impact model: VIC

VIC 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: http://doi.org/10.5880/PIK.2017.010

Sector
Water (global)
Region
global
Contact Person

Information for the model VIC 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.

Output Data
Experiments: historical
Climate Drivers: WATCH (WFD)
Date: 2017-02-20
Experiments: historical
Climate Drivers: GSWP3, PGMFD v.2 (Princeton), WATCH (WFD), WATCH+WFDEI
Date: 2016-05-11
Resolution
Spatial Aggregation: regular grid
Spatial Resolution: 0.5°x0.5°
Temporal Resolution Of Input Data: Climate Variables: daily
Temporal Resolution Of Input Data: Co2: constant
Temporal Resolution Of Input Data: Land Use/Land Cover: annual
Temporal Resolution Of Input Data: Soil: constant
Additional Temporal Resolution Information: co2 has no effect on the simulation
Input data sets used
Observed Atmospheric Climate Data Sets Used: GSWP3, PGMFD v.2 (Princeton), WATCH (WFD), WATCH+WFDEI
Climate Variables: tasmax, tasmin, wind, pr
Exceptions to Protocol
Exceptions: no
Spin-up
Was A Spin-Up Performed?: Yes
Spin-Up Design: 1901-1970
Natural Vegetation
Natural Vegetation Partition: Natural vegetation was fixed, provided by the Advanced Very High Resolution Radiometer–based, 1-km, global land classification. Irrigation fraction was dynamic, derived from the provided MIRCA dataset
Management & Adaptation Measures
Management: Irrigation starts as additional precipitation during the growing season when soil moisture drops below the wilting point and stops until field capacity is reached. Dam opeartion is optimized based on reservoir functions such as flood control, irrigation, hydropower generation, and water supply
Technological Progress
Technological Progress: no
Soil
Soil Layers: Three soil layers
Water Use
Water-Use Types: irrigation
Water-Use Sectors: irrigation
Routing
Runoff Routing: Unit hydrograph approach see Lohmann, et. al. "A large‐scale horizontal routing model to be coupled to land surface parametrization schemes." Tellus A 48.5 (1996): 708-721.
Land Use
Land-Use Change Effects: Irrigation area. Irrigation starts as additional precipitation during the growing season when soil moisture drops below the wilting point and stops until field capacity is reached.
Dams & Reservoirs
Dam And Reservoir Implementation: Dam opeartion is optimized based on reservoir functions such as flood control, irrigation, hydropower generation, and water supply
Calibration
Was The Model Calibrated?: True
Which Years Were Used For Calibration?: Monthly runoff climatology 1948-2010
Which Dataset Was Used For Calibration?: Princeton
How Many Catchments Were Callibrated?: Observed flow was inversely routed to 1-deg resoulution grid cell first for 44 basins. Calibration was done for every 1-deg grid cell seperately
Vegetation
How Is Vegetation Represented?: Fixed monthly plant characteristics
Methods
Potential Evapotranspiration: Penman-Monteith
Snow Melt: Energy Balance