Climate Change 2001: The Scientific Basis

This technical document has been produced by Working Group I (WGI) of the Intergovernmental Panel on Climate Change (IPCC) and is the first part of Climate Change 2001, the Third Assessment Report (TAR) of the IPCC. It focuses on the science of climate change. It consists of 14 chapters covering the physical climate system, the factors that drive climate change, analyses of past climate and projections of future climate change, and detection and attribution of human influences on recent climate.