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Modeling of land surface processes in the context of coupled land-atmosphere prediction has advanced over the last decade with the development of many sophisticated models that represent a concentration of effort by researchers from disciplines such as hydrology, climate modeling and ecology. The variable infiltration capacity (VIC) land surface model has been widely used at local, continental and global scales, and its performance has been evaluated using various data sources. The Oklahoma Mesonet data offer a particularly rich source opportunity for model evaluation, due to the spatial extent of the relatively dense station network, and the range of meteorological and soil variables available at each station. Also, some selected Mesonet sites include surface energy budget measurements through the Oklahoma Atmospheric Surface-layer Instrumentation system (OASIS) project. The objective of this paper is to evaluate performance of the VIC model using OASIS measurements for the period of June 1999 through May 2000. Modeled net radiation and latent, sensible and ground heat fluxes were compared with the observations and presented in this paper.