Criticism of The IPCC Fourth Assessment Report - Open Letter From Scientists

Open Letter From Scientists

On March 13, 2010, an open letter from scientists in the US on the IPCC and errors contained in its Fourth Assessment Report was sent to federal agencies in the United States. The published letter states that it was signed by 250 scientists, the vast majority of whom are climate change scientists who work at leading U.S. universities and institutions, including both IPCC and non-IPCC authors. The stated objective of the letter is to “bring the focus back to credible science, rather than invented hyperbole”. As well as dealing in some detail with the errors that have been reported and their implications, if any, and urging the IPCC to "become more forthcoming in openly acknowledging errors in a timely fashion, and continuing to improve its assessment procedures to further lower the already very low rate of error", the letter states:

Many in the popular press and other media, as well as some in the halls of Congress, are seizing on a few errors that have been found in the Fourth Assessment Report (AR4) of the Intergovernmental Panel on Climate Change (IPCC) in an attempt to discredit the entire report. None of the handful of mis-statements (out of hundreds and hundreds of unchallenged statements) remotely undermines the conclusion that “warming of the climate system is unequivocal” and that most of the observed increase in global average temperatures since the mid-twentieth century is very likely due to observed increase in anthropogenic greenhouse gas concentrations. —Open letter from scientists, http://www.openletterfromscientists.com/ (dead link)

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