Wind stress forcing of the North Sea 'pole tide'

	Wind stress forcing of the North Sea 'pole tide'
	O'Connor, WP ; Chao, BF ; Zheng, DW ; Au, AY
刊名	GEOPHYSICAL JOURNAL INTERNATIONAL
	2000-08-01
卷号	142 期号:2 页码:620-630
关键词	Chandler wobble North Sea pole tide sea level tides winds
英文摘要	We conduct numerical simulations of the wind forcing of sea level variations in the North Sea using a barotropic ocean model with realistic geography and bathymetry to examine the forcing of the 14 month 'pole tide', which is known to be anomalously large along the Denmark-Netherlands coast. The simulation input is the monthly mean surface wind stress field from the National Centers for Environmental Prediction (NCEP) reanalysis for the 40 year period 1958-1997. The ocean model output sea level response is then compared with 10 coastal tide gauge records from the Permanent Service for Mean Sea Level (PSMSL) over the same period of time. Besides the strong seasonal variations, several prominent quasi-periodicities exist near 7 years, 3 years, 14 months, 9 months and 6.5 months. Correlations and spectral analyses show remarkable agreement between the model output and the observations, particularly in the 14 month, or Chandler, period band. The latter indicates that the enhanced pole tide found in the North Sea along the Denmark-Netherlands coast is actually the coastal set-up response to wind stress forcing with a periodicity of around 14 months. We find no need to invoke a geophysical explanation involving resonance enhancement of the pole tide in the North Sea to explain the observations.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geochemistry & Geophysics
研究领域[WOS]	Geochemistry & Geophysics
关键词[WOS]	EUROPEAN CONTINENTAL-SHELF ; STORM-SURGE MODEL ; NUMERICAL-MODEL ; GLOBAL OCEANS ; DYNAMICS ; CIRCULATION ; LEVEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000088482700025
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/28272]
专题	上海天文台_天文地球动力学研究中心
作者单位	1.NASA, Goddard Space Flight Ctr, Space Geodesy Branch, Greenbelt, MD 20771 USA 2.NOAA, NOS, Coast Survey Dev Lab, Silver Spring, MD 20910 USA 3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 4.Raytheon ITSS, Lanham, MD 20706 USA
推荐引用方式 GB/T 7714	O'Connor, WP,Chao, BF,Zheng, DW,et al. Wind stress forcing of the North Sea 'pole tide'[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2000,142(2):620-630.
APA	O'Connor, WP,Chao, BF,Zheng, DW,&Au, AY.(2000).Wind stress forcing of the North Sea 'pole tide'.GEOPHYSICAL JOURNAL INTERNATIONAL,142(2),620-630.
MLA	O'Connor, WP,et al."Wind stress forcing of the North Sea 'pole tide'".GEOPHYSICAL JOURNAL INTERNATIONAL 142.2(2000):620-630.