William Richard Peltier, Ph.D., D.Sc. (hc) (born 1943), is university professor of physics at the University of Toronto. He is director of the Centre for Global Change Science , past principal investigator of the Polar Climate Stability Network , and the scientific director of Canada's largest supercomputer centre, SciNet . He is a fellow of the Royal Society of Canada, of the American Geophysical Union, of the American Meteorological Society, and of the Norwegian Academy of Science and Letters.. His research interests include: atmospheric and oceanic waves and turbulence, geophysical fluid dynamics, physics of the planetary interior, and planetary climate. He is notable for his seminal contributions to the understanding of the dynamics of the deep Earth, both concerning the nature of the mantle convection process and the circulation of the visco-elastic interior caused by the loading of the surface by continental scale ice sheet loads. His gravitationally self-consistent global theory of Ice-Earth-Ocean interactions has become widely employed internationally in the explanation of the changes of sea level that accompany both the growth and decay of grounded ice on the continents, both during the Late Quaternary era of Earth history and under modern global warming conditions. His models of the space-time variations of continental ice cover since the last maximum of glaciation are employed universally to provide the boundary conditions needed to enable modern coupled climate models to be employed to reconstruct past climate conditions. A most notable contribution to work of this kind has been his theory of the so-called Dansgaard-Oeschger millennial timescale oscillation of glacial climate. He has been the primary contributor to the global reconstructions ICE-3G, ICE-4G, ICE-5G (VM2), and the most recent ICE-6G (VM5)model. These models are important for the quantification of post-glacial rebound and late Pleistocene to Holocene variations in sea level. Education 1967 B.Sc., University of British Columbia 1969 M.Sc. in Physics, University of Toronto 1971 Ph.D. in Physics, University of Toronto Teaching appointments 1971-72 Lecturer, Department of Physics, University of Toronto 1973-74 Visiting Assistant Professor, Department of Physics, University of Toronto 1974-77 Associate Professor, Department of Physics, University of Toronto 1978 Visiting Professor, Geophysics and Space Physics, U.C.L.A. 1978-79 Steacie Fellowship Leave, NCAR, Boulder, Colorado 1977-79 Associate Professor, Department of Physics, University of Toronto 1979-93 Full Professor, Department of Physics, University of Toronto 1987-88 Guggenheim Fellowship Leave, DAMTP and Bullard Laboratories, Cambridge University, U.K. 1993- University Professor, University of Toronto 2002-2003 Sabbatical Leave,