Quote:
Originally Posted by oil pan 4
Man driven climate change also seemed logical too.
Just because old carbon isotopes that were obviously released by man are found some where doesn't prove man driven climate change.
That's like saying because man went to the moon proves that there is or was life on mars.
They have little to do with each other besides being in the same subject.
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The radioisotopic carbon,oxygen,and other isotope assays of all the climate proxies belong to a very mature field of scientific study.There is no dispute over its efficacy.
It's like ancestry.com for ice cores,sea sediments,paleodendrochronology,coral,stalagtites, etc..
All CO2 has a specific fingerprint which belies it's origin.We know if it came from Coal,gasoline,diesel,natural gas,etc..
And again,when you burn a man-made fire the size of the entire surface of Earth (oceans included),1.6-X each year,you can expect to see that show up in the atmosphere.