Differences in Evapotranspiration Simulations Between the Noah Model and the DSSAT Model.

Evapotranspiration (ET) over crop lands has been simulated using land surface models and crop growth models. Because of differences in these models, estimates of ET would differ by models. The objective of this study was to compare evapotranspiration estimates using the Noah Multi Physics (MP) model and the CERES-Rice model over a paddy rice field in the areas near a flux tower in Korea. Simulations of ET were performed from 2003 to 2012 using weather data obtained at the flux measurement site. The ET simulated with the Noah MP model was considerably lower than those with the CERES-Rice model. However, the coefficient of determination was greater for the Noah MP model than the CERES-Rice model. This suggests that an improvement of the CERES-Rice model could be attainable incorporating a reliable module for simulation of matter and energy fluxes.