Key points are not available for this paper at this time.
The concentration of bomb-produced radiocarbon in human beings will lag behind the rising concentration in average atmospheric CO 2 . Measurements on human materials suggest a lag of about 1 year for both breath CO 2 and blood, with the suggestion of a somewhat higher value for lung tissue. These results are in reasonable agreement with predictions based on independent evidence.
Broecker et al. (Fri,) studied this question.