IPCC caught out with an old, known, and uncorrected error pending their new AR5 report

UPDATE: 11:15AM PDT 8/20/13 The IPCC reads WUWT, and directly responds below – Anthony Spot the error. The IPCC can’t. Story submitted to WUWT by Tony Thomas Leaked reports of the Fifth IPCC Report, due next month, say the IPCC experts are now 95% sure that human activities and emissions are the main cause of…

The IPCC has a real pack of trouble on its hands

By Paul C. “Chip” Knappenberger and Patrick J. Michaels The United Nations Intergovernmental Panel on Climate Change (IPCC) is in the midst of finishing its Fifth Assessment Report (AR5) on the topic. Based on a series of content leaks, it seems as if the AR5 has so much internal inconsistency that releasing it in its…

Michael Mann says climate models cannot explain the Medieval Warming Period – I say they can't even explain the present

Ice core data shows CO2 levels changed less than 10 parts per million from 1600-1800 during the MWP. From the Hockey Schtick:  A new paper from Schurer et al (with Mann as co-author) finds that climate “models cannot explain the warm conditions around 1000 [years before the present, during the Medieval Warming Period] seen in some…

BREAKING: an encouraging admission of lower climate sensitivity by a 'hockey team' scientist, along with new problems for the IPCC

UPDATE: Annan now suggests the IPCC “is in a bit of a pickle”, see below. UPDATE2: Title has been changed to reflect Annan’s new essay, suggesting lying for political purposes inside the IPCC. Also added some updates about Aldrin et al and other notes for accuracy. See below. Readers may recall there has been a…

More IPCC AR5: THE SECRET SANTA LEAK

Guest post by Donna Laframboise Thanks to a whistleblower, draft versions of most chapters of the IPCC’s upcoming report are now in the public domain. Among the new revelations: the IPCC has learned nothing from the Himalayan glacier debacle, bringing in Greenpeace again. A week before Christmas, three data sticks containing 661 files and amounting…

AR5 Chapter 11; Hiding the Decline (Part II)

Guest post by David M. Hoffer In my first two articles on the leaked AR5 Chapter 11 (near-term projections) I looked at the caveats with which the IPCC is now surrounding their projections, and the lengths to which they are going to preserve the alarmist narrative. The caveats go to such ridiculous lengths that there…