Radiocarbon/Tree-Ring Calibration, Solar Activity, and Upwelling of Ocean Water

Least-squares fitted smooth curves to radiocarbon versus tree-ring calibration data for the period AD 1140 to 1950 are compared with climatic warming and cooling of the North Atlantic (Little Ice Age), and with recorded sunspot numbers over the period AD 1670 to 1950. Calibration curves from differe...

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Bibliographic Details
Published in:Radiocarbon
Main Authors: Knox, F B, McFadgen, B G
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2004
Subjects:
General Earth and Planetary Sciences
Archeology
North Atlantic
Online Access:http://dx.doi.org/10.1017/s0033822200036055
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200036055
Description
Summary:Least-squares fitted smooth curves to radiocarbon versus tree-ring calibration data for the period AD 1140 to 1950 are compared with climatic warming and cooling of the North Atlantic (Little Ice Age), and with recorded sunspot numbers over the period AD 1670 to 1950. Calibration curves from different parts of the globe are not identical, and appear to be determined by a combination of variable solar activity and variable oceanic upwelling of 14 C-depleted water, with the variable upwelling itself partly determined by solar activity.

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