Concentration of carbon dioxide is about 1.4 times what it was before the Industrial Revolution. How much and how fast will Earth warm if carbon dioxide concentrations double the pre-industrial?

Ron Stouffer and Gabriel Vecchi of NOAA’s Geophysical Fluid Dynamics Laboratory in Princeton, N.J., share their experiences working on one of the most comprehensive scientific documents in history.

Climate Change 2013: The Physical Science Basis

On September 27, 2013, Working Group I of the Intergovernmental Panel on Climate Change (IPCC) presented its report to member governments for approval and acceptance. The report is the first of four that will make up the IPCC's 5th Assessment.

Climate Change 2007: Mitigation of Climate Change

A comprehensive scientific assessment providing an in-depth analysis of the costs and benefits of different approaches to mitigating and avoiding climate change.

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