1 tonne of co2 equals 0.0000000000015 °C of global warming

From my unscientific understanding, if the latest findings of Damon Matthews, a professor in Concordia University's Department of Geography, Planning and the Environment bear out, then the public understanding of AGW will have it's smoking gun. Matthews and his colleagues claim to have found a direct relationship between carbon dioxide emissions and global warming.The latest edition of Nature,