Fellow Story

Levin co-authors report on appropriate time frames for post-202 emissions-reduction contributions

As countries negotiate a new international climate agreement for the post-2020 period—including at this week’s intersessional meeting in Bonn, Germany—the key choices for putting the world on a secure pathway to a low-carbon future should be front-of-mind. The new agreement will be essential for putting in place the policies beyond 2020 that ensure a shift from high-carbon to low-carbon and climate-resilient investments. To do this, the agreement will have to send the right signals to governments and businesses about the trajectory we need to be on.

With that in mind, a central question facing the international community is: What will the time frames be for countries’ post-2020 emissions-reduction contributions? 

Now is the time to begin answering this question, as countries are required to propose their emissions-reduction contributions by March 2015. Getting the time frames right is essential to ensuring that the international climate agreement is both effective and ambitious. Should these contributions—which will begin in 2020—cover a period of five years to 2025? Or a period of 10 years to 2030? Or some combination? And should the agreement also include a long-term collective goal, such as phasing out greenhouse gas emissions by 2050?

The answers to these questions hold significant consequences for the future of climate change action. It’s imperative that countries take them into account—both in Bonn this week and at future UNFCCC meetings.

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