This paper surveys various estimates of the macroeconomic implications of reducing greenhouse gas emissions. Most available studies focus on policies to reduce CO2 emissions and are limited to the costs of such policies. The survey first examines the key factors shaping baseline emission...

Overview -- Baseline emissions under business as usual -- Abatement initiatives in the Copenhagen Accord and Cancun Agreements -- Abatement cost functions -- Abatement costs through 2050 -- Trade and timing -- Estimating investment requirements and adaptation costs -- Synthesis

The Stern Review reported a social cost of carbon of over $300/tC, calling for ambitious climate policy. We here conduct a systematic sensitivity analysis of this result on two crucial parameters: the rate of pure time preference, and the rate of risk aversion. We show that the social cost of...