I thank the reviewers for their thorough comments and the authors for their detailed responses.

Both reviewers agreed that this work was important and appropriate for The Cryosphere. They nonetheless recommended major revisions that mainly consisted of better emphasizing the difference between this paper and the study by Hirano et al (2020), better explaining the mechanisms that explain the model sensitivities, and discussing the realism of the simulation with fast ice.

I'm glad to see that the authors have slightly reorganized their paper, added new explanations and performed new experiments to address the reviewers' concerns. As some of the comments are about important aspects, I would like to give an opportunity to the reviewers to check the revised paper.

Referee #1 and I agree that the paper has improved substantially and that is ready for publication. There are a few additional minor suggestions by Referee #1 that I would like the authors to consider.

I would like to thank the reviewers for their insightful recommendations and the authors for considering them carefully.