【摘要】 本研究针对CoLM、CLM3·0模拟结果的差异,就二者采用的不同参数化方案进行了比较分析,认为导致模式模拟结果差异的主要原因在于二者对植被覆盖度、冠层水、热、辐射传输以及光合作用和气孔导度等物理过程的处理有所不同,而CoLM模式对这些过程的处理更吻合实际。将CoLM的相关方案移植到CLM3·0进行的一系列数值试验表明,新方案的引入能够明显改善CLM3·0的模拟效果。此外,两个模式还存在一些共性的问题,例如不同的优化与叶面和冠层空气潜热传导率以及与土壤水文等过程有关的参数化方案,可能是导致模式结果在某些情况下存在偏差的主要原因。更多还原

【Abstract】 Based on the simulations using the different parameterization schemes in the two models, a series of simulations were conducted and the results indicate the causes of different simulation between two models may result from different parameterization schemes on the vegetation fraction, canopy water, canopy heat flux and canopy radiation transfer, and the parameterization schemes in CoLM are more closer to the reality than those in CLM3.0. After using the corresponding schemes from CoLM, the simulations by CLM3.0 are obviously improved. Moreover, the two models have some common insufficiency in the parameterization schemes, for example, the parameterization schemes of latent heat flux, soil hydrological process, and so on, which may be the causes of the simulation errors in some cases.更多还原