摘要
利用参加第五次耦合模式比较计划(Coupled Model Intercomparison Project Phase 5,简称CMIP5)的10个海气耦合模式的输出结果,比较了这些模式对6种季风指数年际变化的模拟能力,并从季风区大气环流场的气候态以及海表温度异常(SSTA)与季风的相关关系两个方面对季风指数的模拟差异原因进行了讨论。得到结论:CMIP5模式对于季风指数年际变化模拟的结果与观测资料差异较大,其中对南亚季风指数(WebsterYang index)模拟最好,模式集合会显著改进对南亚季风指数的模拟效果;不同模式基本可以描述出各个季风区大气环流场的气候态分布特征;耦合模式对南亚季风指数模拟的关键可能在于对SSTA的年际变化以及SSTA与季风相关关系的准确模拟。
Based on the model results of the historical simulations given by 10 climate models from Phase 5 of the Coupled Model Inter-comparison Project (CMIP5),6 monsoon indexes (MI) of the Asian-Australian monsoon system are compared with the results of reanalysis data.To discuss the cause of discrepancy for different coupled models in simulating different MI,the climatic circulation,sea surface temperature anomaly (SSTA) and the relationship between MI and SSTA are investigated.Some conclusions are summarized:First,the Webster-Yang index is best simulated by coupled models,and if an ensemble mean is taken then the result will be significantly improved; Second,except for the Australian summer monsoon index,most models can describe the climatic status of circulation over the key region of different MI; Third,the SSTA in Ni(n)io3 area and the relationship between MI and SSTA may be important for coupled models in simulating the Asian-Australian monsoon index.
出处
《热带气象学报》
CSCD
北大核心
2013年第5期749-758,共10页
Journal of Tropical Meteorology
基金
国家重点基础研究发展计划(973计划)项目(2010CB950503
2009CB421402)
国家自然科学基金项目((41130691
41205076)
中国科学院"西部之光"博士资助项目(29Y128871)
中国科学院寒旱区陆面过程与气候变化重点实验室开放基金项目(LPCC201101)共同资助
关键词
CMIP5
模式集合
季风指数
环流特征
海表温度异常
CMIP5
model ensemble
monsoon index
circulation characteristics
sea surface temperature anomaly
作者简介
通讯作者:李瑞青,女,内蒙古自治区人,硕士,主要从事多模式模拟试验的气候变化分析研究.E-mail:liruiqing@lzb.ac.cn