*sigh* - this is what is wrong with the whole "debate" - This statement is essentially a lie based on a truth, and it takes about half a page of explanation to explain why this is, but it takes only a few seconds to repeat the lie somewhere else.
Yes, and with the billions available to climate alarmism, you'd better believe that lies travel many times around the world before the truth has got its boots on.
I'll attempt to use less than a page:
(1) Yes, during the climate changes caused by Milankovitch cycles, CO2-levels trail the start of temperature rise by 800 years, the reason being that CO2 is not the cause of these climate changes, the shape of the earth's orbit is the cause. However, there is a feedback loop which kicks in as temperatures rise, which causes the ocean to exhale CO2. This CO2 then causes further warming, increasing the total warming considerably beyond what would be expected if the only effect where the orbit changes themselves.
*sigh* The ice core records show no sign of the acceleration of temperature rise due to carbon dioxide enrichment.
None at all. Its a persistent myth that carbon dioxide levels affect climate when all of the physical evidence shows a response, but no feedback.
So the "trailing" of CO2 in these cases in no way disproves CO2 as a possible causal agent in climate change...
No it doesn't but it doesn't show that CO2 IS a causal agent either. It's an argument from silence that is the main fallacy
2) On the other hand, there have been warming events in the past that cannot be explained by Milankovitch-cycles, and there the CO2-rise (possibly due to volcanic activity on a massive scale) appears to be the causal agent, and does not trail the temperature change.
Now you're making things up. There have been much warmer periods in Earth's past, but they have occurred when CO2 levels have been much higher (many times higher) than they are today. But the cause and effect of CO2 on climate has never been established.
We cannot measure the exact relationship between CO2 and temperature that far back to see whether the lag holds. It's another argument from silence (or ignorance).
But for the last 750,000 years CO2 has lagged temperature rise. Just deal with it.
Massive vulcanism would mainly cause large temperature falls due to SO2 and dust particles which overwhelm any putative CO2 warming.
