Annals of Glaciology
We present simulation results from a version of the Regional Ocean Modeling System modified for ice shelf/ocean interaction, including the parameterisation of basal melting by molecular diffusion alone. Simulations investigate the differences in melting for an idealised ice shelf experiencing a range of cold to hot ocean cavity conditions. Both the pattern of melt and the location of maximum melt shift due to changes in the buoyancy-driven circulation, in a different way to previous studies. Tidal forcing increases both the circulation strength and melting, with the strongest impact on the cold cavity case. Our results highlight the importance of including a complete melt parameterisation and tidal forcing. In response to the 2.4 degrees C ocean warming initially applied to a cold cavity ice shelf, we find that melting will increase by about an order of magnitude (24 x with tides and 41 x without tides).
Original Publication Citation
Gwyther, D. E., Cougnon, E. A., Galton-Fenzi, B. K., Roberts, J. L., Hunter, J. R., & Dinniman, M. S. (2016). Modelling the response of ice shelf basal melting to different ocean cavity environmental regimes. Annals of Glaciology, 57(73), 131-141. doi:10.1017/aog.2016.31
Gwyther, David E.; Cougnon, Eva A.; Galton-Fenzi, Benjamin K.; Roberts, Jason L.; Hunter, John R.; and Dinniman, Michael S., "Modelling the Response of Ice Shelf Basal Melting to Different Ocean Cavity Environmental Regimes" (2016). CCPO Publications. 228.