Dear Ibraim Erkan and co-authors

Thank you for your careful response to the review comments. I would like to invite you to submit a suitably revised version of your manuscript. I will send out the revised manuscript to one of the reviewer for a final check before potential acceptance.

Please note the following instruction copied from the journal's web site (https://www.biogeosciences.net/for_authors/submit_your_manuscript.html) :
The author's response in case of "minor" or "major" revisions must be submitted as one separate *.pdf file (indicating page and line numbers) structured in a clear and easy-to-follow sequence: (1) comments from referees/public, (2) author's response, and (3) author's changes in manuscript. Regarding author's changes, a marked-up manuscript version (track changes in Word, latexdiff in LaTeX) converted into a *.pdf and including the author's response must be provided.

Thank you for submitting your work to Biogeosciences and to the ICDC10 Special Issue.

With kind regards, Fortunat Joos

Dear colleagues

Thank you for your careful revison of the manuscript. The revised manuscript has been assessed by one of the original reviewer. The reviewer recommends publication after minor revision. I am happy to accept your manuscript for publication given that the remaining review comments are addressed.

Most notably, the reviewer has reservations regarding the accuracy of the sample values as the sample values are well outside the range of the standards. Please indicate at a prominent place that many isotope values are outside the range of the standards which can be problematic to precise calibration. This point could for example be added in the conclusion or in the abstract (if word counts permit). Please also consider the points 2 and 3 of the reviewer in your next revision of the MS.

Thank you for submitting your work to Biogeosciences. With best wishes, Fortunat Joos

Dear Authors

Thank you very much for your latest revision and your clear and careful response. I am very much looking forward to see this piece of high quality science published in Biogeosciences.

Thank you for submitting your work to Biogeosciences and to the ICDC10 Special Issue.

With kind regards, Fortunat Joos