The social cost of carbon (SC-CO2) is an economic metric intended to provide a comprehensive estimate of the net damages - that is, the monetized value of the net impacts, both negative and positive - from the global climate change that results from a small (1-metric ton) increase in carbon-dioxide (CO2) emissions. Under Executive Orders regarding regulatory impact analysis and as required by a court ruling, the U.S. government has since 2008 used estimates of the SC-CO2 in federal rulemakings to value the costs and benefits associated with changes in CO2 emissions. In 2010, the Interagency Working Group on the Social Cost of Greenhouse Gases (IWG) developed a methodology for estimating the SC-CO2 across a range of assumptions about future socioeconomic and physical earth systems. Valuing Climate Changes examines potential approaches, along with their relative merits and challenges, for a comprehensive update to the current methodology. This publication also recommends near- and longer-term research priorities to ensure that the SC- CO2 estimates reflect the best available science.

Climate change is one of the greatest challenges of this century. Mitigation requires a large-scale transition to a low-carbon economy. This paper provides an overview of the rapidly growing literature on the role of macroeconomic and financial policy tools in enabling this transition. The literature provides a menu of policy tools for mitigation. A key conclusion is that fiscal tools are first in line and central, but can and may need to be complemented by financial and monetary policy instruments. Some tools and policies raise unanswered questions about policy tool assignment and mandates, which we describe. The literature is scarce, however, on the most effective policy mix and the role of mitigation tools and goals in the overall policy framework.

The international legal framework for valuing the carbon stored in forests, known as 'Reducing Emissions from Deforestation and Forest Degradation' (REDD+), will have a major impact on indigenous peoples and forest communities. The REDD+ regime contains many assumptions about the identity, tenure and rights of indigenous and local communities who inhabit, use or claim rights to forested lands. The authors bring together expert analysis of public international law, climate change treaties, property law, human rights and indigenous customary land tenure to provide a systemic account of the laws governing forest carbon sequestration and their interaction. Their work covers recent developments in climate change law, including the Agreement from the Conference of the Parties in Paris that came into force in 2016. The Impact of Climate Change Mitigation on Indigenous and Forest Communities is a rich and much-needed new contribution to contemporary understanding of this topic.

This report reviews trends and progress on climate change mitigation policies in 34 OECD countries and 10 partner economies (Brazil, China, Colombia, Costa Rica, Indonesia, India, Latvia, Lithuania, the Russian Federation and South Africa), as well as in the European Union.

Ending poverty and stabilizing climate change will be two unprecedented global achievements and two major steps toward sustainable development. But the two objectives cannot be considered in isolation: they need to be jointly tackled through an integrated strategy. This report brings together those two objectives and explores how they can more easily be achieved if considered together. It examines the potential impact of climate change and climate policies on poverty reduction. It also provides guidance on how to create a “win-win†? situation so that climate change policies contribute to poverty reduction and poverty-reduction policies contribute to climate change mitigation and resilience building. The key finding of the report is that climate change represents a significant obstacle to the sustained eradication of poverty, but future impacts on poverty are determined by policy choices: rapid, inclusive, and climate-informed development can prevent most short-term impacts whereas immediate pro-poor, emissions-reduction policies can drastically limit long-term ones.

This enriching book presents a holistic overview of climate change uncertainty and offers a number of pathways that could be used to account for such uncertainties in the stated preference valuation research. It shows that uncertainty plays an important role in determining the values of climate change mitigation benefits and, as the authors say, 'If this uncertainty remains unaccounted for, there is a potential danger that the estimated economic values will misrepresent social preferences for public policy interventions to manage environmental externalities.' Valuing Climate Change Mitigation discusses the role of uncertainty in valuing the benefits of climate change mitigation policies using contingent valuation and choice experiments techniques. It treats climate change using three dimensions of uncertainty: scenario, policy and preference. Conceptual frameworks are advanced to account simultaneously for these various dimensions of uncertainty. The authors then explore the impact of introducing these uncertainties into benefit estimates for the Australian Carbon Pollutions Reduction Scheme. The authors present frameworks to account for multiple uncertainty in environmental decision analysis that will prove invaluable for academics and students in the fields of environmental economics and management. Policy makers will also gain invaluable methodological insight.