Remote control of Filchner-Ronne melt rates by the Antarctic Slope Current.
In this study, we use eddy-permitting NEMO regional ocean model simulations with ice-shelves, to study the influence of changes in water properties of the Antarctic Slope Front on melt rates in FISS. Using ApRES observations collected by the British Antarctic Survey, we evaluate the mean and variability of the model melt rates. Contrary to previous work, we find that remote changes in salinity (not temperature) influence the mean FISS melt rate. We detail the pathway of the perturbed salinity, via the Antarctic Slope Front and show that the response is rapid, and transient, with a recovery time-scale of 5-15 years dependent on the size of the perturbation. We discuss how these results are relevant for hindcast simulations and future projections of FISS.