Dear Author,
Thank you for submitting your manuscript “Remineralization rate of terrestrial DOC as inferred from CO2 supersaturated coastal waters” to Biogeosciences.
After considering the reviewers’ comments and your detailed answers, I believe your manuscript may be suitable for publication after minor revisions. In fact, this is a sound and very well written piece of work.
Still, your revision should take into account all the feedbacks provided in the referees’ assessment and it should include all the changes that you agreed in your answers to the reviews.
In particular, I agree with both the reviewers that you should discuss more extensively your application of a fixed decay model for tDOC, rather than alternative possible approaches, e.g. simulating explicitly the tDOC degradation by the BFM bacteria. I also found that the definition of tDOC and equation 1 need to be clarified: does tDOC include a refractory component (Page 4 line 18)? How can this component be compatible with a “zero labile tDOC concentration” in equation 1?
Finally, I would suggest including and discussing Figure S5 of the Supplementary Material in the manuscript, because it is quite an interesting result to evaluate the “best” simulation1YS.
I look forward to receiving your revised manuscript.
Sincerely,
Stefano Ciavatta

Dear Dr. Fransner et al:
Thank you for submitting your revision to Biogeosciences and for addressing satisfactorily all the points raised by the reviewers, as well as my own suggestions.
Kind regards
Stefano

Dear Dr. Fransner et al:
After considering the reviewers’ assessments, I believe your manuscript may be suitable for publication after a further, minor work.
In fact, referee#1 kindly gave you the choice to consider few further suggestions. In particular, I think their suggestion of comparing the performance of simulation BIO with respect to 1Y and 1YS might valorise even further your work.
I am kindly asking you to address all the referee’s points in the manuscript and/or as separate answers, which I will then review.
Sincerely,
Stefano Ciavatta

Dear Filippa Fransner and co-authors,

Thank you for addressing the comments raised by the referee in this revision.
I am pleased to accept your manuscript, "Remineralization rate of terrestrial DOC as inferred from CO2 supersaturated coastal waters" for publication in Biogeosciences.

My congratulations on this clear contribution to the understanding and modelling the fate of terrestrial dissolved organic matter, which is a crucial component of the marine carbon cycle, too often neglected in current shelf-sea ecosystem models.

Sincerely,
Stefano Ciavatta