Pindyck on Climate Science

28 August 2013 at 6:15 am Leave a comment

| Peter Klein |

Further to my previous post on misplaced confidence, here is Robert Pindyck on one of the critical tools used by climate scientists.

Climate Change Policy: What Do the Models Tell Us?
Robert S. Pindyck
NBER Working Paper No. 19244, July 2013

Very little. A plethora of integrated assessment models (IAMs) have been constructed and used to estimate the social cost of carbon (SCC) and evaluate alternative abatement policies. These models have crucial flaws that make them close to useless as tools for policy analysis: certain inputs (e.g. the discount rate) are arbitrary, but have huge effects on the SCC estimates the models produce; the models’ descriptions of the impact of climate change are completely ad hoc, with no theoretical or empirical foundation; and the models can tell us nothing about the most important driver of the SCC, the possibility of a catastrophic climate outcome. IAM-based analyses of climate policy create a perception of knowledge and precision, but that perception is illusory and misleading.

Thanks to Bob Murphy for the pointer.

Entry filed under: - Klein -, Methods/Methodology/Theory of Science, Myths and Realities.

Young Ronald David Landes

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