Dear authors,

Thank you for your in depth revision of your manuscript, and detailed response to the comments of the two reviewers. One reviewer asked to review the revised manuscript, and therefore the revised manuscript will be sent for a new review by Dr. Emilie Capron. Thank you for your patience, Valerie Masson-Delmotte.

Dear authors,

One reviewer still requires major revisions before your manuscript is suitable for publication. Please consider carefully these suggestions, and provide a detailed answer on how they are accounted for in a revised manuscript. I agree with this reviewer that the introduction must be revised, and that the flow of information in the result section would benefit from a more concise and focused approach. You can provide details in the supplementary material. Sincerely, Valerie Masson-Delmotte.

Dear authors,

Thank you for your patience. I attach an annotated manuscript where I still express a number of concerns, following your response to the review comments of one reviewer, and based on this last manuscript version. Please consider these comments carefully and send a final revised manuscript. Thank you, Valerie Masson-Delmotte.

Dear Authors,

Thank you very much for your revised manuscript, and for your efforts to consider the last round of suggestions and comments. I am pleased to accept your manuscript for publication in Climate of the Past.

Sincerely, Valérie Masson-Delmotte.