Figure 2.19

• "Exp" means expected conditions
• "Extr" means extreme conditions
• "Unc" means under uncertainty prior to 2020

Thus, Exp Damage means planning for expected damages throughout the time horizon (1990-2100), while Unc-Exp Dam means planning under uncertainty until 2020 and then learning that damages are, in fact, as expected. Unc-Extr means planning under uncertainty until 2020 and then learning that the extreme damages are in effect.

Source: Manne, A. S. (1996). "Hedging Strategies for Global Carbon Dioxide Abatement: A Summary of Poll Results - EMF 14 Subgroup; Analysis of Decisions Under Uncertainty," Energy Modeling Forum Workshop Paper 14.2, February.

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