Is there any Evidence for Regional Atmospheric 14C Offsets in the Southern Hemisphere?
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Center for Accelerator Mass Spectrometry (CAMS) Tasmanian Huon pine (Lagarostrobos franklinii) decadal measurements for the interval AD 745–855 suggest a mean interhemispheric radiocarbon offset (20 ± 5 yr), which is considerably lower than the previously reported mean interhemispheric offset for the last 2 millennia (44 ± 17 yr). However, comparable University of Waikato (Wk) New Zealand kauri (Agathis australis) measurements show significantly higher values (56 ± 6 yr), suggesting the possibility of a temporary geographic (intrahemispheric) offset between Tasmania, Australia, and Northland, New Zealand, during at least 1 common time interval. Here, we report 9 new Wk Tasmanian Huon pine measurements from the decades showing the largest Huon/kauri difference. We show statistically indistinguishable Wk Huon and Wk kauri 14 C ages, thus dispelling the suggestion of a 14 C geographic offset between Tasmania and Northland.
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A 2000-yr-long series of bidecadal measurements of a floating kauri tree-ring chronology spanning Heinrich Stadial 3 (ca. 30.6-28.9 cal kBP) were 14C-matched to other calibration datasets by including an interhemispheric offset of 43 ± 23 14C yr.
“Further back in time, a 2000-yr-long series of bidecadal measurements of a floating kauri treering chronology spanning Heinrich Stadial 3 (ca. 30.6 -28.9 cal kBP, equivalent to GS-5) from Finlayson Farm, New Zealand (Turney et al. 2016b) were 14 Cmatched to the other calibration datasets by including an interhemispheric offset 43 ± 23 14 C yr (Hogg et al. 2013b).”
From The IntCal20 Northern Hemisphere Radiocarbon Age Calibration Curve (0–55 cal kBP) (2020) · cites this paper as Hogg et al. 2013b
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Cites
Anthropogenic and solar components of hemispheric <sup>14</sup>C
Stuiver, M., & Braziunas, T. F. (1998) · Geophysical Research Letters · doi:10.1029/97gl03694 · Cited by 110 · see citing works
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Research works printed but not linked: 19
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The IntCal20 Northern Hemisphere Radiocarbon Age Calibration Curve (0–55 cal kBP)
Reimer, P. J., Austin, W. E. N., Bard, E., Bayliss, A., Blackwell, P. G., Bronk Ramsey, C., Butzin, M., Cheng, H., Edwards, R. L., Friedrich, M., et al. (2020) · Radiocarbon · doi:10.1017/rdc.2020.41 · Cited by 7,900 · see citing works
“…of a floating kauri tree-ring chronology spanning Heinrich Stadial 3 (ca. 30.6 – 28.9 cal kBP, equivalent to GS-5) from Finlayson Farm, New Zealand (Turney et al. 2016b) were 14 C matched to the other calibration datasets by including an interhemispheric offset 43 ± 23 14 C yr (Hogg et al. 2013b).”
BackgroundMethodInfluentialSelf-citationSHCal20 Southern Hemisphere calibration, 0–55,000 years cal BP
Hogg, A. G., Heaton, T. J., Hua, Q., Palmer, J. G., Turney, C. S., Southon, J., Bayliss, A., Blackwell, P. G., Boswijk, G., Bronk Ramsey, C., et al. (2020) · Radiocarbon · doi:10.1017/rdc.2020.59 · Cited by 1,530 · see citing works
Self-citationMarsh, E. J., Bruno, M. C., Fritz, S. C., Baker, P., Capriles, J. M., & Hastorf, C. A. (2018) · Radiocarbon · doi:10.1017/rdc.2018.16 · Cited by 109 · see citing works
- Authors
- Hogg, A., Turney, C., Palmer, J., Cook, E., & Buckley, B.
- Affiliations
- University of Waikato (NZ)
- UNSW Sydney (AU)
- Lamont-Doherty Earth Observatory (US)
- Corresponding author
- Hogg, Alan
- Venue
- Radiocarbon
- Publisher
- Cambridge University Press (CUP)
- Published
- 2013
- Volume
- 55
- Issue
- 4
- Pages
- 2029-2034
- ISSN
- 0033-8222 (ISSN-L)
- 1945-5755
- OpenAlex
- W2112762104
- Cited by
- 17
- References
- 1
- Citations by year
- 2026: 1 · 2024: 1 · 2023: 1 · 2020: 5 · 2019: 1 · 2018: 2 · 2017: 2 · 2015: 3 · 2013: 1
- FWCI
- 0.91
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Radiocarbon (publishedVersion)
- Research Commons (University of Waikato) (submittedVersion)
- UNSWorks (University of New South Wales, Sydney, Australia) (submittedVersion, cc-by-nc-nd)
- Funders
- University of Waikato
- Monash University
- Marsden Fund
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Archaeology and ancient environmental studies
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Tree-ring climate responses
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
- Keywords
- Southern Hemisphere, Huon pine, kauri, Agathis australis, dendrochronology, radiocarbon chronology
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