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Radiocarbon in Tropospheric CO2 and Organic Materials from Selected Northern Hemisphere Sites

Published online by Cambridge University Press:  18 July 2016

Ellen R. M. Druffel  and
Sheila Griffin
Ellen R. M. Druffel
Affiliation:
University of California, Department of Earth System Science, Irvine, California 92697-3100 USA
Sheila Griffin
Affiliation:
University of California, Department of Earth System Science, Irvine, California 92697-3100 USA
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Abstract

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Radiocarbon was measured in atmospheric CO2 from La Jolla, California and in living organic materials from six sites in the northern hemisphere. Atmospheric CO2 ∆14C values from La Jolla agreed with those previously published records from China Lake, California (Berger et al. 1987) and Vermunt, Austria (Levin et al. 1985). ∆14C values of fruit and grain samples that grew during 1980 agreed with the atmospheric CO2 ∆14C measurements. Most of the ∆14C results of fruit and corn samples stored since the 1940s agreed with tree-ring ∆14C values for the same time period. In general, agreement was found between the atmospheric CO2 or tree-ring ∆14C records available for the Northern Hemisphere and the ∆14C signatures of rapidly exchanging organic matter pools examined in this study. Exceptions were the ∆14C values of carbonate from egg shells and that of organic carbon from egg insides, which demonstrate that bicarbonate and organic carbon within the egg follow different biochemical pathways.

Type
Articles
Information
Radiocarbon , Volume 37 , Issue 3 , 1995 , pp. 883 - 888
Copyright
Copyright © The American Journal of Science 

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