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OLS Field Name OLS Field Data
Main Title Two-Layer Variable Infiltration Capacity Land Surface Representation for General Circulation Models.
Author Xu, L. ;
CORP Author Washington Univ., Seattle. Dept. of Civil Engineering.;Environmental Protection Agency, Washington, DC.;Department of Energy, Washington, DC.;National Aeronautics and Space Administration, Washington, DC.
Publisher May 94
Year Published 1994
Report Number WATER RESOURCES SER/TR-140;
Stock Number PB96-197165
Additional Subjects General circulation models ; Precipitation(Meteorology) ; Infiltration ; Surface runoff ; Subsurface runoff ; Stream flow ; Soil moisture ; Canopies ; Vegetation ; Ground cover ; Grasslands ; Soils ; Temperature ; Hydrology ; Thermal properties ; Parameters ; Numerical weather forcasting ; Land surface
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB96-197165 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/19/1996
Collation 233p
Abstract
A simple two-layer variable infiltration capacity (VIC-2L) land surface model suitable for incorporation in general circulation models (GCMs) is described. The model consists of a two-layer characterization of the soil within a GCM grid cell, and uses an aerodynamic representation of latent and sensible heat fluxes at the land surface. The effects of GCM spatial subgrid variability of soil moisture and a hydrologically realistic runoff mechanism are represented in the soil layers. The model was tested using long-term hydrologic and climatalogical data for Kings Creek, Kansas to estimate and validate the hydrological parameters. Surface flux data from three First International Satellite Land Surface Climatology Project Field Experiments (FIFE) intensive field compaigns in the summer and fall of 1987 in central Kansas, and from the Anglo-Brazilian Amazonian Climate Observation Study (ABRACOS) in Brazil were used to validate the mode-simulated surface energy fluxes and surface temperature.