Daily regional evapotranspiration in Hebei Plain has been estimated based on the remote sensing data as well as the Surface Energy Balance System（SEBS） in this study.The Surface Energy Balance System（SEBS） model was developed to estimate land surface fluxes using remotely sensed data and available meteorological observations.It has the most important advantage of its inclusion of a physical model for the estimation of the roughness height for heat transfer which is the most critical parameter in the parameterization of the heat fluxes of land surface.In this paper

SEBS has been utilized to estimate the surface fluxes over Hebei Plain in Northeastern China by using MODIS/TERRA products

in combination with meteorological data collected in meteorological stations distributed over the study area.The estimated daily evapotranspiration by SEBS in cloud free days are first compared with measurements by the large weighing lysimeter in Luancheng Agro-Ecosystem Station（LAES）.The comparisons show that the estimated evapotranspiration from SEBS have a good agreement with the ground truth data.Based on the validation of the model

a modified version of SEBS is utilized to analysis the soil moisture status over the study area and the spatial-temporal distributions of actual evapotranspiration were analyzed by combination of the up-to-date land cover map in Hebei Plain.