Variable Infiltration Capacity (VIC) Model Version 4.2.b

TL;DRAbstract

The Variable Infiltration Capacity (VIC) macroscale hydrological model (MHM) has been developed over the last two decades at the University of Washington and Princeton University in collaboration with a large number of other researchers around the globe. A skeletal first version of the VIC model was introduced to the community by Wood et al. [1992] and a greatly expanded version, from which current variations evolved, is described by Liang et al. [1994]. As compared to other MHMs, VIC’s distinguishing hydrological features are its representation of subgrid variability in soil storage capacity as a spatial probability distribution to which surface runoff is related, and its parameterization of base flow, which occurs from a lower soil moisture zone as a nonlinear recession. Movement of moisture between the soil layers is modeled as gravity drainage, with the unsaturated hydraulic conductivity a function of the degree of saturation of the soil. Spatial variability in soil properties, at

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