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	Asymmetry in the response of central eurasian winter temperature to amo
	Hao, Xin1,2,4; He, Shengping2; Wang, Huijun1,2,3
刊名	Climate dynamics
	2016-10-01
卷号	47期号:7-8页码:2139-2154
关键词	Amo Eurasia Europe Asymmetry Wave train Surface air temperature Usclivar
ISSN号	0930-7575
DOI	10.1007/s00382-015-2955-9
通讯作者	Hao, xin(haoxlike91@163.com)
英文摘要	The asymmetry in the teleconnection of the central eurasian winter surface air temperature (sat) with the atlantic multidecadal oscillation (amo) is discussed using observations and model simulations. observations indicate that the winter sat over central eurasia (30a degrees-70a degrees e, 30a degrees-50a degrees n) shows significant positive anomalies during the warm amo period but weak and insignificant anomalies in the cold amo period. in general, the warm winters in central eurasia are associated with large-scale negative sea level pressure anomalies in europe, anomalous southwesterly winds at 850 hpa over europe, the "+ - +" geopotential height anomalies at 500 hpa in the south of greenland, northern europe, western asia, and the slant north-south "+ -" pattern jet stream anomalies at 200 hpa in the north and south of the caspian sea. reverse patterns occur during cold winters. these statistically significant features are observed in the warm phase of amo. reversed circulation anomalies are observed during the cold phase of amo; however, these anomalies are weak and not statistically significant. furthermore, the asymmetry in the atmospheric response to amo is well supported by simulations with a suite of gfdl atmospheric model idealized experiments and four cmip5 models historical experiments. both observations and simulations indicate that rossby waves propagating from the north atlantic eastward to eurasia emerge in the warm amo and disappear in the cold amo. thus, the different propagations of rossby waves, induced by the different surface thermal conditions of the warm and cold amo, are the potential connection between the north atlantic ocean and central eurasian climate, and may explain the asymmetry.
WOS关键词	NORTH-ATLANTIC OSCILLATION ; SEA-SURFACE TEMPERATURE ; OCEAN-ATMOSPHERE MODEL ; MULTIDECADAL OSCILLATION ; GLOBAL CLIMATE ; THERMOHALINE CIRCULATION ; GENERAL-CIRCULATION ; EUROPEAN CLIMATE ; ICE VARIABILITY ; AIR-TEMPERATURE
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000384549500008
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2375073
专题	中国科学院大学
通讯作者	Hao, Xin
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, Nansen Zhu Int Res Ctr, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Climate Change Res Ctr, Beijing, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Hao, Xin,He, Shengping,Wang, Huijun. Asymmetry in the response of central eurasian winter temperature to amo[J]. Climate dynamics,2016,47(7-8):2139-2154.
APA	Hao, Xin,He, Shengping,&Wang, Huijun.(2016).Asymmetry in the response of central eurasian winter temperature to amo.Climate dynamics,47(7-8),2139-2154.
MLA	Hao, Xin,et al."Asymmetry in the response of central eurasian winter temperature to amo".Climate dynamics 47.7-8(2016):2139-2154.

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