At Climate of the Past, there is a pre-print by Darrell Kaufman and others on the data stewardship policies adopted by the PAGES 2k special issue.
This is perhaps an early reaction to a likely trend as more bodies encourage researcher to adopt an ‘open science’ approach to their work.
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The policy was closely aligned to the regular Climate of the Past policies (which are among the better policies in palaeo journals), but with more “must”. The discussion/review is ongoing, with a co-editor-in-chief encouraging further contributions to the discussion.