BCC_CSM北极海冰模拟性能的改进对东亚冬季气候模拟的影响  

Impact of BCC_CSM Arctic sea ice simulation improvement on East Asian winter climate simulation

作　　者：邓汝漳 储敏[2] 任宏利 刘景鹏[2] 陈权亮[1] DENG Ruzhang;CHU Min;REN Hongli;LIU Jingpeng;CHEN Quanliang(Chengdu University of Information Technology,Chengdu 610225,China;National Climate Center,Beijing 100081,China;Chinese Academy of Meteorological Sciences,Beijing 100081,China)

机构地区：[1]成都信息工程大学,四川成都610225 [2]国家气候中心,北京100081 [3]中国气象科学研究院,北京100081

出　　处：《大气科学学报》2021年第1期61-74,共14页Transactions of Atmospheric Sciences

基　　金：国家重点研发计划资助项目(2018YFC1506000,2018YFC1407104)。

摘　　要：国家气候中心气候系统模式(BCC_CSM)将美国Los Alamos国家实验室发展的海冰模式CICE5.0替代原有的海冰模式SIS,形成一个新版本耦合模式,很好地提高了模式对北极海冰和北极气候的模拟能力。在此基础上,本文评估新耦合模式对1985—2014年东亚冬季气候的模拟性能,检验北极海冰模拟性能的改进对东亚冬季气候模拟性能的影响。结果表明,引入CICE5.0后,新耦合模式能较好地模拟出东亚冬季海平面气压、850 hPa风场以及辐射通量,进而改善东亚气温以及降水的气候态空间分布模拟效果。进一步分析发现,与原有耦合模式相比,新耦合模式更好地抓住了东亚冬季海平面气压、总降水量和气温异常对同期巴伦支海-喀拉海海冰密集度异常的响应,进而提高了模式对东亚冬季中高纬度地区气温以及降水变率的模拟能力。The Los Alamos Sea Ice Model 5.0(CICE5.0)was introduced to the Beijing Climate Center Climate System Model(BCC_CSM)as a new alternative to the Sea Ice Simulator(SIS).The new coupled model performance on the Arctic sea ice and polar climate simulations has been satisfactorily improved.On this basis,this paper evaluates the simulation performance of the new coupled model for East Asia winter climate from 1985 to 2014,and tests the impact of the improved Arctic sea ice simulation performance on the East Asian winter climate simulation performance.Results show that the new coupled model can well simulate the winter sea level pressure,850 hPa wind vector and radiation flux in East Asian,which can improve the simulation effect of climatological distributions of temperature and precipitation in East Asian.Further analysis indicates that,compared with the original coupled model,the new coupled model can better capture the response of East Asia winter sea level pressure,total precipitation and temperature anomalies to the sea ice concentration anomaly in Barents and Kara seas in the same period,thus improving the simulation ability of the model to temperature and precipitation variability in the mid-high latitudes of East Asia in winter.

关 键 词：气候系统模式 海冰模式 北极海冰 东亚冬季气候 模式评估 

分 类 号：P731.15[天文地球—海洋科学] P461.2