John Tierney:

The new federal report on climate change gets a withering critique from Roger Pielke Jr., who says that it misrepresents his own research and that it wrongly concludes that climate change is already responsible for an increase in damages from natural disasters. Dr. Pielke, a professor of environmental studies at the University of Colorado, asks:

[Why] is a report characterized by [White House] Science Advisor John Holdren as being the “most up-to-date, authoritative, and comprehensive” analysis relying on a secondary, non-peer source citing another non-peer reviewed source from 2000 to support a claim that a large amount of uncited and more recent peer-reviewed literature says the opposite about?

You can check out Dr. Pielke’s blog for a detailed rebuttal of how the report presents science in his area of expertise, the study of trends in natural disasters and their relation to climate change.

While the new federal report (prepared by 13 agencies and the White House) paints a dire picture of climate change’s impacts, Dr. Pielke says that the authors of this new report, like those of previous reports from the Intergovernmental Panel on Climate Change and the Stern Review, cherrypick weak evidence that fits their own policy preferences. He faults all these reports for all relying on “non-peer reviewed, unsupportable studies rather than the relevant peer-reviewed literature” and for “featuring non-peer-reviewed work conducted by the authors.”