陆面模式(SSiB)对敦煌荒漠戈壁下垫面陆面过程的模拟及敏感性试验  

Validation of SSiB Model over Gobi in Dunhuang and its Sensitivity to Vegetation Parameters

作　　者：朱德琴[1] 高晓清[2] 陈文[1] 

机构地区：[1]中国科学院大气物理研究所,北京100080 [2]中国科学院寒区旱区环境与工程研究所,甘肃兰州730000

出　　处：《中国沙漠》2006年第3期466-472,共7页Journal of Desert Research

基　　金：中国科学院知识创新工程重要方向项目(KZCX3-SW-218);国家自然科学基金项目(40231005)共同资助

摘　　要：利用2000年5月26日至6月15日“敦煌试验”加强观测期的资料,对SSiB在中国西北典型干旱区荒漠戈壁下垫面上的使用性能进行了检验,并进行了植被覆盖变化的敏感性试验。模拟结果表明:在没有降水的情况下,SSiB在中国西北典型干旱区荒漠戈壁下垫面上具有一定的模拟能力。同时通过敏感性试验发现,模式对一些植被参数,如反照率、叶面积指数、粗糙度长度等相当敏感,因此要准确模拟陆面过程,必须保证这些参数的代表性。The Simplified Simple Biosphere model （SSiB） has been validated in this paper based on the observation data for land-surface interaction in ＂Dunhuang Experiment＂ during May 26 to June 15, 2000 over a Gobi desert site in northwest of China. The simulation results show that SSiB is generally able to simulate the energy fluxes and soil-surface temperature. The model appears to reflect the measured results with sufficient consistency, which can be used as a tool to study land cover change on the region. The sensitivity tests show that the model is sensitive to some vegetation parameters, It should be noted that some vegetation parameters must be observed correctly and defined exactly, and it is one of the most important works to improve the veracity of some parameters in the model.

关 键 词：敦煌试验 SSiB模式 数值模拟 敏感性试验 

分 类 号：P435.2[天文地球—大气科学及气象学]