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Dissolved organic carbon (DOC) in the ocean is thousands of 14C years old, yet a portion of the DOC cycles on much shorter time scales (days to decades). We present 14C measurements of DOC in the Arctic Ocean and estimate that ?8% of the DOC in the deep Eurasian basin contains bomb 14C. While this is a limited dataset, there appears to be selective loss of modern DOC in the surface and halocline waters of the open Beaufort Sea versus the Beaufort slope.
Dissolved lignin phenols, colored dissolved organic matter (CDOM) absorption and CDOM fluorescence were analyzed along cross-slope mooring locations in the Barents, Laptev and East Siberian Seas to gain a better understanding of terrigenous dissolved organic carbon (tDOC) dynamics in Arctic Shelf seas and the Arctic Ocean. A gradient of river water and tDOC was observed along the continental shelf eastward into the East Siberian Sea.
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