ce sheets in the Community Earth System Model Objective Implement and evaluate the Glimmer Community Ice Sheet Model GlimmerCISM in the Community Earth System Model CESM as a first step ID: 296118
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Dynamic i
ce sheets in the Community Earth System Model
ObjectiveImplement and evaluate the Glimmer Community Ice Sheet Model (Glimmer-CISM) in the Community Earth System Model (CESM) as a first step toward fully coupled ice-sheet/climate modeling.
ResearchImplemented Glimmer-CISM in CESMIce sheet surface mass balance (SMB) computed in Community Land ModelSMB downscaled to Greenland grid, applied to dynamic ice sheet modelRan Greenland Ice Sheet to equilibrium in an ensemble of 100 parameter setsChose optimal parameter sets and ran model from 1850-2100 to estimate Greenland contribution to sea-level rise
ImpactFirst use of a global climate model to generate a realistic surface mass balance for forcing a dynamic ice sheet modelFound that reduced ice discharge partly offsets increased meltingIdentified positive SMB bias along northern Greenland coast
Reference: Lipscomb, W.H., J. G. Fyke, M. Vizcaíno, W. J. Sacks, J. Wolfe, M. Vertenstein, T. Craig, E. Kluzek, and D. M. Lawrence (2013), Implementation and initial evaluation of the Glimmer Community Ice Sheet Model in the Community Earth System Model, J. Climate, doi:10.1175/JCLI-D-12-00557.1.
Greenland ice sheet topography: (left) simulated in CESM by optimal ensemble member; (right) observed.