Understanding the carbon dioxide removal range in 1.5 °C compatible and high overshoot pathways

Abstract Carbon dioxide removal (CDR) features prominently in the 1.5 °C compatible and high overshoot pathways IPCC’s Sixth Assessment Report (AR6, WGIII). However, amount of CDR varies considerably among scenarios. We analyze range volumes AR6 WGIII by exploring relationships between variables as potential driving forces, focusing on 2050 scenario properties linked to reaching net-zero CO 2 . It is also shown how relative absolute contribution total mitigation up until substantially differs across The 2100 cumulative throughout 21 st century were most strongly correlated degree which emissions are reduced a means timing robustness analyzed was evaluated comparing different filtering data-cleaning approaches. Beyond cleaning, additional factors that influence deployment scenarios, such discount rates, carbon price trajectories, design choices, discussed.