Journal
ANNALS OF GLACIOLOGY
Volume 57, Issue 73, Pages 131-141Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/aog.2016.31
Keywords
ice shelves; ice/ocean interactions; melt - basal
Funding
- Australian Government's Cooperative Research Centre Programme through Antarctic Climate & Ecosystems Cooperative Research Centre
- Australian Research Council's Special Research Initiative for Antarctic Gateway Partnership [SR140300001]
- Australian Government CSIRO
- University of Tasmania
- National Computational Infrastructure [m68]
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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).
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