The Subtropical Mode Water Circulation in the North Pacific

書誌事項

公開日
1995-05
DOI
  • 10.1175/1520-0485(1995)025<0958:tsmwci>2.0.co;2
公開者
American Meteorological Society

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説明

Abstract Historical hydrographic data are analyzed to investigate the seasonal variation of the subsurace pycnostad in the northwestern part of the North Pacific and to relate it to the circulation of subtropical mode water (STMW). A gyre-scale scheme of STMW circulation is deduced based on its observed climatological formation area and climatological geostrophic flow fields. The deduced circulation is supported by climatological features of the subsurface hydrography presented separately for the non-large-meander period and the large-meander period of the Kuroshio: zonal and meridional sections and isopycnal maps of potential vorticity and apparent oxygen utilization. The Kuroshio Countercurrent composing the Kuroshio recirculation system advects STMW formed in the wintertime thick mixed layer immediately off the Kuroshio and the Kuroshio Extension. During the non-large-meander period, the recirculation system has a single anticyclonic gyre centered near 30°N, 137°E and advects STMW formed off the Kurosh...

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