DOI: 10.1175/JCLI-D-18-0349.1
Scopus记录号: 2-s2.0-85060974658
论文题名: Pacific influences on the meridional temperature transport of the Indian Ocean
作者: Ma J. ; Feng M. ; Sloyan B.M. ; Lan J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2019
卷: 32, 期: 4 起始页码: 1047
结束页码: 1061
语种: 英语
英文关键词: Boundary currents
; ENSO
; Indian Ocean
; Mass fluxes/transport
; Meridional overturning circulation
; Ocean circulation
Scopus关键词: Atmospheric movements
; Atmospheric pressure
; Climatology
; Ocean currents
; Orthogonal functions
; Shear flow
; Boundary currents
; ENSO
; Indian ocean
; Mass fluxes/transport
; Meridional overturning circulations
; Ocean circulation
; Atmospheric temperature
英文摘要: In this study, low-frequency variability of the meridional temperature transport in the Indian Ocean is examined using a mesoscale-eddy-resolving global ocean circulation model for the period 1979-2014. The dominant empirical orthogonal function (EOF) of the meridional temperature transport is found to be highly influenced by Pacific El Niño-Southern Oscillation (ENSO) through both oceanic and atmospheric waveguides, with the southward temperature transport being stronger during La Niña and weaker during El Niño. A dynamical decomposition of the meridional streamfunction and temperature transport shows that the relative importance of different dynamic modes varies with latitude; these modes act together to contribute to the coherent ENSO response. The Ekman mode explains a larger part of low-frequency variability in overturning and temperature transport north of the equator. Between 258 and 38S, variations associated with vertical shear mode are of greater importance. The external mode has an important contribution between 308 and 258S where the western boundary currents impinge on topography. South of 258S, the variability of the external mode contribution has significant negative correlations with the vertical shear mode, suggesting that the large variability of external mode depends on the joint effects of baroclinicity and topography, such that hydrographic sections alone may not be suitable for deducing changes in the meridional temperature transport at these latitudes. © 2019 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117218
Appears in Collections: 气候变化与战略
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Recommended Citation:
Ma J.,Feng M.,Sloyan B.M.,et al. Pacific influences on the meridional temperature transport of the Indian Ocean[J]. Journal of Climate,2019-01-01,32(4)