The revisions to this manuscript are not acceptable in the present form. The English language has to be checked by ALL the authors of the manuscript before it is resubmitted. This is the last round of submission before I make a decision, please put much more effort to check that the text is sound. Your first changes to the previous version contain a multitude of grammatical and typographical errors:

" It show be noted that Fig. 2 show the thickness of annual layers and does not represent the linear change in accumulation rate. In order obtain an accumulation rate the layer thickness must be corrected for the compression which occurred since it was deposited (e.g. Paterson and Waddington, 1984) which is out of the scope of this paper."

Sincerely

Yves Balkanski

After reading all the answers to the 2 reviewers and a back and forth to improve the wording in several parts of this paper, I note that a lot of improvement and clarifications have benefited a earlier version thanks to the reviewers.

This paper is now ready to be published in ACP.

Sincerely,

YVes Balkanski