Oceanography

Cycling coloured carbon

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The fate of dissolved organic carbon in the ocean interior is poorly constrained. Fluorescence measurements illuminate the relative roles of in situ production and riverine input of at least the coloured carbon fraction.

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Figure 1: Schematic depth profiles for dissolved organic carbon concentration9, fluorescent dissolved organic matter concentration1 and apparent oxygen utilization1 in the North Pacific Ocean.

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Coble, P. Cycling coloured carbon. Nature Geosci 1, 575–576 (2008) doi:10.1038/ngeo294

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