. . "Raymond Thomas Pierrehumbert"@en . . "Pierrehumbert, Raymond"@en . . . "Raymond T. Pierrehumbert is the Halley Professor of Physics at the University of Oxford. Previously, he was Louis Block Professor in Geophysical Sciences at the University of Chicago. He was a lead author on the Third Assessment Report of the IPCC (Intergovernmental Panel on Climate_Change) and a co-author of the National Research Council report on abrupt climate change."@en . . . "American geophysicist" . . . .