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    Decadal variability of the upper ocean heat content in the East/Japan Sea and its possible relationship to northwestern Pacific variability

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    2011JC007369.pdf (4.416Mb)
    Date
    2012-02-09
    Author
    Na, Hanna  Concept link
    Kim, Kwang-Yul  Concept link
    Chang, Kyung-Il  Concept link
    Park, Jong Jin  Concept link
    Kim, Kuh  Concept link
    Minobe, Shoshiro  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/5084
    As published
    https://doi.org/10.1029/2011JC007369
    DOI
    10.1029/2011JC007369
    Keyword
     East/Japan Sea; Decadal variability; Heat content; Northwestern Pacific 
    Abstract
    The upper ocean heat content variability in the East/Japan Sea was investigated using a 40 year temperature and salinity data set from 1968 to 2007. Decadal variability was identified as the dominant mode of variability in the upper ocean (0–300 m) aside from the seasonal cycle. The decadal variability is strong to the west of northern Honshu, west of the Tsugaru Strait, and west of southern Hokkaido. Temperature anomalies at 50–125 m exhibit a large contribution to the decadal variability, particularly in the eastern part of the East/Japan Sea. The vertical structure of regressed temperature anomalies and the spatial patterns of regressed 10°C isotherms in the East/Japan Sea suggest that the decadal variability is related to upper ocean circulation in the East/Japan Sea. The decadal variability also exhibits an increasing trend, which indicates that the regions showing large decadal variations experienced warming on decadal time scales. Further analysis shows that the decadal variability in the East/Japan Sea is not locally isolated but is related to variability in the northwestern Pacific.
    Description
    Author Posting. © American Geophysical Union, 2012. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 117 (2012): C02017, doi:10.1029/2011JC007369.
    Collections
    • Physical Oceanography (PO)
    Suggested Citation
    Journal of Geophysical Research 117 (2012): C02017
     

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