Dominant modes of geopotential height in the northern hemisphere in summer on interdecadal timescales

IOCAS-IR

	Dominant modes of geopotential height in the northern hemisphere in summer on interdecadal timescales
	Yang YX(杨宇星); Huang F(黄菲); Wang H(王宏)
发表期刊	Chinese Journal of Oceanology and Limnology
ISSN	0254-4059
	2013-09-15
出版年	2013
卷号	v.31 期号:05 页码:188-196
文献类型	CNKI期刊论文
摘要	Empirical orthogonal function(EOF) analysis is performed on the field of the northern hemisphere geopotential height at 200-hPa using a 54-year(1958-2011) record of summer data on an interdecadal time scale.The first dominant mode,which shows smooth semi-hemispheric variation with maximum action centers in the western hemisphere in the mid-latitudes over the eastern Pacific,North America,and the North Atlantic,is related to global warming.The second mode,which has a pronounced tropical-extratropical alternating pattern with active centers located over the eastern hemisphere from Western Europe across East Asia to the western Pacific,has a close relationship with the Arctic Oscillation.Further analysis results indicate that the two dominant modes show good correlation with the Arctic sea ice concentration(SIC),with correlation coefficients between these two modes and the first two EOF modes of the Arctic SIC reaching 0.88 and 0.86,respectively.
关键词	dominant mode interdecadal variation global warming Arctic Oscillation
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A009;
CNKI专题名称	气象学;
分类号	P461
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the National Basic Research Program of China(973Program)(No.2010CB951403,2012CB955604,2012CB417402,and 2010CB950402) ; the National Natural Science Foundation of China(No.41106018)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/190742
专题	中国科学院海洋研究所
作者单位	1.InstituteofOceanology,ChineseAcademyofScience 2.PhysicalOceanographyLaboratoryandKeyLaboratoryofOcean-AtmosphereInteractionandClimateinUniversitiesofShandong,OceanUniversityofChina
推荐引用方式 GB/T 7714	Yang YX,Huang F,Wang H. Dominant modes of geopotential height in the northern hemisphere in summer on interdecadal timescales. 2013.