Notice that 55,000 years ago a temperature increase led the CO2 increase on both charts.
See for yourself;
So much for the truth of that study.
According to your charts, the incidence of atmospheric CO2 exploded starting 20,000 BC. What human activity back then could explain this? Domesticated mammoth farts? Sports Utility rafts? The increase in cooking fires among the well-to-do Pithecanthropines? Enquiring minds want to know!
OK, in reference to the charts, there is one issue I’ve been wondering about.
In the first chart, notice the spike in Co2 at year 0.
I think this spike is what has all the global warming alarmists in an uproar.
So the question is: Where did this spike data come from?
If ice cores, can year zero ice be trusted as an accurate source of CO2 measurements, or does the amount go down slightly under pressure, etc.? If this is the case, why hasn’t an effective argument been offered?
Any freepers who can illuminate me, please do so.
See point #5 in my profile.