OverviewGHG emissionGlobalcarbonemissionwarming
Limiting warming to 1.5°C above pre-industrial levels means that the greenhouse gas emissions need to be reduced rapidly in the coming years, about halved by 2030, and brought to zero soon after around mid-century. The CAT evaluates progress towards this global goal by quantifying the aggregate effects of current policies and the pledges and targets put forward by countries and compares these with the emissions levels consistent over time with the 1.5°C limit using the MAGICC climate model.