Round Up

Harvard Project on Climate Agreements Discussion Paper Series

The Harvard Project on Climate Agreements is supporting more than twenty-seven research projects from leading thinkers around the world, including from Europe, China, Japan, India, Australia, and the United States. These projects range in topic from complete architectures to succeed the Kyoto Protocol, to proposed solutions to specific problems climate negotiators face, such as facilitating technology transfer to developing countries, preventing deforestation, and enforcing a global climate agreement.

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100 Items

Discussion Paper - Harvard Project on Climate Agreements

An Economic Anatomy of Optimal Climate Policy

| August 2018

The authors introduce geoengineering into an optimal control model of climate economics. Together with mitigation and adaptation, carbon and solar geoengineering span all possible climate policies. Their wildly different characteristics have important implications for policy. They show in the context of their model that: (i) whether emissions are positive or zero the optimal carbon tax always equals the marginal cost of carbon geoengineering; (ii) the introduction of either form of geoengineering leads to higher emissions yet lower temperatures; (iii) in a world with above-optimal cumulative emissions, mitigation alone is insufficient and only a complete set of instruments can minimize climate damages.

This is an updated version of a paper first published in July 2017.

Discussion Paper - Harvard Project on Climate Agreements

Linking Heterogeneous Climate Policies (Consistent with the Paris Agreement)

| October 2017

The authors of this discussion paper consider linkage among heterogeneous climate-change policies — moving beyond relatively simple linkage among emissions-trading systems — in the context of the emerging Paris-Agreement regime. A Harvard Project event at COP-23 will draw upon this paper.

Discussion Paper - Harvard Project on Climate Agreements

US Withdrawal from the Paris Agreement: Economic Implications of Carbon-Tariff Conflicts

    Authors:
  • Christoph Böhringer
  • Thomas F. Rutherford
| August 2017

Authors Christoph Böhringer and Thomas Rutherford evaluate the efficacy of imposing carbon tariffs on U.S. imports as an alternative to U.S. participation in the Paris Agreement. The authors warn that carbon tariffs on the United States could lead to a tariff war that ultimately hurts China, in particular, and the European Union more than the United States.

Discussion Paper - Harvard Project on Climate Agreements, Belfer Center

On a World Climate Assembly and the Social Cost of Carbon

    Author:
  • Martin L. Weitzman
| November 2016

Martin Weitzman explores theoretically how international cooperation (democratic voting and/or negotiation) to set a global carbon price might incentivize mitigation and yield a global price that approximates an economically-efficient "social cost of carbon."

Discussion Paper - Harvard Project on Climate Agreements, Belfer Center

Living Mitigation Plans: The Co-Evolution of Mitigation Pledge and Review

| October 25, 2016

The 2015 Paris Agreement completed the transition to pledge-and-review as the core of the multilateral climate policy architecture. With ambitious long-term temperature goals and country-specific emission mitigation pledges set through 2030, the unfinished business coming out of the Paris talks is the design and implementation of the climate transparency mechanism. This paper reviews the poor transparency track record under the UN Framework Convention on Climate Change, and uses this performance to motivate engagement of non-stakeholders to enhance the rigor of the information and analysis of countries' emission mitigation efforts.

Discussion Paper - Harvard Project on Climate Agreements, Belfer Center

Paris: Beyond the Climate Dead End through Pledge and Review?

    Authors:
  • Robert O. Keohane
  • Michael Oppenheimer
| August 2016

The authors examine the pledge and review system of the Paris Agreement, which gives states much more freedom in setting goals for reducing emissions. This is quite different than the Kyoto Protocol, which set specific targets and timetables.