陆面气象要素非均匀分布对模式计算的影响及其参数化初步探讨

IMPACTOF HETEROGENEOUS LAND SURFACEON MODELS AND ITS PRELIMINARY PARAMETERIZATION

摘要: 为改进陆面过程的参数化，初步探讨了模式中陆面气象要素次网格尺度不均匀性分布对模拟计算结果的影响。应用平均化方法初步探讨陆面过程的参数化，并分析了气象要素次网格尺度不均匀性分布对计算结果的影响特征。结果表明，次网格尺度不均匀性分布对模式的计算结果会产生一定的偏差，可用平均化方法对陆面过程次网格尺度不均匀性分布进行初步参数化。

Abstract: To improve the parameterization of land surface processes, a preliminary analysis of the impact of subgrid land surface heterogeneity on model results is carried out. The scheme of land surface process parameterization is presented by using an averaging method. The impact of heterogeneity is discussed. Numerical results show that the heterogeneity could lead a discrepancy between model results and reality, and the averaging method can be applied to the heterogeneous land surface