Endogenous growth, convexity of damages and climate risk: how Nordhaus� framework supports deep cuts in carbon emissions

Simon Dietz and Nicholas Stern

No 159, GRI Working Papers from Grantham Research Institute on Climate Change and the Environment

Abstract: To slow or not to slow� (Nordhaus, 1991) was the first economic appraisal of greenhouse gas emissions abatement and founded a large literature on a topic of great, worldwide importance. In this paper we offer our assessment of the original article and trace its legacy, in particular Nordhaus� later series of �DICE� models. From this work many have drawn the conclusion that an efficient global emissions abatement policy comprises modest and modestly increasing controls. On the contrary, we use DICE itself to provide an initial illustration that, if the analysis is extended to take more strongly into account three essential elements of the climate problem � the endogeneity of growth, the convexity of damages, and climate risk � optimal policy comprises strong controls. To focus on these features and facilitate comparison with Nordhaus� work, all of the analysis is conducted with a high pure-time discount rate, notwithstanding its problematic ethical foundations.

Date: 2014-05
New Economics Papers: this item is included in nep-ene and nep-env
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Citations: View citations in EconPapers (21)

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