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Dissolved Organic Radiocarbon in the Central Pacific Ocean
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2019
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Source: Geophysical Research Letters, 46(10), 5396-5403
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Journal Title:Geophysical Research Letters
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Description:We report marine dissolved organic carbon (DOC) concentrations, and DOC ∆14C and δ13C values in seawater collected from the central Pacific. Surface ∆14C values are low in equatorial and polar regions where upwelling occurs and high in subtropical regions dominated by downwelling. A core feature of these data is that 14C aging of DOC (682 ± 86 14C years) and dissolved inorganic carbon (643 ± 40 14C years) in Antarctic Bottom Water between 54.0°S and 53.5°N are similar. These estimates of aging are minimum values due to mixing with deep waters. We also observe minimum ∆14C values (−550‰ to −570‰) between the depths of 2,000 and 3,500 m in the North Pacific, though the source of the low values cannot be determined at this time.
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Source:Geophysical Research Letters, 46(10), 5396-5403
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ISSN:0094-8276;1944-8007;
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Rights Information:Other
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Compliance:Library
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