Dear Dr. Leseurre,
Thank you very much again for the submission of your manuscript and many thanks also for your response to the two reviewers. Both reviewers have been quite critical. A substantial improvement of the manuscript would be necessary before it may be considered for Biogeosciences. This improvement would be needed with respect to the scientific contents and also the presentation quality. Also the scientific significance would need to be described better. You employ an exciting data set for your study and the analysis should do justice to this data set. You already provided some promising outline for revisions in your response to the reviewers. Because the modifications would be quite substantial, I will give you more time for the revisions than the usual period. Please, send in your revised manuscript by 30 September 2019 the latest.
Best regards,
Christoph Heinze

Dear Dr. Leseurre,
Thank you very much for the revised version of your manuscript. As you can see from the referee report, there remain a number if issues still to be clarified. There are also concerns about the presentation quality. The manuscript is very complex, which makes it quite hard for the reader to filter out the actual core message. It would be good to streamline the manuscript accordingly so that it will be easier to read and to grasp at. I look forward to your revised manuscript taking these issues into account for further improvements.
Best regards, Christoph Heinze

Dear Dr. Leseurre,
Thank you very much for your 2nd revised version, the supplement, and the response to the referee. This remains a complex manuscript. For the marine carbon cycle specialists, however, the data set that is presented and evaluated is of high value. I also see, that you tried to amend the critical points as far as it is in your current power. Therefore, I decided now to accept your manuscript for publication in Biogeosciences.
Best regards, Christoph Heinze