DOI: 10.1175/JCLI-D-13-00227.1
Scopus记录号: 2-s2.0-84898046976
论文题名: Variations of the North Pacific subtropical mode water from direct observations
作者: Rainville L. ; Jayne S.R. ; Cronin M.F.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 8 起始页码: 2842
结束页码: 2860
语种: 英语
Scopus关键词: Hydrographic surveys
; Ocean currents
; Direct observations
; Float measurements
; Interannual time scale
; Kuroshio Extension
; Oceanic heat contents
; Recirculation gyre
; Seasonal and interannual variability
; Subtropical mode waters
; Enthalpy
; gyre
; measurement method
; mesoscale eddy
; mode water
; sea surface height
; Kuroshio Extension
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: Mooring measurements from the Kuroshio Extension System Study (June 2004-June 2006) and from the ongoing Kuroshio Extension Observatory (June 2004-present) are combined with float measurements of the Argo network to study the variability of the North Pacific Subtropical ModeWater (STMW) across the entire gyre, on time scales fromdays, to seasons, to a decade. The top of the STMWfollows a seasonal cycle, although observations reveal that it primarily varies in discrete steps associated with episodic wind events. The variations of the STMWbottom depth are tightly related to the sea surface height (SSH), reflecting mesoscale eddies and large-scale variations of the Kuroshio Extension and recirculation gyre systems.Using the observed relationship between SSH and STMW, gridded SSH products and in situ estimates from floats are used to construct weekly maps of STMWthickness, providing nonbiased estimates of STMWtotal volume, annual formation and erosion volumes, and seasonal and interannual variability for the past decade. Year-to-year variations are detected, particularly a significant decrease of STMW volume in 2007-10 primarily attributable to a smaller volume formed. Variability of the heat content in the mode water region is dominated by the seasonal cycle and mesoscale eddies; there is only a weak link to STMWon interannual time scales, and no long-term trends in heat content and STMW thickness between 2002 and 2011 are detected. Weak lagged correlations among air-sea fluxes, oceanic heat content, and STMW thickness are found when averaged over the northwestern Pacific recirculation gyre region. © 2014 American Meteorological Society. 资助项目: NOAA, National Science Foundation
; NSF, National Science Foundation
; NSF, National Science Foundation
; NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51383
Appears in Collections: 气候变化事实与影响
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作者单位: Applied Physics Laboratory, University of Washington, Seattle, WA, United States; Physical Oceanography Department, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; NOAA/Pacific Marine Environmental Laboratory, Seattle, WA, United States
Recommended Citation:
Rainville L.,Jayne S.R.,Cronin M.F.. Variations of the North Pacific subtropical mode water from direct observations[J]. Journal of Climate,2014-01-01,27(8)