Articles | Volume 17, issue 23
Atmos. Chem. Phys., 17, 14771–14784, 2017
https://doi.org/10.5194/acp-17-14771-2017
Atmos. Chem. Phys., 17, 14771–14784, 2017
https://doi.org/10.5194/acp-17-14771-2017

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 et al.

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Cited articles

AECOM New Zealand Limited: Community greenhouse gas inventory for Wellington City and the Greater Wellington Region 2000–2015, Wellington, 2016.
Australian Government: State and territory greenhouse gas inventories 2014, Department of the Environment, 2016.
Baisden, W. T., Prior, C. A., Chambers, D., Canessa, S., Phillips, A., Bertrand, C., Zondervan, A., and Turnbull, J. C.: Radiocarbon sample preparation and data flow at Rafter: Accommodating enhanced throughput and precision, Nucl. Instrum. Meth. B, 294, 194–198, 2013.
Bevington, P. R. and Robinson, D. K.: Data reduction and error analysis for the physical sciences, 3rd Edn., McGraw-Hill, 2003.
Boden, T. A., Marland, G., and Andres, R. J.: Global, Regional, and National Fossil-Fuel CO2 Emissions, Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., USA, 2017.
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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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