An intercomparison study on models of estimating the aerodynamic resistance

This paper describes an evaluation of the aerodynamic resistance models based on direct measurements over a wheat field and a bare soil surface. According to the performance analysis it is shown that (1) Over bare soil surface, the models of Choudhury-2, Verma-Rosenberg and Mahrt-Ek have relatively high precision, while on the winter wheat field, XieXianqun model, Choudhury-1 model and Brutsaert model performed better. (2) The aerodynamic resistance is inversely proportional to the wind speed until reaching a state of stabilization. (3) The model to estimate the aerodynamic resistance should be chosen according to the surface condition.