$Refractory Dissolved Organic Matter has Similar Chemical Characteristics but Different Radiocarbon Signatures With Depth in the Marine Water Column$

Refractory Dissolved Organic Matter has Similar Chemical Characteristics but Different Radiocarbon Signatures With Depth in the Marine Water Column

The >5,000‐year radiocarbon age (14C‐age) of much of the 630 ± 30 Pg C oceanic dissolved organic carbon (DOC) reservoir remains an enigma in the marine carbon cycle. The fact that DOC is significantly older than dissolved inorganic carbon at every depth in the ocean forms the basis of our current...

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Veröffentlicht in:	Global biogeochemical cycles 2023-04, Vol.37 (4), p.n/a
Hauptverfasser:	White, Margot E., Nguyen, Tran B., Koester, Irina, Lardie Gaylord, Mary C., Beman, J. Michael, Smith, Kenneth L., McNichol, Ann P., Beaupré, Steven R., Aluwihare, Lihini I.
Format:	Artikel
Sprache:	eng
Schlagworte:	Bonding strength Carbon Carbon 14 Carbon cycle Carbon exchange Climate system Components Concentration gradient Continental margins Depletion Depth Dissolved inorganic carbon Dissolved organic carbon Dissolved organic matter Fractionation marine dissolved organic matter Ocean mixing Oceans Organic carbon Perturbation radiocarbon Radiocarbon dating Radiometric dating ramped pyrolysis oxidation Reservoirs Seawater Sediments Signatures Upper ocean Water circulation Water column Water depth
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