Monday, July 23, 2012

Annual Variations in C-14 Excess

  One can find seasonal variations in the C-14 excess as seen in data for Antartica below. Long term changes in the amount of C-14 have been correlated with sunspot activity but this also affects weather patterns so changes in the cosmic ray flux would not be the only explanation for changes in C-14. An alternative explanation might be changes the relaxation rate.
src: CDIAC

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