陆面模式CLSM的设计及性能检验II.模式检验

Design of a Comprehensive Land Surface Model and Its Validation Part II. Model Validation

利用BOREAS ,HEIFE ,ARME ,GAME TIPEX等大量的陆面外场观测资料 ,针对不同类型的陆面过程 ,对所发展的陆面模式CLSM的性能进行检验。模拟结果与观测资料的对比分析表明 :一方面 ,CLSM能够对积雪变化、干旱 半干旱地区的水热交换等特殊的陆面过程进行合理的描述 ;另一方面 ,CLSM对热带雨林地区的植被 -大气相互作用、高原地气交换过程同样具有很强的模拟能力。CLSM解决了陆面模式对上述特殊下垫面描述能力有限的实际问题 ,保证了对特殊下垫面进行合理描述的同时 ,又保证了对其他不同陆面状况的模拟能力。CLSM改善了陆面模式对全球范围内不同下垫面条件下的陆面过程及地 -气交换过程的模拟能力。

By using observational datasets collected by BOREAS, HEIFE, ARME, GAME-TIPEX representing different land cover conditions, comprehensive land surface model (CLSM) is validated against the observations to verify the capability to simulate different land processes. Results suggest that the model not only simulates the special land surface processes including seasonal dynamics of snow cover variation, soil heat and water transfer in arid / semi-arid regions, but also describes the interaction of vegetation-atmosphere in tropical rainforest, together with the exchanges between the land surface and atmosphere over the Tibetan Plateau accurately. It is concluded that CLSM can describe different physical processes accurately and exhibit it's comprehensive capability to represent processes related to various land surfaces.