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    Circulation and water mass transformation in a model of the Chukchi Sea

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    2005JC003364.pdf (2.840Mb)
    Date
    2007-05-11
    Author
    Spall, Michael A.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3715
    As published
    https://doi.org/10.1029/2005JC003364
    DOI
    10.1029/2005JC003364
    Keyword
     Arctic circulation; Sea ice; Water mass transformation 
    Abstract
    The circulation and water mass transformation in a regional ocean-ice model of the Chukchi Sea are discussed. The model has horizontal resolution of O(4 km), is forced by fluxes derived from daily NCEP reanalysis fields, and has seasonally varying transport, temperature, and salinity imposed at Bering Strait. Many of the observed characteristics of the mean circulation and seasonal cycle in the Chukchi Sea are reproduced. The discussion focuses on: the branching of the inflow transport into pathways following Herald Canyon, Central Channel, and the Alaskan coast; the pattern of ice melt; and the water mass transformation and formation of winter water and hypersaline water. The ice melt pattern and timing is strongly influenced by advection through Bering Strait. High frequency forcing results in a larger region of ice melt, particularly over the shoals and in the northern Chukchi Sea, compared to monthly mean forcing. In the model, the seasonal cycle of salinity in the southern and central Chukchi Sea is dominated by advection through Bering Strait, while local atmospheric forcing and brine rejection are more important north of Herald and Hanna Shoals and in Barrow Canyon. However, since the residence time in the Chukchi Sea is generally less than 1 year, interannual variability in the Bering Strait salinity will be reflected in the salinity across the Chukchi Sea and at Barrow Canyon.
    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 Journal of Geophysical Research 112 (2007): C05025, doi:10.1029/2005JC003364.
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    • Physical Oceanography (PO)
    Suggested Citation
    Journal of Geophysical Research 112 (2007): C05025
     

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