OECD/IEA Climate Change Expert Group Papers

This series is designed to make available to a wider readership selected papers on climate change issues that have been prepared for the OECD/IEA Climate Change Expert Group (CCXG). The CCXG (formerly called the Annex I Expert Group) is a group of government delegates from OECD and other industrialised countries. The aim of the group is to promote dialogue and enhance understanding on technical issues in the international climate change negotiations. CCXG papers are developed in consultation with experts from a wide range of developed and developing countries, including those participating in CCXG Global Forums.

The full papers are generally available only in English.

The opinions expressed in these papers are the sole responsibility of the author(s) and do not necessarily reflect the views of the OECD, the IEA or their member countries, or the endorsement of any approach described therein.


Strategic Review: Implications of Proposals to Date for Mitigation Contributions

Parties to the UN Framework Convention on Climate Change (UNFCCC) produced a negotiating text in February 2015, which forms the basis for negotiations toward a climate change agreement scheduled for adoption at the 21st Conference of the Parties in December 2015. This document aims to better understand proposals in the Geneva negotiating text related to the notion of strengthening nationally determined contributions (NDCs) over time, contained under the headings “strategic review of implementation”, “aggregate ambition assessment” and “enhanced ambition mechanism”. This paper focuses on how key elements of these proposals might apply to mitigation contributions or the mitigation component of NDCs: The document examines the main proposals in terms of their relevance, coherence, assumptions, scope, and feasibility, in the context of a cycle of mitigation contributions that seek to become more ambitious over time. It also explores whether the proposals are likely to be effective in achieving their foreseen outcomes, the majority of which involve changes to NDCs. In general, it finds that there is significant overlap between proposals for various “review” processes in different parts of the Geneva negotiating text, as well as overlap with monitoring, reporting and verification processes under the UNFCCC. The document also presents some broad messages on the subject of “strategic review” expressed during the CCXG Global Forum in March 2015. It is currently unclear what a review or assessment process would comprise, largely because it relates to an overarching process – a cycle of contributions – for which there is not yet an agreed vision or scope.


Keywords: 2015 agreement, climate change, greenhouse gas, UNFCCC, mitigation
JEL: Q58: Agricultural and Natural Resource Economics; Environmental and Ecological Economics / Environmental Economics / Environmental Economics: Government Policy; H87: Public Economics / Miscellaneous Issues / International Fiscal Issues; International Public Goods; Q56: Agricultural and Natural Resource Economics; Environmental and Ecological Economics / Environmental Economics / Environment and Development; Environment and Trade; Sustainability; Environmental Accounts and Accounting; Environmental Equity; Population Growth; Q54: Agricultural and Natural Resource Economics; Environmental and Ecological Economics / Environmental Economics / Climate; Natural Disasters and Their Management; Global Warming; F53: International Economics / International Relations, National Security, and International Political Economy / International Agreements and Observance; International Organizations
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