Artful Bias or Outright Deception?
The IPCCs assessment reports and especially its summaries for policymakers have been criticized from many quarters and have been shown to contain many errors and weaknesses. One of the most recent criticisms, and perhaps the most devastating, is the one authored by Dr. David Wojick, president of Climatechangedebate.org, who has a Ph.D. in mathematical logic and philosophy of science.
In the report, The UN IPCCs Artful Bias, Wojick analyzes the Summary for Policymakers (SPM) for Working Group I, which deals with the science, of the IPCCs Third Assessment Report. According to Wojick, the SPM “is an artfully constructed presentation of just the science that supports the fear of human induced climate change. It is as one sided as a legal brief, which it resembles.” Wojick goes on to argue, “A line by line analysis of the SPM reveals that all of the science that cuts against the theory of human interference with climate has been systematically omitted.”
The first problem that Wojick presents is that the IPCC ignores the errors in the surface temperature data. The SPM claims, “The global average surface temperature has increased over the 20th century by about 0.6 degrees C.” The certainty expressed in this statement, says Wojick, is unwarranted.
Despite the many problems with the surface temperature record, the IPCC only briefly mentions the urban heat island effect and claims that all errors have been taken into account, without explanation. But as Wojick explains, “There is no way to correct for most measurement errors, including the urban heat island effect. The magnitude of these errors, which may be quite large, is simply unknown. The supposed corrections that have been made to date are merely guesswork.”
Moreover, the temperature data that we have is not a random sample of the Earths surface, but a “convenience sample,” or data that is the most convenient. The IPCCs “reference to data gaps,” says Wojick, “suggests that sometimes a station did not record, or the data is bad, not that there is in actuality no data for most of the earth, most of the time. So the fact that we merely have a convenience sample is either omitted, or cleverly disguised.”
The importance of this point is that the IPCC has calculated its confidence levels as if it had a random sample. Given that the sample is not random, the margin of error in the data is much larger than suggested by the IPCC.
Other problems with the IPCCs SPM is how it glosses over the “profound contradiction” between the satellite temperature record and the surface record, the huge uncertainties with regard to aerosols, the omission of natural sources of greenhouse gas emissions, and the inadequate treatment of the chaotic nature of the Earths climate. The full critique can be found at www.john-daly.com.
No Rise in New England Hurricanes
Another peer-reviewed scientific study of hurricanes has failed to find a trend in hurricane activity in the United States, let alone a link between hurricane activity and global warming. The study, published in Ecological Monographs (71: 2001), looks at hurricane data from 1620-1997.
What the authors found was that, “there was no clear century-scale trend in the number of major hurricanes.” They did find that there were more lower intensity hurricanes reported in the 19th and 20th centuries than there were in the 17th and 18th centuries. But the authors attribute the difference to “improvements in meteorological observations and records since the early 19th century.” Also, the data from the last 200 years show that there were five of the strongest category hurricanes reported in the cooler 19th century and only one reported during the 20th century.
Announcements
- The Skeptical Environmentalist Looks at Global Warming and the Kyoto Protocol
Professor Bjorn Lomborg will speak at a Cooler Heads Coalition congressional and media briefing from noon to 1:30 PM on Thursday, 4th October, in Room HC-5 of the U. S. Capitol. Lomborg is author of the Skeptical Environmentalist, which was published in the U. S. this month by Cambridge University Press and which has received rave reviews. Those wishing to attend the briefing must Rsvp to Michael Mallinger at CEI: telephone (202) 331-1010, ext. 254, or e-mail: mmallinger@cei.org. Please give your name, affiliation, phone number, and e-mail address.