 Because of the immediate inability to control the temperature at the 1 °C target, the next realistic target is 1.5 °C.There is enough confidence that past emissions alone (pre-industrial time) will not be enough to go beyond the 1.5 °C target.In other words, if all anthropogenic emissions were stopped today (reduced to zero), any increase beyond the 1 °C change for more than half of a degree before 2100 is unlikely.