Report: There is no 97 percent global warming consensus
The vaunted scientific consensus around manmade global warming may be exaggerated, according to a study by the Global Warming Policy Foundation.
A May 2013 report by climate scientist John Cook and fellow researchers found that among “abstracts expressing a position on [manmade global warming], 97.1% endorsed the consensus position that humans are causing global warming.”
This is misleading, writes Andrew Montford of GWPF, since the methodology of Cook’s report reveals that the researchers cast such a wide net to create the 97 percent consensus that it encompasses people who don’t believe in catastrophic global warming.
To be part of the “consensus” one need only agree that carbon dioxide is a greenhouse gas and that human activities have warmed the planet “to some unspecified extent” — both of which are uncontroversial points.
“Almost everybody involved in the climate debate, including the majority of sceptics, accepts these propositions, so little can be learned from the Cook et al. paper,” writes Montford. “The extent to which the warming in the last two decades of the twentieth century was man-made and the likely extent of any future warming remain highly contentious scientific issues.