This report argues that it is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century.
This is an an unedited version of the Intergovernmental Panel on Climate Change's Working Group I contribution to the Fifth Assessment Report following the release of its Summary for Policymakers (18)on 27 September 2013.
The full Report is posted in the version distributed to governments on 7 June 2013 and accepted by Working Group I and the Panel on 27 September 2013.
It includes the Technical Summary, 14 chapters and an Atlas of Global and Regional Climate Projections.
Following copy-editing, layout, final checks for errors and adjustments for changes in the Summary for Policymakers, the full Report will be published online in January 2014 and in book form by Cambridge University Press a few months later.