Dear Prof. Paillard,

Thank you for submitting your manuscript entitled "The Plio-Pleistocene climatic evolution as a consequence of orbital forcing on the carbon cycle” [Paper #cp-2017-3] to Climates of the Past. I have now received an assessment of the two reviewers, as well as your response to the reviewers concerns.

I consent with the reviewers that this paper is well-written but requires a moderate to major revision based on following major issues:

1. Other sources than volcanic carbon emission need to be considered on the millennial timescale like petrogenic carbon oxidation
2. The model formulation can be more refined and a missing term described in the text need to be included

The feedback provided in the reviewer assessments of your manuscript is important and should be taken into account as you complete your revision. Please include a marked-up manuscript version showing the changes made in your revision. I encourage you to submit a suitably revised version of your manuscript by September, 1, 2017.

Sincerely,
Arne Winguth
Editor

Dear Prof. Paillard

Thank you for addressing the comments raised by the referees in this revision.
I found only a few typing error that need to be completed before the publication
1. Remove the word "dramatically" throughout the text.
2. Figure 3 need to include labels a) and b) in the figure. Also replace a/ to a) and b/ to b) in the figure caption.

We are pleased to inform you that your revised manuscript, "The Plio-Pleistocene climatic evolution as a consequence of orbital forcing on the carbon cycle" [Paper #cp-2017-3], has been now accepted for publication in the journal “Climate of the Past”.

Sincerely,

Arne Winguth
Editor