GHG Targets as Insurance Against Catastrophic Climate Damages
AbstractA critical issue in climate-change economics is the specification of the so-called "damages function" and its interaction with the unknown uncertainty of catastrophic outcomes. This paper asks how much we might be misled by our economic assessment of climate change when we employ a conventional quadratic damages function and/or a thin-tailed probability distribution for extreme temperatures. The paper gives some numerical examples of the indirect value of various GHG concentration targets as insurance against catastrophic climate-change temperatures and damages. These numerical examples suggest that we might be underestimating considerably the welfare losses from uncertainty by using a quadratic damages function and/or a thin-tailed temperature distribution. In these examples, the primary reason for keeping GHG levels down is to insure against high-temperature catastrophic climate risks.
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Bibliographic InfoArticle provided by Association for Public Economic Theory in its journal Journal of Public Economic Theory.
Volume (Year): 14 (2012)
Issue (Month): 2 (03)
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Web page: http://www.blackwellpublishing.com/journal.asp?ref=1097-3923
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Other versions of this item:
- Martin L. Weitzman, 2010. "GHG Targets as Insurance Against Catastrophic Climate Damages," NBER Working Papers 16136, National Bureau of Economic Research, Inc.
- Q5 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics
- Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters
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