Andy Shepherd is Professor of Earth Observation at the University of Leeds, Director of the NERC Centre for Polar Observation and Modelling, Principal Scientific Advisor to the European Space Agency CryoSat satellite mission, and co-leader of the ESA-NASA Ice Sheet Mass Balance Inter-comparison Exercise. He uses satellites to study the physical processes of Earth's climate, and his main contributions to science have involved developing remote observations of the cryosphere, with particular emphasis on radar interferometry and radar altimetry. He has also led field campaigns in Europe, Africa, Greenland and Antarctica, to calibrate and validate satellite missions. Andrew was educated in the Department of Physics and Astronomy at the University of Leicester, and prior to working at Leeds he has held academic posts at University College London, at the University of Cambridge, and at the University of Edinburgh. He has co-authored over journal 100 papers that are often reported in the media, and he has appeared in numerous broadcast documentaries including the BBC’s Climate Change: the Facts, Greta Thunberg: A year to save the planet, and the celebrity University Challenge. Andrew was awarded a Philip Leverhulme Prize in 2008 and a Royal Society Wolfson Research Merit Award in 2014.