[en] The Greenland Ice Sheet (GrIS) mass loss is currently the largest single contributor to global
sea level rise. Supraglacial lakes (SGLs) consist of meltwater accumulation in topographic
depression. Those are increasingly widespread across the GrIS surface and are not yet
represented in regional climate models (RCMs), including MAR. We explore the sensitivity of
the GrIS Surface Mass Balance (SMB) to SGLs parametrizations (evaporation, refreezing and
albedo) in MAR. We show that SGLs can impact the SMB locally while the effect remains
currently limited on the whole GrIS SMB. Finally, we discuss ongoing model developments
enabling a physical representation of SGLs in MAR.
Noël, Brice ; Université de Liège - ULiège > Département de géographie > Climatologie et Topoclimatologie
Kittel, Christoph ; Université de Liège - ULiège > Département de géographie > Climatologie et Topoclimatologie ; Physical Geography research group, Department of Geography, Vrije Universiteit Brussel, Brussels, Belgium
Amory, Charles ; Université de Liège - ULiège > Département de géographie > Climatologie et Topoclimatologie ; Univ. Grenoble Alpes/CNRS/IRD/G-INP/INRAE, Institut des Geosciences de l’Environnement, Grenoble, France
Language :
English
Title :
Greenland Ice Sheet Surface Mass Balance Sensitivity to Supraglacial Lakes Parametrization in the Regional Climate Model MAR
