A resistance representation of schemes for evaporation from bare and partly plant-covered surfaces for use in atmospheric models

Abstract

These aerodynamic resistances have been calculated using K theory for different morphologies of plant communities, then the performance of the evaporation schemes within the "α', "β', and their combination approaches that parameterize evaporation from bare and partly plant-covered soil surfaces are discussed. Additionally, a new "α' scheme is proposed based on an assumed power dependence α on volumetric soil moisture content and its saturated value. Finally, the performance of the considered and the proposed schemes is tested based on time integrations using real data. The sets were at the experimental site in Rimski Sancevi, Yugoslavia, on chernozem soil, as representative for a bare, and partly plant-covered surface, respectively. The accuracy of the schemes was compared with the observations using a root-mean-square error and the factor-of deviation analyses. -from Authors