"In a new study, a team climate scientists led by
Ben Santer sought to answer this question."
Ben Santer formerly of "
University of East Anglia's Climatic Research Unit"
i.e. the place that got hacked and in their emails they admitted to performing
fake science
Come on guys, you're making this too easy for us, first you post using an the official establishment propaganda source of The Guardian

which is just as bad as the BBC, next you use a known fake scientist, who produces fake results for money, please try harder, at least give us some kind of challenge, otherwise debunking you becomes boring