DOI: 10.1175/JCLI-D-15-0322.1
Scopus记录号: 2-s2.0-84957101252
论文题名: ENSO-like variability: 1900-2013
作者: Chen X. ; Wallace J.M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 24 起始页码: 9623
结束页码: 9641
语种: 英语
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Climate change
; Climatology
; Sea level
; Submarine geophysics
; Surface properties
; Surface waters
; Water waves
; ENSO
; Inter-decadal variability
; Interannual variability
; Pacific decadal oscillation
; Sea surface temperature (SST)
; Southern oscillation
; Variability
; Oceanography
; annual variation
; atmospheric structure
; climate variation
; decadal variation
; El Nino-Southern Oscillation
; longwave radiation
; Northern Hemisphere
; Pacific Decadal Oscillation
; principal component analysis
; sea level pressure
; sea surface temperature
; water temperature
; North America
; Pacific Ocean
英文摘要: ENSO-like variability is examined using a set of univariate indices based on unfiltered monthly global sea surface temperature (SST), sea level pressure (SLP), outgoing longwave radiation (OLR), sea level, and the three-dimensional ocean temperature (OT) fields. These indices, many of which correspond to the leading principal components (PCs) of the respective global fields, are highly correlated with each other. In combination with their spatial regression patterns, they provide a comprehensive description of ENSO-like variability in the atmosphere and ocean across time scales ranging from months to decades, from 1950 onward. The SLP and SST indices are highly correlated with one another back to the late nineteenth century. The interdecadal-scale shifts in the prevailing polarity of ENSO that occurred in the 1940s, the 1970s, and around the year 2000 are clearly evident in low-pass-filtered time series of these indices. On the basis of empirical mode decomposition, ENSO-like variability is partitioned into an interannual "ENSO cycle," to which equatorial ocean wave dynamics imparts a distinctive equatorial signature, and a red noise background continuum, most prominent on the interdecadal time scale, which resembles the ENSO-like variability in some models in which the atmosphere is coupled to a slab ocean. The background continuum bears the imprint of the Pacific-North American (PNA) pattern, the leading mode of the Northern Hemisphere wintertime variability of the atmospheric circulation over the Pacific sector. The superposition of the ENSO cycle and the background continuum imparts a distinctive frequency dependence to the patterns of ENSO-like climate variability. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50425
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao, China; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
Recommended Citation:
Chen X.,Wallace J.M.. ENSO-like variability: 1900-2013[J]. Journal of Climate,2015-01-01,28(24)