QQ客服 官方微博 反馈留言

	The arctic oscillation in coupled climate models
	Xin Xiao-Ge1,2; Zhou Tian-Jun1; Yu Ru-Cong3
刊名	Chinese journal of geophysics-chinese edition
	2008-03-01
卷号	51期号:2页码:337-351
关键词	Arctic oscillation (ao) Ipcc Twentieth-century climate simulation Coupled general circulation model (cgcm)
ISSN号	0001-5733
通讯作者	Xin xiao-ge(xinxg@cma.gov.cn)
英文摘要	This study investigates the winter (jfm) arctic oscillation (ao) simulated by 23 global coupled climate models participating in the project "the twentieth-century climate in coupled models" organized by ipcc ar4. results show that almost all of the models capture the ao as the leading mode of the interannual variability for the extratropieal atmosphere in the northern hemisphere. in most models, the north pacific center of the ao mode is more pronounced in comparison with the observation. such bias can be reduced with higher horizontal resolution of the agcm, deriving from the intercomparison between two pairs of coupled models. none of the models can reproduce the upward trend of the ao index as strong as that observed in recent decades. significant correlation of the ao index between the simulated and the observed only appears in two models (echo-g and ukmo-hadgem1). anomalies of the zonal mean zonal wind associated with the positive phase of the ao exhibit a dipole in the latitude, with westerly in the middle-high latitudes and easterly in the subtropical area. such features can be generated in most of the models (20/21), although the ability of some models in simulating the ao feature in the stratosphere needs to be improved. the models with good performances in reproducing the vertical structure of the ao, for example, ccsm3, mri-cgcm2.3.2, and ukmo-hadgem1, can reasonably simulate the cooling stratosphere in the north polar and the warming troposphere in the midlatitude at the positive phase of the ao. the majority of the models reproduce the significant influence of the ao on the temperature and the precipitation over the eurasian continent. several models can simulate the relationship between the ao and the east asian climate to a certain extent. overall, the model ukmo-hadgem1 performs best among all the models in simulating the basic features of the ao. the above results provide a certain reference basis for the further improvement of the coupled models' capability in reproducing the ao. they are also the basic reference for researchers to investigate the climate variability associated with the ao using the output of the coupled climate models of ipcc ar4.
WOS关键词	NORTH-ATLANTIC OSCILLATION ; ASIAN WINTER MONSOON ; EXTRATROPICAL CIRCULATION ; TIBETAN PLATEAU ; ANNULAR MODES ; VARIABILITY ; TEMPERATURE ; PRECIPITATION ; CHINA ; HEMISPHERE
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000254422000006
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2388951
专题	中国科学院大学
通讯作者	Xin Xiao-Ge
作者单位	1.Chinese Acad Sci, LASG, Inst Atmospher Phys, Beijing 100029, Peoples R China 2.Grad Univ, Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Meteorol Sci, LaSW, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Xin Xiao-Ge,Zhou Tian-Jun,Yu Ru-Cong. The arctic oscillation in coupled climate models[J]. Chinese journal of geophysics-chinese edition,2008,51(2):337-351.
APA	Xin Xiao-Ge,Zhou Tian-Jun,&Yu Ru-Cong.(2008).The arctic oscillation in coupled climate models.Chinese journal of geophysics-chinese edition,51(2),337-351.
MLA	Xin Xiao-Ge,et al."The arctic oscillation in coupled climate models".Chinese journal of geophysics-chinese edition 51.2(2008):337-351.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。