中文摘要：

在西藏的高原的纳姆湖公司区域上的大气的研究 Mesoscale 模型(MM5 ) 的第五产生的宾夕法尼亚州的大学 / 公民中心的性能在 2006 从五个表面观察地点基于数据被评估。在二导致 thermally 的发行量(湖微风和山脉山谷风) 之间的相互作用也被调查。结果证明 MM5 能被用来模仿 2-m 空气温度；然而， MM5 在风地模拟需要改进。二数字模拟被进行在本地天气和风系统上学习湖的效果。模型的原来的陆地盖子在控制实验被使用，并且湖被类似于在敏感实验包围湖的区域的草地代替。模拟的结果显示湖提高了北方斜坡山脉山谷风，山变化了近海在北方岸的流动方向。在日子期间，一个清楚的会聚的地区和强壮的 upflow 在 Nyainqentanglha 范围的北方斜坡上被观察，它可以在北方斜坡上引起经常的降水。在夜里期间，全部区域被南方流动控制。

英文摘要：

Performance of the fifth-generation Pennsylvania State University/National Center for Atmospheric Research Mesoscale Model（MM5） over the Lake Nam Co region of the Tibetan Plateau was evaluated based on the data from five surface observation sites in 2006. The interaction between two thermally-induced circulations（lake breezes and mountain-valley winds） was also investigated. The results show that MM5 could be used to simulate 2-m air temperature; however, MM5 needs improvement in wind field simulation.Two numerical simulations were conducted to study the effect of the lake on the local weather and wind system. The original land cover of the model was used in the control experiment, and the lake was replaced with grassland resembling the area surrounding the lake in the sensitive experiment. The results of the simulations indicate that the lake enhanced the north slope mountain-valley wind and the mountain changed the offshore flow direction at the north shore. During the day, a clear convergent zone and a strong upflow were observed over the north slope of the Nyainq？entanglha Range, which may cause frequent precipitation over the north slope. During the night, the entire area was controlled by a south flow.