Stephen is a Professor, Chair in Climate Change, at the University of Exeter, UK. He leads the international land carbon model intercomparison (TRENDY) that delivers annually to the Global Carbon Budget. He has an H-index of 102 (cited 58,000 times), and is a Thomson Reuters highly cited researcher in geosciences in 2017 and 2019-23, ranked 14 in the Reuters hot list of world’s top climate scientists.