Economic analysis has become increasingly central to the climate policy debate, but the models and assumptions of climate economics often lag far behind the latest developments in this fast-moving field. That’s why Elizabeth Stanton and I have written Climate Economics: The State of the Art, an in-depth review of new developments in climate economics and science since the Stern Review (2006) and the Intergovernmental Panel on Climate Change’s Fourth Assessment Report (2007), with more than 500 citations to the recent research literature.
We begin with a survey of climate science that is potentially relevant to economic analysis, including uncertainties in climate dynamics, the role of black carbon, temperature thresholds for irreversible losses, a new understanding of climate impacts on agriculture, and projections that temperatures could remain near their historical peak for centuries or millennia after greenhouse gas concentrations start declining.
We then focus on innovations in the economic theory and analysis of climate change, including new approaches to uncertainty that build on Weitzman’s “dismal theorem,” which shows the marginal benefit of emission reduction can be infinite. We also cover new developments in the longstanding debate about discount rates and intergenerational economic analysis, and the problems of international equity, which are central to climate negotiations but barely visible in the economics literature. (more…)


