Friday, November 22, 2013

The IPCC as a Social Network: The Working Group I Summary for Policymakers

Just a quick post to get this blog going again. Below is a network map of the authors of three chapters of the Intergovernmental Panel on Climate Change from the 3rd, 4th, and 5th Assessment Reports (released in 2001, 2007, and 2013, respectively).

The chapter in question is the Working Group I Summary for Policymakers, the working group dealing with the physical science of climate change. There are 151 authors pictured in the image, with 26 of those authors writing for more than one Assessment Report. Four authors (in the center) were involved in all three years. A red connection means that that author was a Lead Author in that year, a blue connection denotes Contributing Authors.

By my count, 24 of the 26 (92%) "multi-report" authors are from Annex I (industrialized) countries. This includes all four authors in the center of the image.