the fact that global warming has occurred as determined by the BEST project
Global warning AND cooling have BOTH occurred throughout for millenniums.
I'll say it slower:
No anthropogenic component could be determined by Muller's BEST project.
And errors in his data have been discovered which may alter the "fact".
"The last ten years is an argument about terminology. When you say “global warming” do you mean the increase in temperature, or do you mean CO2′s positive contribution to temperature? When you say “global warming in the last ten years” do you mean the trend in the last ten years’ data, or do you mean the last ten years of the trend in the last forty years’ data? They’re different. As is the question of what it means.
(The 10-year problem was made worse here by an error in one of the papers, in which the trend was calculated but an outlying point in January 2007 pulled the trend artificially high. Because it doesn’t fit the Normal distribution, the trend calculation method used is invalid. Muller had initially thought the data showed no slowdown in the last 10 years even as the skeptics defined it, and said so in his initial interviews, but on seeing the data plotted agreed that it had.)"
Edited by Rogerdodger, 21 April 2012 - 10:30 PM.