Dear Lenneke,

First of all, apologies for the delay in responding to this manuscript. I have now had the opportunity to consider the report on the revised version from the referee. I am pleased to say that the referee has only a few minor questions that should not take very long to address, so the manuscript is now very close to a version that we could publish in The Cryosphere. Please respond to the few outstanding questions raised by the referee in a revised version.

Many thanks,

Robert Arthern

Dear Lenneke,

I am very pleased to say that I am now happy to proceed with publication of your revised version of this manuscript in The Cryosphere. Congratulations on reaching this stage. It could become very important whether regrounding happens during retreat of West Antarctica and this is a very nice study that highlights a strong sensitivity of whether this occurs or not to the sliding relationship used. This will certainly prompt the wider modelling community to consider this important factor when producing forecasts of future sea level.

Yours sincerely,

Robert Arthern