IPCC’s 2007 Fourth Assessment Report
A response to Jonathan Katz on climate change
We take issue with a number of points raised by professor Jonathan Katz concerning global climate change (“Global Warming?” Oct. 28). We base our statements on data and analysis from two compilations of climate science: the IPCC’s 2007 Fourth Assessment Report (AR4) and an update to this work, the Synthesis Report from this year’s Copenhagen Climate Change Conference (CCCC). Both are available online.