Scenarios are described in SR1.5  and SRCCL  as a description of how the future may develop based on a coherent and internally consistent set of assumptions about key driving forces  and relationships. Scenarios are neither predictions nor forecasts but are used to provide narratives and trajectories equipped with alternate outcomes. SR1.5 and the SRCCL describe a range of scenarios methods and how scenarios are used to guide risk management decision-making. Scenario analysis includes a range of potential future conditions from low-end and mid- range to high-end projections. Scenarios can also include a temporal component, that is, short term, medium term and long term, as defined in the SROCC .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report