IPCC. Climate Change 2007: The Physical Science Basis

This report is the contribution of Working Group I to the IPCC's Fourth Assessment Report. It provides insights into the effects of human activity on the atmosphere; contains an evaluation of observed climatic changes using the latest measurement techniques; includes a detailed review of climate change observations and modeling for every continent; and features the first probabilistic evaluation of climate model simulations. In addition to the full report, it includes a technical summary, a summary for policymakers, and frequently asked questions.