Philippe Huybrechts
The experiments aim at comparing steady state behaviour (with/ without a prescribed grounding line), and at comparing model behaviour during the glacial cycles and under enhanced greenhouse warming conditions. Compared to the other intercomparison tests (grounding-lines, ice shelves and Greenland), the important new feature is the evaluation of treatments for grounding-line migration in two horizontal dimensions.
The experiments first of all concern 3D time-dependent thermomechanical models with a coupled ice shelf, but part of the experiments can also be performed by models without thermomechanical coupling (vertically integrated models) or by models that only consider grounded ice-sheet flow.
The experimental description document is available as antarctica-descr.pdf.
The experiments require a number of data files. These are:
bed40eis.dat: bedrock elevation on 40 km grid
sur40eis.dat: surface elevation on 40 km grid
thi40eis.dat: ice thickness on 40 km grid
mask40eis.dat: mask on 40 km grid (1 = grounded ice; 0 = everything else)
forcanteis.dat: forcing data over last two glacial cycles (220 ky BP -
present).
first column = year; second column = SPECMAP sea-level; third column = Vostok
temperature
change.
Please contact me if there are any problems with obtaining these documents.
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