DOI: 10.1175/JCLI-D-12-00137.1
Scopus记录号: 2-s2.0-84883187053
论文题名: Control of decadal and bidecadal climate variability in the tropical pacific by the off-equatorial South Pacific Ocean
作者: Tatebe H. ; Imada Y. ; Mori M. ; Kimoto M. ; Hasumi H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 17 起始页码: 6524
结束页码: 6534
语种: 英语
Scopus关键词: Climate variability
; Model experiments
; Ocean temperature
; Partial blocking
; South pacific oceans
; Subsurface temperature
; Subtropical mode waters
; Wind stress curl
; Climatology
; Tropics
; Wind stress
; Oceanography
; air-sea interaction
; climate feedback
; climate forcing
; climate variation
; decadal variation
; feedback mechanism
; salinity
; sea surface temperature
; tracer
; wind stress
; Pacific Ocean
; Pacific Ocean (South)
; Pacific Ocean (Tropical)
英文摘要: Delayed negative feedback processes determining intrinsic decadal and bidecadal time scales for the tropical variability in the Pacific are investigated based on climate model experiments. By comparing a control run driven by preindustrial forcing and partial blocking runs driven by the same forcing but with ocean temperature and salinity restored to climatology in selected regions, subsurface oceanic signals of South Pacific origin are shown to precede SST variability in the Ni~no-3.4 region. Using a linear reduced-gravity ocean model driven only by wind stress changes and an offline tracer model, oceanic wave adjustment triggered by changes of wind stress curl in the South Pacific extratropics is suggested to be essential for the decadal component of the equatorial SST, while slower isopycnal advection of subsurface temperature anomalies from the formation region of South Pacific Eastern Subtropical Mode Water controls the bidecadal component. The intrinsic time scales of the tropical variability are regulated by simple linear ocean dynamics. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51703
Appears in Collections: 气候变化事实与影响
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作者单位: Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan; Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan
Recommended Citation:
Tatebe H.,Imada Y.,Mori M.,et al. Control of decadal and bidecadal climate variability in the tropical pacific by the off-equatorial South Pacific Ocean[J]. Journal of Climate,2013-01-01,26(17)