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. Oreskes’ work has been repeatedly cited, but as some of its data is now nearly 15 years old, its conclusions are becoming somewhat dated.
Medical researcher Dr. Klaus-Martin Schulte recently updated this research. Using the same database and search terms as Oreskes, he examined all papers published from 2004 to February 2007. The results have been submitted to the journal Energy and Environment, of which DailyTech has obtained a pre-publication copy. The figures are surprising.
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.”
This seems likely to be a rerun of Benny Peiser’s effort. (Peiser said that 34 of Oreskes’ abstracts rejected the consensus. Eventually he downgraded the number to just one. I’ve sent off an email to see if I can get a copy of the paper, but in the mean time we can check some stuff.
Searching for “global climate change” in the Web of Science and restricting the search to “Papers” and “since 2004″ gave me 576 results. A bit more than Schultz, but some were published after Feb 2007. I’ve put all the results on the web here. Christopher Monckton has posted seven of the papers that Schultz reckons explicitly reject the consensus. You’d think that those would the best seven, so I looked at them. He does better than Pieser, because three of them really so reject the consensus.
Cao just says that there are uncertainties in our understanding of the carbon cycle. Leiserowitz just studied public opnion of the risks of climate change. Moser was not one of the 576 papers. Lai et al ends up implicitly endorsing the consensus by suggesting that reducing CO2 emissions will reduce global warming.
The three that do reject the consensus are Gerhard, which was published in the American Association of Petroleum Geologists Bulletin; Shaviv arguing for cosmic rays, which doesn’t explain how they could make a difference over the past 50 years when the cosmic rayflux hasn’t changed over that period; and Zhen-Shan and Xian, which is just a rubbish paper that should not have been published. (What is the next number in this sequence? 60. Their answer is 60.)
Anyway, feel free to pick a month or a year at random and classify some abstracts. Just post a comment something like this:
endorseex: 123 126