Southern ocean response to relative velocity wind stress forcing

David K. Hutchinson, Andrew Mc C. Hogg*, Jeffrey R. Blundell

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    21 Citations (Scopus)

    Abstract

    An eddy-resolving quasigeostrophic model of the Southern Ocean coupled to a dynamic atmospheric mixed layer is used to compare the performance of two different wind stress parameterization schemes. The first is the standard quadratic drag law, based on atmospheric velocity alone, whereas the second (more exact) formulation is based on the difference between ocean and atmosphere velocities. The two different schemes give very similar magnitudes of mean stress; however, the relative velocity scheme has substantially lower power input, resulting in a weaker eddy field, and consequently, greater circumpolar transport. These results are explored in terms of the existing theories of the Antarctic Circumpolar Current (including eddy saturation and eddy damping) and the implications for modeling the Southern Ocean are discussed.

    Original languageEnglish
    Pages (from-to)326-339
    Number of pages14
    JournalJournal of Physical Oceanography
    Volume40
    Issue number2
    DOIs
    Publication statusPublished - Feb 2010

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