Thank you for your submission to Biogeosciences. We received a total three reviews, all from highly qualified researchers in this field. All agree that this MS addresses a topic of interest to Biogeosciences readers, but numerous corrections, edits, and suggestions for improvement were offered. I will be happy to consider a revised submission that substantively addresses these reviewer comments. From reading your responses to the reviewers in the Interactive Discussion, it appears that you are well on your way to addressing the reviewer comments.

Please be careful to clearly address or rebut all of the reviewers' comments, and please be sure that the rebuttals are thoroughly justified in your responses, and importantly, that the clarifications provided in your responses to reviewers are clearly incorporated into the manuscript text. Finally, please detail how the text was revised according to the reviewer comments when submitting your revised manuscript. Thank you for these edits, and for your support of Biogeosciences.

Sincerely,

Michael N. Weintraub
Associate Editor
Biogeosciences

Thank you for your revised submission to Biogeosciences. All three original referees reviewed your revised manuscript and agree that it is nearly ready for publication, pending a small number of additional minor revisions. Please see their referee reports for details.

Please clearly describe how the text was revised according to these comments when submitting your revised manuscript. Thank you for your efforts, and for your support of Biogeosciences.

Sincerely,
Mike Weintraub
Associate Editor
Biogeosciences

Thank you for your revised submission to Biogeosciences. This interesting and well-written manuscript is now ready for publication. Your efforts to improve this paper are appreciated. Thank you for your hard work, and for your support of Biogeosciences.

Sincerely,
Mike Weintraub
Associate Editor
Biogeosciences