Air bubbles from ancient atmosphere caught in ice -> historic CO2 levels -> historic average global temps.
This is fairly 1:1 linkage, and the Earth-heating effect of atmospheric CO2 was established in what, early 20th century or so?
>historic CO2 levels -> historic average global temps
But this seems to imply that global temperatures are only dependent on CO2 levels. That is a pretty flawed assumption...
>historic CO2 levels -> historic average global temps
But this seems to imply that global temperatures are only dependent on CO2 levels. That is a pretty flawed assumption...