Identification of Antarctic ablation areas using a regional atmospheric climate model

作者: Michiel van den Broeke , Willem Jan van de Berg , Erik van Meijgaard , Carleen Reijmer

DOI: 10.1029/2006JD007127

关键词: Climate modelAblation zoneAtmospheric circulationIce shelfKatabatic windIce sheetGlacierClimatologySnow patchGeology

摘要: The occurrence of Antarctic ablation areas in Dronning Maud Land, the Lambert Glacier Basin, Victoria Transantarctic Mountains and Peninsula is realistically predicted by regional atmospheric climate model RACMO2/ANT, with snowdrift-related processes calculated offline. are characterized a low solid precipitation flux combination strong sublimation, snowdrift erosion and/or melt. interaction between circulation topography plays decisive role distribution hence that areas. Three types can be distinguished, all occurring dry regions: Type 1 erosion-driven area, caused 1-D 2-D divergence katabatic wind field at high elevations (2000–3200 m asl). 2 sublimation-driven area. This type occurs lower (

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