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Journal of Economic Literature Vol. 55 No. 3 2017

The Economics of the Climate

Geoffrey Heal

Columbia University, Graduate School of Business and School of International and Public Affairs and NBER.

open access

Abstract

I review the economic characteristics of the climate problem, focusing on the choice of discount rates in the presence of a stock externality, risk and uncertainty/ambiguity, and the role of integrated assessment models (IAMs) in analyzing policy choices. I suggest that IAMs can play a role in providing qualitative understanding of how complex systems behave, but are not accurate enough to provide quantitative insights. Arguments in favor of action on climate issues have to be based on aversion to risk and ambiguity and the need to avoid a small but positive risk of a disastrous outcome.

DOI
10.1257/jel.20151335
Volume
55
Issue
3
Pages
1046-1063
Language
en
Sources
crossref openalex

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