The Social Cost of Carbon Is Model Manipulation at Its Finest

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Most climate model forecasts are not much more than charlatanry! We still can not even forecast local weather accurately beyond 24 hours. The complexity and subject matter of climate and weather forecasting is similar!

"... how easy it is to artificially raise the social cost of carbon by manipulating various assumptions in the calculation, including the discount rate ...
Here is a dirty little secret that few are aware of: All those horrifying future temperature changes that grace the front pages of papers of record aren’t really the predicted warming above today’s level. Instead, they are the difference between two models of climate change. ...

The usual procedure is then to instantaneously quadruple carbon dioxide and let the model spin up to an equilibrium climate. Then—hold onto your hat—that number is divided by two, taking advantage of the fact that warming varies linearly with increasing carbon dioxide, something that has been known for a long time. The final figure is called the equilibrium climate sensitivity to doubled carbon dioxide.

With regard to the equilibrium climate sensitivity, climate science is very odd: The more money we spend studying it, the more uncertain our forecasts become. ..."

The Social Cost of Carbon Is Model Manipulation at Its Finest