Dear authors,
Two referees evaluated your manuscript (MS), and I would like to thank both of them for their thoughtful and timely comments. You provided detailed responses and suggestions of how to address the referee’ comments in a revised MS.
Based on these responses, I would like to ask you to upload a revised MS taking into account referees and editorial comments. A track-changed version would help me and the referees to assess the modifications.
Best wishes,
Etienne Berthier

Dear authors,

Your revised manuscript and your responses have been evaluated by one of the two initial referees. This referee found that you addressed satisfactorily all major issues, but indicated that the writing still needed to be tightened up.

You will find the reviewer comment below or attached. He/she notes that this list is far from exhaustive so I ask all co-authors to work hard on the text to make the best contribution to our journal.

I have two small comments myself regarding the figures (see below).

Best regards,

Etienne Berthier

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Figure 3. Clarify in the legend what are the red lines.

Figure 6: improve readability as much as possible, font size is rather small for panels c-f.
Also you write in the legend "the portion highlighted in green": rather the x-x' part of the profile.

Dear Authors,

I have now read your revised manuscript (MS) and yours responses to the second round of review. You addressed satisfyingly all comments.

I have a few (really) minor editorial comments before the MS can be published (see below). Thanks for considering them before uploading the final files for copy-editing.

Do not hesitate to contact me if you have some further questions.

Thanks a lot for choosing TC to publish your work.

Best regards,

Etienne Berthier

L2. Should not “the” be replaced by "been"?

Figure 1. Ideally write "BedMachine" above the color scale. (“M” instead of “m”)

Figure 2. Spell out "Bed Reflection Power" for clarity (in the figure or its legend)

Figure 3. Are cap letters needed for Bed Digital Elevation Model?

Figure 4. Cap letters needed for Digital Elevation Models?

Figure 10. "Ice Surface velocity (m yr-1) : the lower part of the text is partially cut. (increase size of the text box)

Data availability. Can the authors clarify the availability of the new bed elevation model map also?