Global GHG emissions under different scenarios and the emissions gap 2030-2050
The median estimate of global greenhouse gas emissions in 2030 under current policies is 56 billion metric tons of carbon dioxide equivalent (GtCO₂e). This results in an emissions gap of 16 GtCO₂e consistent with limiting global warming to below two degrees Celsius. If the unconditional nationally determined contributions (NDCs) are fully implemented, the below two degrees Celsius emissions gap would be reduced to 14 GtCO₂e. The full implementation of the conditional NDCs would reduce the emissions gap by a further three GtCO₂e.