Survey: Less Than Half Of All Published Scientists Endorse Global Warming Theory
http://www.dailytech.com/Survey%20Less%20Than%20Ha...
Of 528 total papers on climate change, only 38 (7%) gave an explicit endorsement of the consensus. If one considers "implicit" endorsement (accepting the consensus without explicit statement), the figure rises to 45%. However, while only 32 papers (6%) reject the consensus outright, the largest category (48%) are neutral papers, refusing to either accept or reject the hypothesis. This is no "consensus."
The results have been submitted to the journal Energy and Environment, the reference for which eludes me at this moment, I'll try and find it.
However, the article goes on to say..
In 2004, history professor Naomi Oreskes performed a survey of research papers on climate change. Examining peer-reviewed papers published on the ISI Web of Science database from 1993 to 2003, she found a majority supported the "consensus view," defined as humans were having at least some effect on global climate change.
That paper is:
Oreskes (2004). Beyond The Ivory Tower: The Scientific Consensus on Climate Change. Science 306:1686. See also an editorial by Oreskes:
Undeniable Global Warming.