DOI: 10.1175/JCLI-D-13-00318.1
Scopus记录号: 2-s2.0-84893928633
论文题名: A coupled decadal prediction of the dynamic state of the kuroshio extension system
作者: Qiu B. ; Chen S. ; Schneider N. ; Taguchi B.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 4 起始页码: 1751
结束页码: 1764
语种: 英语
英文摘要: Being the extension of a wind-driven western boundary current, the Kuroshio Extension (KE) has long been recognized as a turbulent current system rich in large-amplitude meanders and energetic pinched-off eddies. An important feature emerging from recent satellite altimeter measurements and eddy-resolving ocean model simulations is that the KE system exhibits well-defined decadal modulations between a stable and an unstable dynamic state. Here the authors show that the decadally modulatingKE dynamic state can be effectively defined by the sea surface height (SSH) anomalies in the 318-368N, 1408-1658E region. By utilizing the SSH-based KE index from 1977 to 2012, they demonstrate that the time-varying KE dynamic state can be predicted at lead times of up to ~6 yr. This long-term predictability rests on two dynamic processes: 1) the oceanic adjustment is via baroclinic Rossby waves that carry interior wind-forced anomalies westward into the KE region and 2) the low-frequency KE variability influences the extratropical storm tracks and surface wind stress curl field across the North Pacific basin. By shifting poleward (equatorward) the storm tracks and the large-scale wind stress curl pattern during its stable (unstable) dynamic state, the KE variability induces a delayed negative feedback that can enhance the predictable SSH variance on the decadal time scales. © 2014 American Meteorological Society. 资助项目: NSF, National Science Foundation
; NASA, National Aeronautics and Space Administration
; JSPS, Japan Society for the Promotion of Science
; JSPS, Japan Society for the Promotion of Science
; MEXT, Ministry of Education, Culture, Sports, Science, and Technology
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50948
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Oceanography, University of Hawai'i at Manoa, Honolulu, HI, United States; Earth Simulator Center, JAMSTEC, Yokohama, Japan
Recommended Citation:
Qiu B.,Chen S.,Schneider N.,et al. A coupled decadal prediction of the dynamic state of the kuroshio extension system[J]. Journal of Climate,2014-01-01,27(4)