Greenland ice sheet
Magnitude, irreversibility, low adaptive capacity, confidence
Localised deglaciation (already observed due to local warming), extent would increase with temperature *** e
Commitment to widespread ** or near-total * deglaciation, 2-7 m sea-level rise19 over centuries to millennia * e
Near-total deglaciation ** e
Meridional Overturning Circulation
Magnitude, persistence, distribution, timing, adaptive capacity, confidence
Variations including regional weakening (already observed but no trend identified) f
Considerable weakening **. Commitment to large-scale and persistent change including possible cooling in northern high-latitude areas near Greenland and north-west Europe •, highly dependent on rate of climate change.
Risks from extreme events
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