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    Iceberg meltwater fluxes dominate the freshwater budget in Greenland's iceberg-congested glacial fjords

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    Article (853.0Kb)
    Supporting Information S1 (961.3Kb)
    Table S1 (43.37Kb)
    Date
    2016-11-09
    Author
    Enderlin, Ellyn  Concept link
    Hamilton, Gordon S.  Concept link
    Straneo, Fiamma  Concept link
    Sutherland, David A.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/8646
    As published
    https://doi.org/10.1002/2016GL070718
    DOI
    10.1002/2016GL070718
    Keyword
     Icebergs; Ice melange; Fjord; Submarine melting; Freshwater fluxes; Greenland 
    Abstract
    Freshwater fluxes from the Greenland ice sheet have increased over the last two decades due to increases in liquid (i.e., surface and submarine meltwater) and solid ice (i.e., iceberg) fluxes. To predict potential ice sheet-ocean-climate feedbacks, we must know the partitioning of freshwater fluxes from Greenland, including the conversion of icebergs to liquid (i.e., meltwater) fluxes within glacial fjords. Here we use repeat ~0.5 m-resolution satellite images from two major fjords to provide the first observation-based estimates of the meltwater flux from the dense matrix of floating ice called mélange. We find that because of its expansive submerged area (>100 km2) and rapid melt rate (~0.1–0.8 m d−1), the ice mélange meltwater flux can exceed that from glacier surface and submarine melting. Our findings suggest that iceberg melt within the fjords must be taken into account in studies of glacial fjord circulation and the impact of Greenland melt on the ocean.
    Description
    Author Posting. © American Geophysical Union, 2016. 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 43 (2016): 11,287–11,294, doi:10.1002/2016GL070718.
    Collections
    • Physical Oceanography (PO)
    Suggested Citation
    Geophysical Research Letters 43 (2016): 11,287–11,294
     

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