Table 1.

Climate and socio-economic scenarios obtained by pairing RCPs with SSPs

Scenario	Description
Zero Emissions	GHG emissions stop immediately after 2020
1.5 °C Target	50% chance of staying below 1.5 °C relative to pre-industrial in 2100
2 °C Target	50% chance of staying below 2 °C relative to pre-industrial in 2100
2.5 °C Target	50% chance of staying below 2.5 °C relative to pre-industrial in 2100
NDCs	Current nationally determined contributions (pledges) to reducing GHG emissions
NDCs Partial	Around 30% of the NDCs are not met, consistent with long-term effects of the US’s withdrawal
Business as usual (BaU)	Projections for GHG emissions without NDCs