Dear Dr. Stokke,

Thank you for submitting your work to Climate of the Past. I have completed the review of your manuscript and the referees’ reports are on the web. As you had already seen, the referees appreciated the quality of the data but suggested in a very helpful way some revisions with regards to a few fundamental issues. I am not intending to repeat their comments as all are rather clear and constructive. I invite you to resubmit the manuscript after addressing all reviewer comments. The revised version will be sent out for the second-round review.

Thank you again. I am looking forward to receiving the revised manuscript.

All the bests
Zhengtang GUO

Dear

Thanks for the revised version. However, you would need to clarify one issue that the referee raised:

"It appears that the chemical index of alteration has been recalculated, but I'm not sure if it is reflected in Fig. 9 and Fig. 10."

Thanks in advance.

With the best wishes

Zhengtang Guo

Dear Dr. Stokke,

I ma pleased to inform you that your revised version is accepted for publication in CP.
Thank you again for considering CP to publish your work.

With the best wishes

Sincerely

Zhengtang GUO