John F. Mitchell is the Chief Scientist at the UK Meteorological Office, a visiting Professor at the University of Reading and an Honorary Professor at the University of East Anglia. He has spent over thirty years on research to understand and predict climate change. He has been involved in all four IPCC reports, including being a convening lead author in 1990 and 2001. In 1997 and 1998 he shared the Norbert Gerbier-Mumm Prize with other colleagues, and in 2004 received the Hans Oeschger medal from the European Geophysical Union. He is a Fellow of the Royal Society and the Institute of Mathematics and its Applications, and a member of the Academia Europaea and of the Natural Environment Research Council.