Two-stage public peer review as practised in the scientific journal Climate of the Past (CP) and its discussion forum Climate of the Past Discussions (CPD). 1. Submission; 2. Access review; 3. Technical corrections; 4. Publication as Discussion paper; 5. Comments; 6. Final response; 7.Post-discussion editor decision; 8. Revisions; 9. Peer-review completion; 10. Final revised publication.