YOU CAN SAY 'temperature precedes CO2' simply because the timeline SHOWS it. THAT DOES NOT MEAN THERE IS A CONNECTION between them. it CAN BE ONLY COINCIDENTAL.
Sure... of course you can say that, it's no more than a description of the data.
But Frogboy then concluded that the influence of CO2 is small.
And to disprove his conclusion you've to show him a graph where a rise in CO2 precedes Temperature.
To make such a statement, he assumes a simple relationship between Temperature and CO2, which is not based on any physical process.
I drew the analogy of comparing 2 graphs at random and "proving" some kind of fictitious relationship, because that's what he's doing.
I've also tried to explain that the world is not that simple, there's no easy way to describe temperature, especially when you're trying to describe the temperature at a single point on the earth. Then you cannot average out regional effects - you've to include the regional effects into your analysis.
That's another mistake that Frogboy makes, he ignores the regional effects.
After all, if you look at the "lag", what is that really ... it's either a 200 year shift on the time-axis, or it's a 1 degree celcius shift on the temperature axis, or a combination of these.
This difference can be explained by a separate process. Or it can even fall within measurement error.
Then you don't have to go against ALL OTHER EVIDENCE that's been collected and suddenly the world makes sense again.
And that's the third mistake Frogboy makes. He ignores evidence like the Azolla event, because he claims that it's "no evidence", simply based on the notion that there is no "clear" evidence in it that CO2 precedes Temperature.
But it does show exactly that, and more. It also shows a strong link between CO2 levels and Temperature. You let the CO2 level of the atmosphere drop from 3,000 ppm to 300 ppm? Enter the ice age.
It's even more of a significant example, because the actions of the algae are a mirror image of the actions of humans. The algae buried trillions of tons of CO2. We humans are in the process of putting trillions of tons of CO2 back into the atmosphere.
As such this event is an extremely cool and useful piece of evidence about what's in store for us.
It's such a shame people don't treat it that way.