Dear Dr. Fu

I have read reviewers comments and your detailed replies to these comments carefully, and would like to recommend you to revise your manuscript based on reviewers comments and your responses. In particular, you will need to consider difference and similarilites in your revised manuscript comparing to the previous similar modeling work by Cabre et al. (2015), Popp et al. (2013), Dutkiewicz et al., (2013). Also, you will need to incorporate some of the reviewers suggestions in your revised manuscript, and document with details on how you address these concerns in your revised manuscript. One reviewer suggested to shorten your manuscirpt by removing some figures with detailed comparisons, which I agree with the reviewer. Therefore, I suggest you to move some figures to the Supplement material section in the revised manuscript, and reduce the text associated with these removed figures.

We will send out your revised manuscript for another round of reviews before I can make the final decision.

Thank you for considering Biogeosciences to publish your work, and I am sorry for the delay for handling your submission.

Regards, Fei

Dear Dr. Fu

We have only received one reviewer comments for your revised manuscript. Based on your revised manuscript, replies to previouse two reviewers comments and concerns, and the recommendation from the reviewer for your revised manuscript, I would like to recommend your manuscript to be published with some minor revisions. Please address the reviewer's technical corrections and update references accordingly. Once you incorporate these changes, then your manuscript will be finalized for publication.

I apologize for the delay handling your manuscript. Thank you for considering Biogeosciences to publish your research work.

Regards, Fei

Dear Dr. Fu

We accept your revised and final manuscript for publication. Congratulations. Thank you for considering Biogeosciences to publish your research work.

Regards, Fei