干旱区生态环境知识资源中心

A land-surface model is improved by using some new research results. Net radiation, upward longwave radiation, surface temperature, sensible heat, latent heat and temperature, specific humidity and wind speed in the ground layer under precipitation are simulated by using the data observed at Dunhuang during the "Field Experiment on Interaction between Land and Atmosphere in the Arid Region of Northwest China". The results show that the improvement is significant. The radiation flux and surface temperature are well simulated. The simulation of energy is also good. In addition, the simulation of the temperature and specific humidity in the ground layer by the new model is much better than that of the unimproved model.