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    Deep ocean changes near the Western Boundary of the South Pacific Ocean

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    jpo-d-12-0182.1.pdf (1.997Mb)
    Date
    2013-10
    Author
    Sloyan, Bernadette M.  Concept link
    Wijffels, Susan E.  Concept link
    Tilbrook, Bronte  Concept link
    Katsumata, Katsuro  Concept link
    Murata, Akihiko  Concept link
    Macdonald, Alison M.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/6304
    As published
    https://doi.org/10.1175/JPO-D-12-0182.1
    DOI
    10.1175/JPO-D-12-0182.1
    Keyword
     Circulation/ Dynamics; Waves; Oceanic 
    Abstract
    Repeated occupations of two hydrographic sections in the southwest Pacific basin from the 1990s to 2000s track property changes of Antarctic Bottom Water (AABW). The largest property changes—warming, freshening, increase in total carbon, and decrease in oxygen—are found near the basin’s deep western boundary between 50° and 20°S. The magnitude of the property changes decreases with increasing distance from the western boundary. At the deep western boundary, analysis of the relative importance of AABW (γn > 28.1 kg m−3) freshening, heating, or isopycnal heave suggests that the deep ocean stratification change is the result of both warming and freshening processes. The consistent deep ocean changes near the western boundary of the southwest Pacific basin dispel the notion that the deep ocean is quiescent. High-latitude climate variability is being directly transmitted into the deep southwest Pacific basin and the global deep ocean through dynamic deep western boundary currents.
    Description
    Author Posting. © American Meteorological Society, 2013. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 43 (2013): 2132–2141, doi:10.1175/JPO-D-12-0182.1.
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    • Physical Oceanography (PO)
    Suggested Citation
    Journal of Physical Oceanography 43 (2013): 2132–2141
     

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