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Old January 28th 08, 02:00 PM posted to uk.sci.weather
Dick Lovett Dick Lovett is offline
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On Jan 28, 1:07�pm, Stewart Robert Hinsley
wrote:
In message , Ron Button
writes


I don't have the literature to hand, but supposedly carbon isotope
ratios demonstrate the anthropogenic source of the additional
atmospheric carbon dioxide.
--
Stewart Robert Hinsley


As far as I am aware - source Hadley Centre - it has not been possible
to measure the isotopic signal of anthropgenic CO2
since 1945 due to atomic bomb contamination of the atmospheric.

Dick Lovett
Charlbury