DOI: 10.1175/JCLI-D-13-00390.1
Scopus记录号: 2-s2.0-84896978114
论文题名: Rectification of el niño-southern oscillation into climate anomalies of decadal and longer time scales: Results from forced ocean GCM experiments
作者: Sun D.-Z. ; Zhang T. ; Sun Y. ; Yu Y.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 7 起始页码: 2545
结束页码: 2561
语种: 英语
Scopus关键词: Atmospheric pressure
; Climate change
; Experiments
; Time measurement
; Wind stress
; Climate anomalies
; Interannual fluctuations
; Nonlinear dynamic heating
; Pattern features
; Rectification effects
; Spatial patterns
; Surface wind stress
; Temperature differences
; Oceanography
; climate change
; climate forcing
; decadal variation
; El Nino-Southern Oscillation
; oceanic general circulation model
; surface wind
; warming
; wind stress
; Pacific Ocean
; Pacific Ocean (Tropical)
英文摘要: To better understand the causes of climate change in the tropical Pacific on the decadal and longer time scales, the rectification effect of ENSO events is delineated by contrasting the time-mean state of two forced ocean GCM experiments. In one of them, the long-term mean surface wind stress of 1950-2011 is applied, while in the other, the surface wind stress used is the long-term mean surface wind stress of 1950-2011 plus the interannual monthly anomalies over the period. Thus, the long-term means of the surface wind stress in the two runs are identical. The two experiments also use the same relaxation boundary conditions, that is, the SST is restored to the same prescribed values. The two runs, however, are found to yield significantly different mean climate for the tropical Pacific. The mean state of the run with interannual fluctuations in the surface winds is found to have a cooler warm pool, warmer thermocline water, and warmer eastern surface Pacific than the run without interannual fluctuations in the surface winds. The warming of the eastern Pacific has a pattern that resembles the observed decadal warming. In particular, the pattern features an off-equator maximum as the observed decadal warming. The spatial pattern of the time-mean upper-ocean temperature differences between the two experiments is shown to resemble that of the differences in the nonlinear dynamic heating, underscoring the role of the nonlinear ocean dynamics in the rectification. The study strengthens the suggestion that rectification of ENSO can be a viable mechanism for climate change of decadal and longer time scales. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51085
Appears in Collections: 气候变化事实与影响
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作者单位: Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; NOAA/Eart System Research Laboratory/Physical Science Division, Boulder, CO, United States; Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Sun D.-Z.,Zhang T.,Sun Y.,et al. Rectification of el niño-southern oscillation into climate anomalies of decadal and longer time scales: Results from forced ocean GCM experiments[J]. Journal of Climate,2014-01-01,27(7)