[Steve Van Doorn]

”Actually, I get tired of people recycling (or reiterating) ancient canards, like one volcano emitting more CO2 than all of humanity's fossil fuel burning.

JasonC got the equilibrium temperature of the Earth wrong by about 30 K. Try that on for size while I keep working on the implications of it.”

I am not sure what Cogitator is referring to but I was hoping you might shed some light on it?

Thank you JasonC

[JasonC]

I regularly use 291K = 18C. I've seen some sources that give 288K = 15C. But 30K difference is something else, unless he dropped a point somewhere.

A 1% difference in the origin temperature (absolute) makes essentially no difference in predicted temperature response to 2W, 4W, or 20W power changes. Specifically, to get a 5C increase from 288K requires 7.13% more total power, while the same from 291K as a base requires 7.05% more total power.

Maybe 0.2 watt difference in the needed power to support 5C warming. With more needed to bring about a 5C increase from a lower starting point than from a higher one, because it is proportionally a slightly larger change if the starting point is lower.

Straws, anyone?