As well as his position as Professor of Geosystem science at Oxford, he is the Principal Investigator of the
distributed computing project
Climateprediction.net (which makes use of computing resources provided voluntarily by the general public), and was principally responsible for starting this project. He is the Director of the Oxford Net Zero initiative and a
Fellow of
Linacre College, Oxford. Allen has worked at the Energy Unit of the
United Nations Environment Programme, the
Rutherford Appleton Laboratory in Oxfordshire, and the
Massachusetts Institute of Technology. and was a Review Editor for the chapter on predictions of global climate change for the
IPCC Fourth Assessment Report and a co-author of the IPCC October 8, 2018
Special Report on Global Warming of 1.5 °C. His research focuses on the
attribution of recent climate change and assessing what these changes mean for
global climate simulations of the future. Allen also provided the technical expertise for the game
Fate of the World, which is "a PC strategy game that simulates the real social and environmental impact of global climate change over the next 200 years". In 2015, he mentioned that
carbon capture and storage (CCS) should be made mandatory. == Awards and honours ==