Cost and attainability of meeting stringent climate targets without overshoot

Global emissions scenarios play a critical role in the assessment of strategies to mitigate climate change. The current scenarios, however, are criticized because they feature with pronounced overshoot global temperature goal, requiring long-term repair phase draw temperatures down again through net-negative emissions. Some impacts might not be reversible. Hence, we explore new set net-zero CO2 limited overshoot. We show that upfront investments needed near term for limiting but these would bring economic gains. Our study further identifies alternative configurations systems and roles different sectors regions balancing sources sinks. Even without emissions, removal is important accelerating near-term reductions providing an anthropogenic sink can offset residual hard abate.