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Changing controls on oceanic radiocarbon: New insights on shallow-to-deep ocean exchange and anthropogenic CO2 uptake

Abstract:

The injection of radiocarbon (14C) into the atmosphere by nuclear weapons testing in the 1950s and 1960s has provided a powerful tracer to investigate ocean physical and chemical processes. While the oceanic uptake of bomb-derived 14C was primarily controlled by air-sea exchange in the early decades after the bomb spike, we demonstrate that changes in oceanic 14C are now primarily controlled by shallow-to-deep ocean exchange, i.e., the same mechanism that governs anthropogenic CO2 uptake. Thi...

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Publisher copy:
10.1029/2012JC008074

Authors


Graven, HD More by this author
Khatiwala, S More by this author
Journal:
Journal of Geophysical Research: Oceans
Volume:
117
Issue:
10
Publication date:
2012
DOI:
EISSN:
2169-9291
ISSN:
0148-0227
URN:
uuid:a1d6cfc5-9caa-48cd-aef9-5b3b88dbb69c
Source identifiers:
385415
Local pid:
pubs:385415
Language:
English

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