Impact of the melt–albedo feedback on the future evolution of the Greenland Ice Sheet with PISM-dEBM-simple

Surface melting of the Greenland Ice Sheet contributes a large amount to current and future sea level rise. Increased surface melt may lower the reflectivity of the ice sheet surface and thereby increase melt rates: the so-called melt-albedo feedback describes this self-sustaining increase in surfac...

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Veröffentlicht in:	The cryosphere 2021-12, Vol.15 (12), p.5739-5764
Hauptverfasser:	Zeitz, Maria, Reese, Ronja, Beckmann, Johanna, Krebs-Kanzow, Uta, Winkelmann, Ricarda
Format:	Artikel
Sprache:	eng
Schlagworte:	Ablation Albedo Albedo (solar) Analysis Approximation Climate Energy Energy balance Experiments Feedback Glaciation Greenland ice sheet Ice Ice sheet models Ice sheets Mass balance models Melting Precipitation Radiation Reflectance Sea level changes Sea level rise Sheet modelling Simulation Surface temperature Surface-ice melting Temperature Upper bounds
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Beschreibung
Zusammenfassung:	Surface melting of the Greenland Ice Sheet contributes a large amount to current and future sea level rise. Increased surface melt may lower the reflectivity of the ice sheet surface and thereby increase melt rates: the so-called melt-albedo feedback describes this self-sustaining increase in surface melting. In order to test the effect of the melt-albedo feedback in a prognostic ice sheet model, we implement dEBM-simple, a simplified version of the diurnal Energy Balance Model dEBM, in the Parallel Ice Sheet Model (PISM).
ISSN:	1994-0424 1994-0416 1994-0424 1994-0416
DOI:	10.5194/tc-15-5739-2021