Common Metrics: Comparing Countries' Climate Pledges

September 2011

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To enable a better understanding of the mitigation pledges offered under the Copenhagen Accord and the Cancún Agreements, this analysis converts the 2020 pledges of the major economies into four common metrics: percent change in greenhouse gas emissions from 1990; percent change from 2005; percent change from “business as usual” and; percent change in emissions intensity from 2005.

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