全球海-陆-气耦合模式大气模式分量的发展及其气候模拟性能Ⅰ——水平分辨率的影响  

THE DEVELOPMENT OF GOALS/LASG AGCM AND ITS GLOBAL CLIMATOLOGICAL FEATURES IN CLIMATE SIMULATION I——Influence of Horizontal Resulotion

作　　者：王在志[1] 吴国雄[2] 刘平[2] 吴统文[2] 

机构地区：[1]中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室 [2]中国气象局国家气候中心,北京100081

出　　处：《热带气象学报》2005年第3期225-237,共13页Journal of Tropical Meteorology

基　　金：中国科学院知识创新工程重要方向项目(ZKCX2-SW-210);国家重点基金(40135020;40221503;40231004)资助

摘　　要：对中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室的全球海-陆-气耦合气候系统模式(GOALS/LASG)的大气分量进行了发展,主要是提高模式的分辨率。水平分辨率由原来的菱形15波截断(R15)提高到菱形42波截断(R42);并用实际的海温、海冰为外强迫积分模式10年,将积分结果与观测资料比较以检验模式的气候模拟性能,重点是检验全球季节变化和年际变化的模拟能力。从检验结果看,分辨率增加后模式能成功地模拟出全球气候的主要特征,多种要素场的季节变化与观测也一致;对ElNi?o的响应特征也有很好的反映。但与其它气候模式一样,也存在一些误差。对结果的分析表明,云、辐射方案影响模式的能量平衡,进而影响陆面系统的模拟及降水的分布;对流参数化方案对模拟结果也有很大影响。The atmospheric component of the Global Ocean-Atmosphere-Land System Model of LASG (GOALS/LASG) is developed, mainly to increase model resolution. The horizontal resolution is increased from R15 to R42 in this part, and the model is integrated for 10 yrs with the observed sea surface temperature and sea ice. The climatological characteristics are compared with observational data, and the emphasis is given to the global seasonal and interannual variations. The evaluation of the model performance shows that the model is able to simulate the main features of the global climate, and the seasonal variations are consistent with the observations. The simulated responses to El Ni?o events are also quite reasonable. However, there are also some errors that are the same as in other AGCMs. The analyses show that the cloud and radiation processes affect the energy budget and the simulations of circulation and precipitation over land, and the convective parameterization has great importance to the simulation.

关 键 词：GOALS 大气环流模式 模式分辨率 气候模拟 

分 类 号：P461.2[天文地球—大气科学及气象学]