Dear authors,

Thank you for your comprehensive response to the comments of the two referees. As both referees acknowledge, the manuscript represents a monumental effort that will make a valuable contribution to the community.

I have carefully reviewed the revised manuscript, as well as your response to the referees’ comments. The manuscript is now very close to the stage where it is ready for publication in Geoscientific Model Development. However, before I can make the decision to accept it for final publication, there are a few minor comments that I would like you to consider.

* I find Figures A and B in the response, and the associated discussion, to be insightful. I understand that the numerical data is already included in the manuscript (Tables 3 and D1-D8), as is some of the discussion. However, I suggest that you consider adding the figures and the rest of the discussion to the manuscript as well.

* The equations at lines 452-453 might be better formatted as stand-alone equations, rather than as inline text.

* I agree with the statement at lines 522-523, but it should be supported by at least one reference.

* At line 646, the word “essentially” appears to be unnecessary.

* Your code availability statement says “Python scripts used to process data and generate figures (Tsujino et al., 2020b) are available at https://doi.org/10.26300/e178-4220. The most recent version is available at https://github.com/HiroyukiTsujino/OMIP1-OMIP2.”. I have two comments on this: (a) It is undesirable to have two different versions of the same dataset. I do not see how the scripts can change after the manuscript has been published, so the github link appears to be unnecessary. (b) Will the Brown University Digital Repository allow you to edit the metadata for the dataset later, to reflect the final citation for the manuscript? If not, then please consider using a repository such as Zenodo instead.

* You have archived the supplement separately on the Brown University Digital Repository. This is unnecessary, as the supplement will be permanently archived on the GMD website. Please remove the statement “Supplemental materials for this paper (Tsujino et al., 2020a) are available at https://doi.org/10.26300/1sgm-dz11.”.

Please do not hesitate to contact me if you have any questions.

Kind regards,
Steven Phipps
Handling Topical Editor

Dear authors,

Thank you for submitting an updated version of your manuscript.

It is now ready for publication, and I am therefore delighted to accept it for publication in Geoscientific Model Development.

Kind regards,
Steven Phipps
Handling Topical Editor