The RFC framework communicates scientific understanding about accrual of risk in relation to varying levels of warming for five broad categories: risk associated with  unique and threatened systems,  extreme weather events,  distribution of impacts,  global aggregate impacts and  large-scale singular events. The RFC framework was first developed during the Third Assessment Report along with a visual representation of these risks as 'burning embers' figures, and this assessment framework has been further developed and updated in subsequent IPCC reports including AR5. RFCs reflect risks aggregated globally that together inform the interpretation of dangerous anthropogenic interference with the climate system.  
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report