Dear Dr. Simone,
Thank you for your response to the comments of the two referees. Please, provide a revised manuscript based on this discussion. I look forward to receiving your revised manuscript.
Best wishes,
Christoph Heinze

Dear Dr. Simone,
Thank you very much for your revised manuscript. I realised that in your "author's response" to the reviewer comments, you still use "we will" instead of "we have done" or "we did" at several occasions. This makes the response confusing, as one does not know whether you really have done the changes or still intend to do so. As others may read your response file as well, this needs to be corrected. I expect that this can be corrected quite quickly. Please, send your (corrected) response-file (including the manuscript with tracked changes), plus the manuscript and the supplementary information again. Thank you for your understanding. I look forward to your files. Best regards, Christoph Heinze

Dear Dr. Simone,
Thank you for your revised manuscript version.
I accept your manuscript for publication in Biogeosciences under the condition that the following technical corrections are carried out by you:
1. Under "Data availability" you write "Until then, data available upon request."
Please, add the information from whom the data are available (name, email address).
2. The reference "Gattuso et al., 2020" needs updating. The paper has been published and is no longer a discussion paper (see https://essd.copernicus.org/articles/12/1697/2020/).
Thank you very much for using the open access way of publishing your work. Congratulations with your new paper. Best wishes, Christoph Heinze