A new method is proposed for the effective roughness length (ERL) in heterogeneous terrain based on the principle of equalization of momentum or heat fluxes calculated by the drag coefficient parameterization scheme used in the ECMWF numerical model.

• 利用湍流通量相等原理和ECMWF的总体湍流输送系数参数化方案,研究了气候数值模式中非均匀地表类型的有效粗糙度计算问题。