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Variable Infiltration Capacity (VIC)
Macroscale Hydrologic Model

Current Release Version 4.0.4 (December 5, 2003)

Model Operations Documentation

VIC Figure Descriptions - click on figure for overview of model

Model Code Documentation
Model Bug Reports and Version Updates Model Source Code
Technical Notes Model References
Click Image for Overview of Model Processes

The following icons are used to identify changes between version 3.2.1 and 4.0 in the documentation:

  • indicates new features added to the code,
  • indicates features no longer available in the code,
  • indicates web pages that have modifications for release 4.0.
  • This web site is devoted to the continued development and documentation of the VIC hydrologic model. Originally developed by Xu Liang at the University of Washington, the model code is now being cleaned and unified so that all currently documented versions are available in an easily understandable and modifiable code.

    VIC is a macroscale hydrologic model that solves full water and energy balances. It is a research model and in it's various forms it has been applied to many watersheds including the Columbia River, the Ohio River, the Arkansas-Red Rivers, and the Upper Mississippi Rivers, as well as being applied globally. If you make use of this model, please acknowledge the references listed at the bottom of this web site.

    Every new application addresses new problems and conditions which the model may not currently be able to handle, and as such the model is always under development. For information about the current release of the new VIC-NL code, to get the source code, and to get your name in the VIC User Group mailing list, send e-mail to vicadmin@hydro.washington.edu

    Site Index (text)

    Old Home Page for Water Balance Model

    Old Home Page for Energy Balance Model

    Model Development

    Development and maintenance of the current official version of the VIC macroscale hydrologic model is conducted at the University of Washington, Department of Civil and Environmental Engineering. Dennis P. Lettenmaier is the faculty advisor, questions and comments regarding the VIC model should be addressed to vicadmin@hydro.washington.edu.

    The VIC model is an active research model and as such there is no formal documentation beyond these web pages and the published papers that make use of the model. Because it is actively being used in research updates and additions to the model are always under development. Updates will be made to the code when improvements or fixes warrant.

    VIC Model References

    Liang, X., D. P. Lettenmaier, E. F. Wood, and S. J. Burges, A Simple hydrologically Based Model of Land Surface Water and Energy Fluxes for GSMs, J. Geophys. Res., 99(D7), 14,415-14,428, 1994.

    Liang, X., A Two-Layer Variable Infiltration Capacity Land Surface Representation for General Circulation Models, Water Resour. Series, TR140, 208 pp., Univ. of Washington, Seattle, 1994.

    Liang, X., D. P. Lettenmaier, E. F. Wood, One-dimensional Statistical Dynamic Representation of Subgrid Spatial Variability of Precipitation in the Two-Layer Variable Infiltration Capacity Model, J. Geophys. Res., 101(D16) 21,403-21,422, 1996.

    Liang, X., E. F. Wood, and D. P. Lettenmaier, Surface soil moisture parameterization of the VIC-2L model: Evaluation and modifications, Global and Planetary Change, 13, 195-206, 1996.

    Liang, X., E. F. Wood, and D. P. Lettenmaier, Modeling ground heat flux in land surface parameterization schemes, J. Geophys. Res., 104(D8), 9581-9600, 1999.

    Cherkauer, K. A. and D. P. Lettenmaier, Hydrologic effects of frozen soils in the upper Mississippi River basin, J. Geophys. Res., 104(D16), 19,599-19,610, 1999.

    Selected VIC Application References

    Abdulla, F.A., D.P. Lettenmaier, E.F. Wood and J.A. Smith, Application of a macroscale hydrologic model to estimate the water balance of the Arkansas-Red river basin, J. Geophys. Res. 101(D3), 7449-7459, 1996.

    Wood, E.F., D. Lettenmaier, X. Liang, B. Nijssen and S.W. Wetzel, Hydrological modeling of continental-scale basins Annu. Rev. Earth Planet. Sci., 25, 279-300, 1997.

    Nijssen, B.N., D.P. Lettenmaier, X. Liang, S.W. Wetzel, and E.F. Wood, Streamflow simulation for continental-scale river basins, Water Resour. Res. 33(4), 711-724, 1997.

    Liang, X., E. F. Wood, D. Lohmann, D.P. Lettenmaier, and others, The Project for Intercomparison of Land-surface Parameterization Schemes (PILPS) Phase-2c Red-Arkansas River Basin Experiment: 2. Spatial and Temporal Analysis of Energy Fluxes, J. Global and Planetary Change, 19, 137-159, 1998.

    Lohmann, D. E. Raschke, B. Nijssen and D.P. Lettenmaier, Regional scale hydrology:II. Application of the VIC-2L model to the Weser river, Germany, Hydrological Sciences 43(1), 143-158, 1998.

    Hamlet, A.F. and D.P. Lettenmaier, Effects of Climate Change on Hydrology and Water Resources in the Columbia River Basin, Am. Water Res. Assoc., 35(6), 1597-1623, 1999.

    Hamlet, A.F. and D.P. Lettenmaier, Columbia River Streamflow Forecasting Based on ENSO and PDO Climate Signals, ASCE J. of Water Res. Planning and Mgmt., 125(6), 333-341, 1999.

    Leung, L.R., A.F. Hamlet, D.P. Lettenmaier and A. Kumar, Simulations of the ENSO Hydroclimate Signals in the Pacific Northwest Columbia River Basin, Bull. Am. Met. Soc., 80(11), 2313-2329, 1999.

    Mattheussen, B., R.L. Kirschbaum, I.A. Goodman, G.M. O'Donnell and D.P. Lettenmaier, Effects of land cover change on streamflow in the interior Columbia river basin (USA and Canada), Hydrol. Process. 14, 867-885, 2000.

    Hamlet, A.F. and D.P. Lettenmaier, Long-Range Climate Forecasting and its Use for Water Management in the Pacific Northwest Region of North America, J. Hydroinformatics, 02.3, 163-182, 2000.

    Maurer, E.P., G.M. O'Donnell, D.P. Lettenmaier, and J.O. Roads, Evaluation of the Land Surface Water Budget in NCEP/NCAR and NCEP/DOE Reanalyses using an Off-line Hydrologic Model. J. Geophys. Res. 106(D16), 17,841-17,862. , 2001

    Maurer, E.P., G.M. O'Donnell, D.P. Lettenmaier, and J.O. Roads, Evaluation of NCEP/NCAR Reanalysis Water and Energy Budgets using Macroscale Hydrologic Simulations, In: Land Surface Hydrology, Meteorology, and Climate: Observations and Modeling, AGU series in Water Science and Applications, V. Lakshmi, J. Albertson, and J. Schaake eds.,pp. 137-158, 2001.

    Hamlet, A.F., D. Huppert and D.P. Lettenmaier, Economic Value of Climate/Streamflow Forecasts for Columbia River Non-Firm Energy Production, ASCE J. W. Res. Planning and Mngmt., 2000 (in review)

    Nijssen, B.N., G.M. O'Donnell, D.P. Lettenmaier and E.F. Wood, Predicting the discharge of global rivers, J. Clim. 14, 3307-3323., 2001.

    Nijssen, B.N., R. Schnur and D.P. Lettenmaier, Global retrospective estimation of soil moisture using the VIC land surface model, 1980-1993, J. Clim. 14, 1790-1808. , 2001.

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    VIC Administrator Last modified: Tue Jan 22 13:26:02 PST 2002