DOI: 10.1175/JCLI-D-11-00641.1
Scopus记录号: 2-s2.0-84861414412
论文题名: Potential predictability of interannual variability in the Kuroshio extension jet speed in an eddy-resolving OGCM
作者: Nonaka M. ; Sasaki H. ; Taguchi B. ; Nakamura H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 10 起始页码: 3645
结束页码: 3652
语种: 英语
Scopus关键词: Climate prediction
; Interannual variability
; North Pacific Ocean
; Ocean model
; Oceanic variability
; Rossby wave
; Climatology
; Experiments
; Ocean currents
; Speed
; accuracy assessment
; annual variation
; atmospheric forcing
; flow velocity
; hindcasting
; jet flow
; numerical model
; oceanic general circulation model
; prediction
; Rossby wave
; sea surface height
; Kuroshio Extension
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: Variability in the Kuroshio Extension (KE) jet speed has been considered to impact the upper-ocean ecosystem. This study investigates potential predictability of interannual variability in the KE jet speed that could arise from the propagation time of wind-driven Rossby waves as suggested by previous studies, through prediction experiments with an eddy-resolving ocean general circulation model (OGCM) under the perfectmodel assumption. Despite the small number of experiments available because of limited computational resources, the prediction experiments with no anomalous atmospheric forcing suggest some predictability for not only broad-scale sea surface height anomalies (SSHAs) but also the frontal-scale KE jet speed. The predictability is confirmed in a 60-yr hindcast OGCM integration as a significantly high correlation (r = 0.68) of 13-month running mean time series of the anomalous KE jet speed with SSHAs that appear in the central North Pacific Ocean 3 yr earlier. Although with fewer degrees of freedom, the same lag relationship can be found between satellite-measured SSHAs and the geostrophically derived KE jet speed. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52414
Appears in Collections: 气候变化事实与影响
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作者单位: Research Institute for Global Change, JAMSTEC, Yokohama, Japan; Earth Simulator Center, JAMSTEC, Yokohama, Japan; Research Center for Advanced Science and Technology, University of Tokyo, Tokyo, Japan
Recommended Citation:
Nonaka M.,Sasaki H.,Taguchi B.,et al. Potential predictability of interannual variability in the Kuroshio extension jet speed in an eddy-resolving OGCM[J]. Journal of Climate,2012-01-01,25(10)