claim: The IPCC’s Fourth Assessment Report, 2007, carries in three places a graph in which the Hadley Center’s global mean surface temperature anomaly dataset from 1850-2005 is displayed with four arbitrarily-chosen trend-lines overlaid upon it.
evidence: The IPCC Fourth Assessment Report ( AR4 ) published in 2007 featured a graph showing 12 proxy based temperature reconstructions, including the three highlighted in the 2001 Third Assessment Report ( TAR ); Mann, Bradley & Hughes 1999 as before, Jones et al.