globalchange  > 气候减缓与适应
DOI: 10.1175/JCLI-D-17-0004.1
Scopus记录号: 2-s2.0-85020128744
论文题名:
Distinguishing the Quasi-decadal and multidecadal sea level and climate variations in the pacific: Implications for the ENSO-like low-frequency variability
作者: Lyu K.; Zhang X.; Church J.A.; Hu J.; Yu J.-Y.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期:13
起始页码: 5097
结束页码: 5117
语种: 英语
英文摘要: Low-frequency sea level variations with periods longer than interannual time scales have been receiving much attention recently, with the aim of distinguishing the anthropogenic regional sea level change signal from the natural fluctuations. Based on the available sea level products, this study finds that the dominant low-frequency sea level mode in the Pacific basin has both quasi-decadal variations and a multidecadal trend reversal in the early 1990s. The dominant sea level modes on these two time scales have different tropical structures: a west-east seesaw in the tropical Pacific on the multidecadal time scale and a dipole between the western and central tropical Pacific on the quasi-decadal time scale. These two sea level modes in the Pacific basin are closely related to the ENSO-like low-frequency climate variability on respective time scales but feature distinct surface wind forcing patterns and subbasin climate processes. The multidecadal sea level mode is associated with the Pacific decadal oscillation (PDO) and Aleutian low variations in the North Pacific and tropical Pacific sea surface temperature anomalies toward the eastern basin, while the quasi-decadal sea level mode is accompanied by tropical Pacific sea surface temperature anomalies centered in the central basin along with the North Pacific part, which resembles the North Pacific Oscillation (NPO) and its oceanic expressions [i.e., the North Pacific Gyre Oscillation (NPGO) and the Victoria mode]. The authors further conclude that the ENSO-like low-frequency variability, which has dominant influences on the Pacific sea level and climate, comprises at least two distinct modes with different spatial structures on quasi-decadal and multidecadal time scales, respectively. © 2017 American Meteorological Society.
资助项目: NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48819
Appears in Collections:气候减缓与适应
气候变化与战略

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作者单位: State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; Department of Earth System Science, University of California, Irvine, Irvine, CA, United States; Commonwealth Scientific and Industrial Research Organisation Oceans and Atmosphere, Hobart, TAS, Australia; Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia; State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China

Recommended Citation:
Lyu K.,Zhang X.,Church J.A.,et al. Distinguishing the Quasi-decadal and multidecadal sea level and climate variations in the pacific: Implications for the ENSO-like low-frequency variability[J]. Journal of Climate,2017-01-01,30(13)
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