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    Highly resolved observations and simulations of the ocean response to a hurricane

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    Article (348.8Kb)
    Additional file information (2.048Kb)
    Figure S1: Pre-Frances T(z), S(z). (370.4Kb)
    Figure S2: The stress vectors from Table S2. (344.5Kb)
    Figure S3: Wind speed as a function of radius. (230.8Kb)
    Table S1: The ocean IC used in the model. (334.3Kb)
    Table S2: The hurricane wind stress field derived from HWIND analysis of Frances observations. (1.669Kb)
    Date
    2007-07-07
    Author
    Sanford, Thomas B.  Concept link
    Price, James F.  Concept link
    Girton, James B.  Concept link
    Webb, Douglas C.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3342
    As published
    https://doi.org/10.1029/2007GL029679
    DOI
    10.1029/2007GL029679
    Keyword
     Hurricane-ocean interaction; Wind stress and inertial motions; Hurricane wake; Numerical upper ocean model; Instruments and methods 
    Abstract
    An autonomous, profiling float called EM-APEX was developed to provide a quantitative and comprehensive description of the ocean side of hurricane-ocean interaction. EM-APEX measures temperature, salinity and pressure to CTD quality and relative horizontal velocity with an electric field sensor. Three prototype floats were air-deployed into the upper ocean ahead of Hurricane Frances (2004). All worked properly and returned a highly resolved description of the upper ocean response to a category 4 hurricane. At a float launched 55 km to the right of the track, the hurricane generated large amplitude, inertially rotating velocity in the upper 120 m of the water column. Coincident with the hurricane passage there was intense vertical mixing that cooled the near surface layer by about 2.2°C. We find consistent model simulations of this event provided the wind stress is computed from the observed winds using a high wind-speed saturated drag coefficient.
    Description
    Author Posting. © American Geophysical Union, 2007. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 34 (2007): L13604, doi:10.1029/2007GL029679.
    Collections
    • Physical Oceanography (PO)
    Suggested Citation
    Geophysical Research Letters 34 (2007): L13604
     

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