Since 1990, IPCC assessments have included designated terms and other approaches for communicating the expert judgements made by authors . The goal of such methods has been consistent treatment of uncertainties in assessing and communicating the current state of knowledge. Because terms such as 'probable' or 'likely' hold very different meanings to different people, a standardised approach is essential for enabling consistent interpretation . Since its 2001 assessment, IPCC authors have applied common guidance on expert judgement across the Working Groups . The AR5, iteratively building from past IPCC guidance, was the first report to apply a single framework consistently across the Working Groups and their diverse topics and associated disciplines . The outcome
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report