The Open Science approach of the Intergovernmental Panel on Climate Change (IPCC)

The introduction of Open Science and FAIR data practices into the Sixth Assessment Report (AR6) of the Intergovernmental Panel on Climate Change (IPCC) has enhanced the transparency of its results. The approach focuses on the figure generation process and the traceability of figures within the reports. It makes the report contents more visible and accessible to scientists and users, fostering reusability and subsequent scientific and technical progress. Challenges lie in the scale, the number of figures, and thevariety of a sometimes very complex data analysis used to generate figures. In addition, the authors, organized into chapters, have many different ways of working that need to be taken into account when framing the data documentation requirements for authors. The contribution introduces IPCC’s revised approach to Open Science for the current Seventh Assessment Report (AR7; Stockhause et al., 2024), highlighting the importance of principles like transparency, FAIR data and TRUSTworthy repositories, but also the high value of collaborating with external partners in the climate and data sciences, e.g. WCRP Coupled Model Intercomparison Project (CMIP) and Coordinated Regional Climate Downscaling Experiment (CORDEX), Research Data Alliance(RDA) and the geosciences unions EGU/AGU/JpGU.