Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 17, issue 23
Articles | Volume 17, issue 23
https://doi.org/10.5194/acp-17-14771-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-17-14771-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 17, issue 23
Research article
 | 
12 Dec 2017
Research article |  | 12 Dec 2017

Sixty years of radiocarbon dioxide measurements at Wellington, New Zealand: 1954–2014

Jocelyn C. Turnbull, Sara E. Mikaloff Fletcher, India Ansell, Gordon W. Brailsford, Rowena C. Moss, Margaret W. Norris, and Kay Steinkamp

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Short summary
We present a 60-year record of radiocarbon in carbon dioxide (14CO2) from Wellington New Zealand. It records the atmospheric 14C “bomb spike” and decline as bomb 14C moved through the carbon cycle and fossil fuel emissions increased. The bomb peak is lower and 1.4 years later than in the Northern Hemisphere. Since the early 2000s, Wellington 14CO2 has been elevated above the Northern Hemisphere, possibly due to a reinvigorated Southern Ocean carbon sink.
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