Dear Author,

The discussion phase of your manuscript is now over and I encourage you to submit a version revised along the lines of your replies to the referees' comments. Please also consider the following comments:

- Net respiration a suggested by referee #1 does not mean anything and could generate confusion. I recommend using dark respiration which is a commonly used expression.
- For reporting date and time, use ISO 8601 (2018-03-21)
- When discussing DIC-TA plots, you may find the paper by Cyronak et al. (2018; PLoS ONE) useful. I believe it was published after you submitted your manuscript.

Finally, Biogeosciences strongly promotes the full availability of the data sets reported in the papers that it publishes in order to facilitate future data comparison and compilation as well as meta-analysis. This can be achieved by uploading the data sets in an existing database and providing the link(s) in the paper. Alternatively, the data sets can be published, for free, alongside the paper as supplementary information. The ascii (or text) format is preferred for data and any format can be handled for movies, animations etc...

Best regards,
Jean-Pierre Gattuso

Dear Author,

Thank you for submitting a revised version of your manuscript submitted to Biogeosciences, which will be accepted for publication after technical corrections. Please consider the issues below and do not hesitate to get back to me if you have any question or concern:

- use "h" rather than "hr" for "hours"
- "in situ" rather than "in-situ"
- l186: in order to avoid any confusion (NCC:NCP=2ΔDIC/(ΔTA-1)) rather than (NCC:NCP=2ΔDIC/ΔTA-1)
- l189-191: delete last sentence which duplicates information provided earlier
- l241: as mentioned before, net respiration does not mean anything. How about using dark respiration or negative net photosynthesis.

I look forward to seeing this paper published and thank you for considering Biogeosciences to publish these very interesting results.

Best regards,
Jean-Pierre Gattuso