The Physical Science Basis

The Working Group 1 component of the IPCC 5th Assessment Report (AR5; IPCC 2013a) was released in late 2013. It is a vast assessment of the published, peer-reviewed literature on observed and projected climate change, written by a team of over 200 volunteer scientists. The main findings of the 1500-­page full report were boiled down to a 29-­page “Summary for Policy Makers” (IPCC 2013b) and then super-­summarised in a series of nineteen “headlines.” These headlines are highlighted and fleshed out with discussion from the full report and personal reflections and opinions.

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