from al fin next level Why are Climate Models so Estranged from Reality:

Why do climate models predict apocalyptic levels of warming that do not match up with reality? It comes down to assumptions being made about numerous unknown dynamic quantities that are included in — and excluded from — the models.

What we seem to be left with, is that computer climate models exclude many of the most important parameters contributing to real world climate. Of the parameters that are included, several of them appear to be based upon sloppy — even faith-based — assumptions. No wonder they fail the test of observation. They are no better than the predictions of psychic grifters.

Thus, it looks as if the great green climate apocalypse movement and associated green energy scam, are nothing more than a money-grab by political cronies and a power grab by political insiders — of the governmental, the inter-governmental, and the non-governmental varieties . . .

also from al fin next level The Importance of Being a Heretic:

My first heresy says that all the fuss about global warming is grossly exaggerated. Here I am opposing the holy brotherhood of climate model experts and the crowd of deluded citizens who believe the numbers predicted by the computer models. Of course, they say, I have no degree in meteorology and I am therefore not qualified to speak. But I have studied the climate models and I know what they can do. The models solve the equations of fluid dynamics, and they do a very good job of describing the fluid motions of the atmosphere and the oceans. They do a very poor job of describing the clouds, the dust, the chemistry and the biology of fields and farms and forests. They do not begin to describe the real world that we live in. The real world is muddy and messy and full of things that we do not yet understand. It is much easier for a scientist to sit in an air-conditioned building and run computer models, than to put on winter clothes and measure what is really happening outside in the swamps and the clouds. That is why the climate model experts end up believing their own models.