Greenland Ice Sheet Contribution to 21st Century Sea Level Rise as Simulated by the Coupled CESM2.1-CISM2.1 | CU Experts

The Greenland Ice Sheet (GrIS) mass balance is examined with an Earth; system/ice sheet model that interactively couples the GrIS to the land; and atmosphere.; The simulation runs from 1850 to 2100, with historical and SSP5-8.5; forcing. By mid-21st century, the cumulative contribution to global mean; sea level rise (SLR) is 23 mm.; Over the second half of the 21st century, the surface mass balance; becomes negative in all drainage basins, and an additional 86 mm of SLR; is contributed.; The annual mean GrIS mass loss in the last two decades is 2.7 mm sea; level equivalent (SLE) yr-1. Strong decrease in SMB (3.1 mm SLE yr-1) is; counteracted by a reduction in ice discharge from thinning and retreat; of outlet glaciers.; The southern GrIS drainage basins contribute 73% of the mass loss by; mid-century. This decreases to 55% by 2100, as surface runoff in the; northern basins strongly increases.

Muntjewerf L; Petrini M; Vizcaino M; Silva CED; Sellevold R; Scherrenberg MDW; Thayer-Calder K; Bradley SL; Lenaerts JTM; Lipscomb WH

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