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    A conceptual model of an Arctic sea

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    Article (641.3Kb)
    Additional file information (1.101Kb)
    Figure S1: Interannual variability of the model variables and forcings (see section 3 for definition of the symbols). (1.540Mb)
    Date
    2012-06-20
    Author
    St-Laurent, Pierre  Concept link
    Straneo, Fiamma  Concept link
    Barber, David G.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/5262
    As published
    https://doi.org/10.1029/2011JC007652
    DOI
    10.1029/2011JC007652
    Keyword
     Arctic; Models; Sea ice 
    Abstract
    We propose a conceptual model for an Arctic sea that is driven by river runoff, atmospheric fluxes, sea ice melt/growth, and winds. The model domain is divided into two areas, the interior and boundary regions, that are coupled through Ekman and eddy fluxes of buoyancy. The model is applied to Hudson and James Bays (HJB, a large inland basin in northeastern Canada) for the period 1979–2007. Several yearlong records from instruments moored within HJB show that the model results are consistent with the real system. The model notably reproduces the seasonal migration of the halocline, the baroclinic boundary current, spatial variability of freshwater content, and the fall maximum in freshwater export. The simulations clarify the important differences in the freshwater balance of the western and eastern sides of HJB. The significant role played by the boundary current in the freshwater budget of the system, and its sensitivity to the wind-forcing, are also highlighted by the simulations and new data analyses. We conclude that the model proposed is useful for the interpretation of observed data from Arctic seas and model outputs from more complex coupled/climate models.
    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): C06010, doi:10.1029/2011JC007652.
    Collections
    • Physical Oceanography (PO)
    Suggested Citation
    Journal of Geophysical Research 117 (2012): C06010
     

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