Interannual polar motion with relation to the North Atlantic Oscillation

	Interannual polar motion with relation to the North Atlantic Oscillation
	Zhou, YH ; Zheng, DW ; Zhao, M ; Chao, BF
刊名	GLOBAL AND PLANETARY CHANGE
	1998-09-01
卷号	18 期号:3-4 页码:79-84
关键词	North Atlantic Oscillation interannual polar motion north-south seesaw
英文摘要	The North Atlantic Oscillation (NAO) is an interannual, north-south seesaw in the atmosphere and ocean. The associated motion and mass redistribution will inevitably cause variations in the Earth's polar motion. The present paper studies the relation of NAO with interannual polar motion. Two monthly series for the period of 1964-1994 are employed: the NAO index (NAOI), which is used as a proxy to measure the intensity of NAG, and the polar motion series. The latter is further processed to obtain the interannual polar motion excitation function psi by deconvolution and subsequent removal of the drift, the seasonal terms and short period variations. The time-domain cross correlation and frequency-domain coherence studies show significant correlations between NAOI and psi especially on the x-component of psi as anticipated from the general pattern of NAG. This suggests possible significant contribution of NAO in exciting interannual polar motion. (C) 1998 Elsevier Science B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geography, Physical ; Geosciences, Multidisciplinary
研究领域[WOS]	Physical Geography ; Geology
关键词[WOS]	SEA-SURFACE TEMPERATURE ; SOUTHERN OSCILLATION ; ATMOSPHERIC EXCITATION ; GEOPOTENTIAL HEIGHT ; EARTHS WOBBLE ; EL-NINO ; HEMISPHERE ; SEASONALITY ; LENGTH ; FIELDS
收录类别	ISTP ; SCI
语种	英语
WOS记录号	WOS:000075509900002
公开日期	2010-07-30
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/10264]
专题	上海天文台_天文地球动力学研究中心
作者单位	1.Acad Sinica, Shanghai Observ, Shanghai 200030, Peoples R China 2.NASA, Terr Phys Lab, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
推荐引用方式 GB/T 7714	Zhou, YH,Zheng, DW,Zhao, M,et al. Interannual polar motion with relation to the North Atlantic Oscillation[J]. GLOBAL AND PLANETARY CHANGE,1998,18(3-4):79-84.
APA	Zhou, YH,Zheng, DW,Zhao, M,&Chao, BF.(1998).Interannual polar motion with relation to the North Atlantic Oscillation.GLOBAL AND PLANETARY CHANGE,18(3-4),79-84.
MLA	Zhou, YH,et al."Interannual polar motion with relation to the North Atlantic Oscillation".GLOBAL AND PLANETARY CHANGE 18.3-4(1998):79-84.