Setting a Common Time Frame for Nationally Determined Contributions


This paper suggests how a decision on common time frames could link with other components in the Paris Agreement. The authors provide a thorough assessment of the various options for common time frames currently under negotiation and describe the comparative advantages and risks of adopting a shorter-term, rather than a longer-term time frame.

After comparing the pros and cons of various options, the authors argue that a five-year time frame with the opportunity to additionally indicate a 10-year time frame would best support the Paris Agreement’s ambition cycle and implementation of other elements of the Agreement.

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