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The export of particulate organic carbon (POC) from the surface ocean to depth is traditionally ascribed to sinking. Here, scientists show that a dynamic eddying flow field subducts surface water with high concentrations of nonsinking POC. Such a submesoscale eddy-driven flux of POC is unresolved in global carbon cycle models but can contribute as much as half of the total springtime export of POC from the highly productive subpolar oceans. [Source: Science / AAAS]
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