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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