DOI: 10.1175/JCLI-D-14-00700.1
Scopus记录号: 2-s2.0-84942895929
论文题名: Decadal characterization of Indo-Pacific Ocean subsurface temperature modes in SODA reanalysis
作者: Vargas-Hernández J.M. ; Wijffels S.E. ; Meyers G. ; do Couto A.B. ; Holbrook N.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 15 起始页码: 6113
结束页码: 6132
语种: 英语
Scopus关键词: Atmospheric temperature
; Orthogonal functions
; Stream flow
; Surface waters
; Time series analysis
; Atlantic multidecadal oscillations
; Decadal variability
; Empirical orthogonal function analysis
; Inter-decadal pacific oscillations
; Multidecadal variability
; Oceanic variabilities
; Sea surface temperature anomalies
; Simple ocean data assimilations
; Oceanography
; atmospheric dynamics
; cooling
; data assimilation
; decadal variation
; empirical analysis
; sea surface temperature
; thermocline
; warming
; Indian Ocean
; Indian Ocean (South)
; Pacific Ocean
; Pacific Ocean (West)
英文摘要: Studies of decadal-to-multidecadal ocean subsurface temperature variability are fundamental to improving the understanding of low-frequency climate signals. The present study uses the Simple Ocean Data Assimilation (SODA) version 2.2.4 product for the period 1950-2007 to identify decadal modes of variability that characterize the upper Indo-Pacific Ocean temperature structure (5-466-m depth). An empirical orthogonal function (EOF) analysis of the 10-yr low-pass filtered temperature field applied across four depths shows that the dominant mode is characterized by a long-term temperature trend, with warming at the surface and cooling at the thermocline depth connecting the tropical western Pacific with the southern Indian Ocean via the Indonesian Seas. EOF analysis of the detrended 10-yr filtered temperature data and correlation analyses of the EOF time series with established large-scale climate indices identified the interdecadal Pacific oscillation as EOF1, the North Pacific Gyre Oscillation as EOF2, and the decadal component of ElNiñoModoki as EOF3 (respectively,modes 2, 3, and 4 of the nondetrended data). EOF2 identifies the Atlantic multidecadal oscillation when the analysis is applied to sea surface temperature anomalies only, suggesting that the surface is forced dominantly by fluxes associated with global-scaleweather patterns, while the subsurface is dominantly forced by internal dynamics of the Pacific Ocean. This paper demonstrates that the decadal-to-interdecadal temperature variability in SODA has a pronounced vertical extension through the upper ocean. The upper thermocline accounts for most of the variance in the analysis. These results reinforce the importance of examining the subsurface ocean in climate dynamics studies that seek to understand the ocean's role. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50575
Appears in Collections: 气候变化事实与影响
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作者单位: Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia; CSIRO Oceans and Atmosphere Flagship, Hobart, TAS, Australia; Laboratorio de Oceanografía y Manejo Costero, Departamento de Física, Universidad Nacional de Costa Rica, Heredia, Costa Rica; Centre for Australian Weather and Climate Research, CSIRO Oceans and Atmosphere Flagship, Hobart, TAS, Australia; Marine and Environmental Sciences Centre, Centro de Oceanografia, Universidade de Lisboa, Lisbon, Portugal; ARC Centre of Excellence for Climate System Science, Hobart, TAS, Australia
Recommended Citation:
Vargas-Hernández J.M.,Wijffels S.E.,Meyers G.,et al. Decadal characterization of Indo-Pacific Ocean subsurface temperature modes in SODA reanalysis[J]. Journal of Climate,2015-01-01,28(15)