Abstract: ABSTRACT Substantial amounts of annual radiocarbon ( 14 C) data have recently been produced with the purpose of increasing the time resolution of 14 C records used for constructing the calibration curve and for studying the occurrence of abrupt cosmic-ray events. In this study, we investigate if it is possible to resolve sub-annual scale changes in the atmospheric 14 C content by measuring radiocarbon in early-wood and late-wood fractions from Danish oak. The tree-ring samples span the period 1954–1970 CE, hereby covering the peak of the bomb pulse. A least squares test comparing the atmospheric 14 C content and the new sub-annual 14 C record from Danish tree rings reveals that by measuring early-wood and late-wood fractions, it may be possible to resolve sub-annual variations in past atmospheric 14 C levels.
Publication Year: 2018
Publication Date: 2018-10-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 14
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