Organizing Policy relevant Expertise on Climate Action: the IAM Community
Résumé
The IPCC, in its regular assessment of climate change research, covers a wide range of sciences and expertise, with three Working Groups with different focus (physical basis, impacts and adaptation, mitigation). Whereas physical climate models relevant to Working Group I have received much attention, few studies have tried to unpack to plurality of scientific perspectives that make up climate change research, and the relationships among them. In particular, little is known about expertise on climate change adaptation and mitigation. We seek to analyse one increasingly influential source of expertise on mitigation, that is within Working Group III of the IPCC: Integrated Assessment Models (IAMs), which were prominent within the AR5. We retrace how IAM research organised into a community around the production of socio-economic scenarios during the preparation of the IPCC AR5 (2005-2014). Our objective is to describe the co-emergence of a research community, its instruments, and its domain of applicability. We highlight the role of the IPCC process in the making of the IAM community, showing how IAM worked their way to an influent position, and analyse elements of the repertoire that served to organise collective work on scenarios in interaction with the IPCC and the European Union, and which now frames the community and its epistemic practices. This is a step towards a more refined understanding of climate expertise and of the dynamics and specifics of policy-relevant science.
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