Characterizing uncertainty in the assessment of evidence is common practice when communicating science to users, a prominent example being the Intergovernmental Panel on Climate Change (IPCC) Assessment Reports (ARs). The IPCC guidance note is designed to assist authors in the assessment process by assuring consistent treatment of uncertainties across working groups (WGs). However, debate on this approach has surfaced among scholars on whether applying the guidance note indeed yields the desired consistent treatment of uncertainties thus facilitating effective communication of findings to users. The IPCC guidance note is therefore a paradigmatic case for reviewing concerns regarding treatment of uncertainties for policy. We reviewed published literature that outline disagreement or dissensus on the guidance note in the IPCC assessment process, structured as three distinct topics. First, whether the procedure is reliable and leads to robust results. Second, whether the broad scope of diverse problems, epistemic approaches, and user perspectives allow for consistent and appropriate application. Third, whether the guidance note is adequate for the purpose of communicating clear and relevant information to users. Overall, we find greater emphasis placed on problems arising from the procedure and purpose of the assessment, rather than the scope of application. Since a procedure needs to be appropriate for its purpose and scope, a way forward entails not only making deliberative processes more transparent to control biases. It also entails developing differentiated instruments to account for diversity and complexity of problems, approaches, and perspectives, treating sources of uncertainty as relevant information to users.
How to cite this article:WIREs Clim Change 2014Change , 5:663-676. doi: 10.1002 recognized as the preeminent boundary organization on climate change. It aims at providing policymakers and other stakeholders (henceforth users) with an assessment of the most recent scientific, technical, and socioeconomic information produced worldwide relevant to the understanding of climate change. The IPCC does not conduct any original research or monitor trends related to climatic parameters. Instead, the IPCC enlists scientists to participate in the assessment of this body of knowledge and report their findings in Assessment Reports (ARs). The assessment process takes place within the terms This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Advanced Reviewwires.wiley.com/climatechange and scope of three working groups (WGs), namely: physical science basis for climate change (WGI); its impacts, including vulnerability and adaptation (WG II); and mitigation (WGIII). As an institution that corroborates and synthesizes knowledge on climate change, it catalyzes important public policy dec...