Data stewardship is an essential element of the publication process. Knowing how to enact data polices that are described only in general terms can be difficult, however. Examples are needed to model the implementation of open-data polices in actual studies. Here we explain the procedure used to attain a high and consistent level of data stewardship across a special issue of the journal Climate of the Past. We discuss the challenges related to (1) determining which data are essential for public archival, (2) using data generated by others, and (3) understanding data citations. We anticipate that open-data sharing in paleo sciences will accelerate as the advantages become more evident and as practices that reduce data loss become the accepted convention.
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Acknowledgements. We thank the authors of the PAGES 2k special issue, Copernicus Publications, and the paleo-data repositories, who worked with us to develop practices to help reduce the loss of valued data. We are grateful to those who reviewed an earlier version of the paper and contributed to the frank debate in the interactive discussion, including its spin-offs on social media. This paper is a contribution to the Past Global Changes (PAGES) Data Stewardship Integrative Activity. PAGES is supported by the US National Science Foundation, and the Swiss Academy of Sciences. Helen V. McGregor and Nerilie J. Abram are supported by ARC Future Fellowships. Darrell S. Kaufman is funded by NSF-AGS-1602105.