Decadal Variability of Subsurface Temperature in the Central North Pacific |
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Authors: | Satoshi Sugimoto Takashi Yoshida Tadashi Ando |
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Affiliation: | (1) Climate and Marine Department, Japan Meteorological Agency, Chiyoda-ku, Tokyo 100-8122, Japan |
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Abstract: | Decadal variability of subsurface temperature in the North Pacific has been investigated. Two dominant regions were found; the central subarctic region (CSa) and the north-eastern subtropical region (NESt). In CSa, cooling (warming) of wintertime subsurface temperature corresponds to the large (small) temperature gradient and southward (northward) shift of subsurface temperature front, associated with the increase (decrease) of positive wind stress curl and the southward (northward) shift of curl τ zero line with 2 years delay. It is suggested that the relocation of subtropical-subarctic boundary plays an important role. In NESt, importance of heat flux through the sea surface and heat divergence in the Ekman layer is also discussed. This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | Decadal variability subsurface temperature North Pacific wind stress curl heat flux |
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