A prediction model for the seasonal variation of evaporation from non-vegetated ground surfaces: (1)Model

Abstract

A soil model is presented for estimating the seasonal variations of evaporation, ground surface temperature and soil water content. In the model the surface heat budget and diffusion of water vapor in the soil pores are taken into consideration. The resistance of water vapor diffusion in the soil pores, the ground surface albedo, and soil thermometric parameters are functions of the soil water content. Required meteorological data to operate the model are the daily amount of precipitation, daily maximum and minimum air temperatures, and the daily means of wind speed, solar radiation, specific humidity and air temperature.