Simulation of the net snow accumulation along the Wilkes Land transect, Antarctica, with a regional climate model

Hubert Gallée (1) , Vincent Peyaud (1) , Ian Goodwin

1 LGGE - Laboratoire de glaciologie et géophysique de l'environnement

Regional climate modelling in conjunction with accumulation measurements collected on Antarctic traverses of the International Trans-Antarctic Scientific Expedition (ITASE) is presented as a tool for extending the spatial coverage of field measurements. The modelling of part of East Antarctica spanned the 7 year epoch 1980-86 where data covering the same period are available. The agreement between simulation and observation is improved when a parameterization of the snow surface redistribution processes, such as wind erosion, is included in the regional climate model. The modelled spatial distribution of the net snow mass transported in the boundary layer over coastal East Antarctica indicates that this mass is a significant component of the surface mass balance.

Domaines: Glaciologie

Hubert Gallée, Vincent Peyaud, Ian Goodwin. Simulation of the net snow accumulation along the Wilkes Land transect, Antarctica, with a regional climate model. Annals of Glaciology, 2005, 41 (1), pp.17 à 22. ⟨10.3189/172756405781813230⟩. ⟨insu-00374328⟩