>>The chart shows a correlation between temperature and CO2 concentration, but does CO2 concentration lead or lag temperature? Is there a cause and effect relationship between them or is/are there some other factor(s) that drive them?
They both seem to peak together and then fall together, why is that? If CO2 leads and is causing the temperature to go up, then it would seem that if we want the temperature to go down, then we need to pump as much CO2 into the atmosphere as we can until we hit that critical peak point and they both fall. But what about at the low end? We have such a low concentration of CO2 that the temperature starts to increase? Why would that be?<<
It is not widely accepted yet but when all the data is out and circulated and double checked I suspect that CO2 increase following some other warming event. The most common such warming even may well be tectonic movement effecting ocean currents.
None of what I just said is consensus whereas the rest of what I’ve been discussing has been consensus.
You could be right about both. It's interesting and potentially dangerous how quickly the idea human activity causes global warming has become more or less accepted by the mainstream. I hope we learn enough to actually know before we do something drastic and stupid to "fix" what we don't yet understand.