By JR on Thursday, April 05, 2012
There is here a compilation of points made by Warmist scientists which criticize a talk given by Prof. Lindzen -- who is a fairly conventional climate scientist but who thinks that the effects of rising CO2 levels on terrestrial temperature will be trivial. And on the principle that the past is the best predictor of the future, they certainly will be.
Prof. Lindzen is well able to defend himself but I would like to note just one thing that throws all the Warmist criticisms into a cocked hat: The effect of clouds. It is undoubted that cloudiness correlates with warming but does that cause warming to accumulate or do clouds shelter the earth and hence lead to subsequent cooling? Do clouds provide a positive or a negative feedback? And answering that is absolutely crucial. Because it is only a postulated accumulation of warming from clouds that allows Warmists to claim that future warming will deviate from its present trivial trend.
So what evidence do the Warmists put forward for their unlikely view that clouds do not shelter the earth from warming? All they offer -- wait for it -- is "models" again. They have no facts, just an unlikely opinion. How well justified are their other niggles at Lindzen just does not matter in the light of that central failure.
And another of their central points fails on the cloud effect too. They repeatedly say that uncertainty does not equal ignorance. But it does. They concede that they cannot provide precise predictions of warming but claim that they have got it broadly right. But if clouds tend to cool the earth, they have got it broadly wrong! What a flock of turkeys they are!