DOI: 10.1029/2018JC013895
Scopus记录号: 2-s2.0-85052528551
论文题名: Variability of the Iceland-Scotland Overflow Water Transport Through the Charlie-Gibbs Fracture Zone: Results From an Eddying Simulation and Observations
作者: Xu X. ; Bower A. ; Furey H. ; Chassignet E.P.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 8 起始页码: 5808
结束页码: 5823
语种: 英语
英文关键词: Charlie-Gibbs fracture zone
; eddying simulation
; Iceland-Scotland overflow water
; variability
; volume transport
英文摘要: Observations show that the westward transport of the Iceland-Scotland overflow water (ISOW) through the Charlie-Gibbs Fracture Zone (CGFZ) is highly variable. This study examines (a) where this variability comes from and (b) how it is related to the variability of ISOW transport at upstream locations in the Iceland Basin and other ISOW flow pathways. The analyses are based on a 35-year 1/12° eddying Atlantic simulation that represents well the main features of the observed ISOW in the area of interest, in particular, the transport variability through the CGFZ. The results show that (a) the variability of the ISOW transport is closely correlated with that of the barotropic transports in the CGFZ associated with the meridional displacement of the North Atlantic Current front and is possibly induced by fluctuations of large-scale zonal wind stress in the Western European Basin east of the CGFZ; (b) the variability of the ISOW transport is increased by a factor of 3 from the northern part of the Iceland Basin to the CGFZ region and transport time series at these two locations are not correlated, further suggesting that the variability at the CGFZ does not come from the upstream source; and (c) the variability of the ISOW transport at the CGFZ is strongly anticorrelated to that of the southward ISOW transport along the eastern flank of the Mid-Atlantic Ridge, suggesting an out-of-phase covarying transport between these two ISOW pathways. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113396
Appears in Collections: 气候减缓与适应
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作者单位: Center for Ocean-Atmospheric Prediction Studies, Florida State University, Tallahassee, FL, United States; Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Recommended Citation:
Xu X.,Bower A.,Furey H.,et al. Variability of the Iceland-Scotland Overflow Water Transport Through the Charlie-Gibbs Fracture Zone: Results From an Eddying Simulation and Observations[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(8)