水、陆不均匀条件下大气边界层结构的模拟研究  

Numerical Simulation of Atmospheric Boundary Layer Structure over a Water-Land Heterogeneous Surface

作　　者：姜金华[1] 胡非[1] 刘熙明[1] 赵广来 

机构地区：[1]中国科学院大气物理研究所大气边界层物理与大气化学国家重点实验室,北京100029 [2]中国民航济南空中交通管理中心,山东济南250000

出　　处：《南京气象学院学报》2007年第2期162-169,共8页Journal of Nanjing Institute of Meteorology

基　　金：国家自然科学基金资助项目(4060500640405004);国家自然科学基金重点资助项目(40233030)

摘　　要：应用2004年白洋淀野外观测实验资料,对白洋淀地区水、陆不均匀分布条件下的大气边界层开展了数值模拟试验,结果表明:由于下垫面的热力差异,在360多km2的白洋淀地区,地表特征分布的不均匀可以引发弱的局地环流,影响大气边界层内温度和湿度的空间分布;在500 m高度以下,下垫面不均匀分布对湍流动能有明显影响。最后将模拟结果与观测资料进行了对比检验。The atmospheric boundary layer structure over a water-land heterogeneous surface（ Baiyang- dian region） is simulated by the RAMS（ the Regional Atmospheric Modeling System） model. The simulated results of potential temperature and specific humidity are compared with the data measured during the field experiment in the Baiyangdian region in November 2004. Simulated results show that the weak local circulation induced by the thermal difference of underlying surfaces occurred in the Baiyangdian region, i. e. a water-land heterogeneous region （about 360 km^2）, and it impacted the spatial distributions of specific humidity and temperature within the boundary layer, and of turbulent kinetic energy below 500 m. Finally, the simulated results are also compared with the observed data.

关 键 词：不均匀下垫面 大气边界层 湍流动能 数值模拟 

分 类 号：P435.1[天文地球—大气科学及气象学]