中文摘要：

首先介绍简单生物圈模式版本3（Simple Biosphere Model 3,SiB3）相比SiB2的改进之处以及相应的参数化方案。为了检验SiB3模式能否模拟不同下垫面的地气之间水分和能量交换,本文在全球选择3个代表高、中、低纬度的典型实验站点（青藏高原安多站点、亚马逊流域的Km34站点和美国中西部的WLEF站点）,利用SiB3进行模拟分析和实验验证。研究结果表明,SiB3能够较好地模拟出不同下垫面的地表感热通量、潜热通量和净辐射通量随时间的变化率以及变化趋势,模式模拟值和测量值的相关系数达到0.80左右。但与实测相比,SiB3模拟的感热通量值仍偏高。在安多站点,模式模拟的地表土壤水分比较干燥,且模拟的地表温度较测量值偏高。

英文摘要：

In this paper,three climate-ecosystem representative sites have been selected to run SiB3 to evaluate its performance,including Anduo on Tibetan Plateau,Km34 flux tower site in Amazon Basin,and WLEF tower in midwest of United States.Among these three sites,Anduo has a typical arid and semi-arid climate with high-plain grassland,Km34 tower site is in tropical rainforest,and WLEF tower site has temperate continental climate with mixed forest.Our work demonstrates that the net radiations,sensible heat fluxes,latent heat fluxes,and land-surface skin temperatures are reasonably simulated especially for Tibetan Plateau and Amazon,where the correlations between modeled and observed values are generally above 0.80.The simulated sensible heat fluxes have persistent positive biases of 40.1 73.9 and 53.5 W/m2,compared to the measurements at all three sites.At Anduo site,the simulated soil moisture is too dry,and SiB3 has some difficulties in reproducing the observed soil water variations with depth.