Abstract
A new atmospheric parameterization formulation of evaporation from a non–plant-covered surface was derived by combining the previous two types of widely used formulations, the so-called “α method” and the “β method.” The study indicates that the “α method” cannot provide a reasonable estimation of evaporation from bare soil, while the “β method” does provide reasonable predictions during the daytime. However, the evaporation rate differences, estimated by the β method from that by the new parameterization, is evident at night. The deviation rises while increasing the atmospheric stability and reducing the soil wetness. The impact of atmospheric stability, soil wetness at the top or inside the soil, and soil type on evaporation rate is also discussed in detail.
