Dear Mr. Saatlink,

two referees have provided comments on your manuscript. They found it suitable for publication after you account for their critical points, such as better description of statistical significance of your results. You have addressed their concerns in your reply, and I suggest you to prepare and upload the revised manuscript and point-by-point response letter where you explain what is changed in the manuscript (eg manuscript with tracked changes). One of referees prefers to see the revised manuscript again, therefore I take the option of major revision. As soon as the reviewer provide comments on the revised paper, I'll make further decision on the manuscript. If the referee doesn't have time to review the revised paper, I'll do the Editor review.

Yours sincerely,

Victor Brovkin

Dear Mr. Saatlink,

please account for few minor comments suggested by the referee and submit the revised manuscript and the response letter.

Yours sincerely,

Victor Brovkin

Dear Mr. Saaltink,

I am pleased to accept your paper for publication in Biogeosciences.

Yours sincerely,

Victor Brovkin