DOI: 10.1002/2014GL061449
论文题名: Observed interannual variability of zonal currents in the equatorial Indian Ocean thermocline and their relation to Indian Ocean Dipole
作者: Zhang D. ; McPhaden M.J. ; Lee T.
刊名: Geophysical Research Letters
ISSN: 0094-9601
EISSN: 1944-9332
出版年: 2014
卷: 41, 期: 22 起始页码: 7933
结束页码: 7941
语种: 英语
英文关键词: climate variability
; Indian Ocean Dipole
; ocean circulation
; thermocline currents
; tropical Indian Ocean
Scopus关键词: Atmospheric temperature
; Climate change
; Feedback
; Ocean currents
; Rain
; Stream flow
; Surface waters
; Climate variability
; Eastern equatorial Indian ocean
; Indian Ocean dipole
; Meridional overturning cell
; Meridional overturning circulations
; Ocean circulation
; Sea surface temperature (SST)
; Tropical Indian ocean
; Oceanography
; air-sea interaction
; annual variation
; climate variation
; geostrophic flow
; meridional circulation
; oceanic circulation
; sea surface temperature
; thermocline
; Indian Ocean
; Indian Ocean (Equatorial)
英文摘要: Interannual variability of zonal currents in the eastern equatorial Indian Ocean thermocline is significantly correlated with sea surface temperature (SST) in the eastern pole of the Indian Ocean Dipole (IOD). This relationship is more significant than for zonal currents and the Dipole Mode Index, the latter of which measures zonal SST anomaly gradient. The variability of zonal currents in the thermocline is consistent with the variations of eastward pressure gradient force in the thermocline and the equatorward geostrophic thermocline flows associated with the shallow meridional overturning circulations in the eastern tropical Indian Ocean. Our analysis suggests a positive feedback between zonal currents in the thermocline and SST in the eastern pole of IOD. The combination of equatorial wind and off-equatorial wind stress curls associated with SST anomalies in the eastern pole of the IOD drives interannual variability in equatorial zonal thermocline flows and its covariability with the shallow meridional overturning cells. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84915735039&doi=10.1002%2f2014GL061449&partnerID=40&md5=fee7b621b81aebabce8f7894d7751093
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6865
Appears in Collections: 气候减缓与适应
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作者单位: JISAO, University of Washington, Seattle, WA, United States
Recommended Citation:
Zhang D.,McPhaden M.J.,Lee T.. Observed interannual variability of zonal currents in the equatorial Indian Ocean thermocline and their relation to Indian Ocean Dipole[J]. Geophysical Research Letters,2014-01-01,41(22).