I’ve written on several occasions about Juckes’ use of cold water G Bulloides as a supposed temperature proxy (following Moberg’s equally indefensible use of this proxy.) It has come to my attention that a leading specialist, David Black of the University of Akron, had already issued a scathing denunciation of Juckes’ use of G Bulloides as a temperature proxy.
Black, an assistant professor of geology at the University of Akron, said that Juckes’ group did not use data on percentage G Bulloides properly in concluding that the 20th century was warm and the MWP ordinary. Black said that the record of G. Bulloides plankton in ocean sediment collected offshore provides a proxy record of the strength of trade winds. But “winds don’t meet any definition of warm, wet, or dry,” he points out.
See the first comment for the rest of the story.