ABSTRACT
Models targeted at limiting global mean temperature increases share a common policy prescription: immediate, rapid reductions in greenhouse gas emissions. There is much less agreement, however, regarding the best method of achieving these reductions. Each mitigation scenario makes a unique set of choices regarding not only where reductions should be made and who should pay for them (as described in Chapter 7), but also in the optimal mix of technologies to bring about these changes. Reduction in fossil fuel combustion is at the heart of every mitigation scenario, but in order to maintain low temperatures and minimize climate damages, more far-reaching, innovative abatement measures will also be required.
