As you know the two reviewers were rather supportive and both requested minor revisions. Thank you for your responses. Please prepare a revised version in which you make the changes you have offered in your responses. I agree that it makes sense to keep it as a single paper (response to referee 1).

Thank you for your revised manuscript. I am happy to accept it subject to minor revisions, of which the most important is to reconsider the title.
1. I think your new title is too definite, as you say you "explain" the reduced TAC. In fact your simulations are capable of explaining it and actually overestimate the reduction in TAC. I would therefore rather see a softer word such as "contributing to reduced TAC" or "which could explain".
2. line 41: A sentence shouldn't start with "And", just remove the word?
3. line 72: replace "in lack of" with "in the absence of"
4. Fig 6 caption, line 4 "by" not "my" in "my the refreezing"
5. line 207, a sentence can't start with "While" like this. I suggest a comma at end of previous sentence and run onto this one.
6. line 233, "these uncertainties" not "this"
7. line 331, appendix spelling second time, but anyway I am not sure why this is written twice.
I am sure I missed other minor errors but proofreaders at Copernicus will pick those up.