中文摘要：

为了定量描述黄河上游玛曲地区草地下垫面的空气动力学特征,为模式提供准确的下垫面参数,利用＂黄河源区气候与环境综合观测研究站＂2006年9月的湍流观测资料,结合Martano由单层超声观测资料确定下垫面空气动力学参数的方法,计算了黄河上游玛曲地区草原下垫面空气动力学粗糙度z0和零平面位移d,即z0为0.035 m,d为0.143 m。同时,将z0和d应用于陆面过程模式CoLM中,检验其对模式模拟性能的影响,结果表明,改进陆面参数后的模式对感热通量和潜热通量的模拟均有明显改善。

英文摘要：

Using the observed turbulent data at Yellow River Water Resource Region Climate and Environment Comprehensive Observation and Research Station（Maqu station） in September 2006,and Martaon′s method that estimate aerodynamic parameters using the single-level sonic anemometer data,the aerodynamic parameters at Maqu station have been analyzed.The results indicate that the zero plane displacement is 0.143 m and the aerodynamic roughness length is 0.035 m.Comparing with other similar land surface,the results shows that the zero plane displacement and the roughness length are in a reasonable range.And then,the aerodynamic roughness length and the zero plane displacement are applying to the land surface model CoLM,the simulation ability of the CoLM about the heat flux are evaluated.The results show that the sensible heat flux and the latent heat flux are better than before.