Pete Smith is a Professor of Soils and Global Change at the University of Aberdeen and is an ecosystem modeller working on terrestrial biogeochemical modelling since 1994. He has been an integral member of many projects including NERC, UKERC and ETI. He is also Science Director of the Scottish Climate Change Centre of Expertise and Director of Food Systems for the Scottish Food Security Alliance Crops. Since 1996, he has served as Convening Lead Author, Lead Author and Author for the Intergovernmental Panel on Climate Change (IPCC). He was the Convening Lead Author of the Agricultural Mitigation chapter of the IPCC Fourth Assessment Report and for the Agriculture and Forest (including bioenergy) Mitigation chapter of the IPCC Fifth Assessment. He has been modelling bioenergy systems since 1995 and has served as an advisor on Bioenergy to the Committee on Climate Change (CCC).