United KingdomThis article explains the new CMIP7 emissions scenarios introduced for climate modeling, replacing the earlier Shared Socioeconomic Pathways (SSPs) used in the IPCC's sixth assessment report (AR6). The new scenarios focus on emissions trajectories rather than radiative forcing levels and incorporate current and evolving climate policies. They show a significant reduction in high-end emissions projections, with the highest scenario predicting up to 3.3°C of warming by 2100, down from previous estimates of around 4.6–4.9°C. The lowest emission scenarios have also been adjusted upward, making 1.5°C warming 'unavoidable' in some cases. The article discusses the implications of these changes for future climate projections and outlines key differences between the new scenarios and their predecessors.
Bias read (Center): The article presents an objective overview of scientific developments in climate modeling without overtly favoring any political ideology. It describes the technical changes in emissions scenarios and their implications for climate projections, focusing on data and expert analysis rather than taking
