DOI: 10.1175/JCLI-D-12-00415.1
Scopus记录号: 2-s2.0-84884256290
论文题名: Interdecadal amplitude modulation of El niño-southern oscillation and its impact on tropical pacific decadal variability
作者: Ogata T. ; Xie S.-P. ; Wittenberg A. ; Sun D.Z.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 18 起始页码: 7280
结束页码: 7297
语种: 英语
Scopus关键词: Control integration
; Empirical Orthogonal Function
; Geophysical fluid dynamics laboratories
; Ocean general circulation models
; Pacific decadal variabilities
; Sea surface temperature (SST)
; Subsurface temperature
; Temperature anomaly
; Amplitude modulation
; Atmospheric pressure
; Stream flow
; Tropics
; Oceanography
; air-sea interaction
; amplitude
; atmospheric modeling
; climate modeling
; decadal variation
; El Nino-Southern Oscillation
; empirical analysis
; numerical model
; observational method
; sea surface temperature
; thermocline
; wind forcing
; Pacific Ocean
; Pacific Ocean (Tropical)
英文摘要: The amplitude of El Niño-Southern Oscillation (ENSO) displays pronounced interdecadal modulations in observations. The mechanisms for the amplitude modulation are investigated using a 2000-yr preindustrial control integration from the Geophysical Fluid Dynamics Laboratory Climate Model, version 2.1 (GFDL CM2.1). ENSO amplitude modulation is highly correlated with the second empirical orthogonal function (EOF) mode of tropical Pacific decadal variability (TPDV), which features equatorial zonal dipoles in sea surface temperature (SST) and subsurface temperature along the thermocline. Experiments with an ocean general circulation model indicate that both interannual and decadal-scale wind variability are required to generate decadal-scale tropical Pacific temperature anomalies at the sea surface and along the thermocline. Even a purely interannual and sinusoidal wind forcing can produce substantial decadal-scale effects in the equatorial Pacific, with SST cooling in the west, subsurface warming along the thermocline, and enhanced upper-ocean stratification in the east. A mechanism is proposed by which residual effects of ENSO could serve to alter subsequent ENSO stability, possibly contributing to long-lasting epochs of extreme ENSO behavior via a coupled feedback with TPDV. © 2013 American Meteorological Society. 资助项目: NSF, National Science Foundation
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51658
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: International Pacific Research Center, Honolulu, HI, United States; International Pacific Research Center, Department of Meteorology, University of Hawai'i at Mánoa, Honolulu, HI, United States; Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States; University of Colorado Boulder, NOAA/Earth System Research Laboratory, Boulder, CO, United States; Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan; Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States
Recommended Citation:
Ogata T.,Xie S.-P.,Wittenberg A.,et al. Interdecadal amplitude modulation of El niño-southern oscillation and its impact on tropical pacific decadal variability[J]. Journal of Climate,2013-01-01,26(18)