The IPCC WG1 Summary for Policymakers has been published (09 February 2007)

On 02 February 2007, the Working Group 1 (WG1) of the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment has published its Summary for Policymakers. The WG1 contribution describes progress in understanding of the human and natural drivers of climate change1, observed climate change, climate processes and attribution, and estimates of projected future climate change.