Here’s a copy (below) of the IPCC AR5 report that has the juicy bits highlighted for ease of reading!
In essence the IPCC have toned down some of their projections because they recognise that there has been no global warming since 1997, something their models did not expect. The IPCC believe the 1997 – present day heat is “hidden” in the oceans and will emerge at some point. They also point out that warming will not be regular and that some of their previous models had “forcing inadequacies” (i.e. modelled temperature rise incorrectly?) and that in some models there was an “overestimate of the response to increasing greenhouse gases and other anthropogenic forcing”.
Read Simon Keeling’s @weatherschool musing on this. here http://www.weatherweb.net/wxwebtvsimonnew.php?ID=864
Read the summary report here…