Dear Drs. Kazmierczak, Gregov et al.

Thanks for your thorough responses to the revisions suggested by the referees. While the referees are all generally positive and excited about your study and they express similar comments, particularly with respect to the model exposition, because of the breadth and depth of their comments, I expect to send your MS out for review again. Because of summer holidays, this second review may take a bit longer than usual.

Joe MacGregor

Dear Drs Kazmierczak, Gregov et al.,

Thanks for submitting your thoroughly revised MS, which I will now send out for a second review.

Joe MacGregor

Dear Drs Kazmierczak, Gregov et al.,

Thanks for submitting your thoroughly revised MS, which I will now send out for a second review.

Joe MacGregor

Dear Drs. Kazmierczak, Gregov et al.,

Following this second round of reviews, all three referees agreed to review your MS again and are uniformly positive about its revised state. The 2nd and 3rd referee suggested several minor points of clarification regarding the assumptions made in the subglacial hydrologic model. Pending a satisfactory response to their reports, I expect to accept your original and timely MS for publication in TC. I have no further comments of my own.

Regards,

Joe MacGregor

Dear Drs. Kazmierczak, Gregov et al.,

Thanks for your thorough revisions in response to the second round of reviewer comments. I've evaluated both your response and the revised MS, and am happy to accept it for publication in The Cryosphere. Congratulations, and thanks again for considering this journal for your work.

Regards,

Joe MacGregor