Evaluating incoming radiation modelled by MAR over Greenland and Antarctica

Laboratoire(s) de rattachement : IGE

Encadrant : Vincent Favier

Co-encadrant : Charles Amory

Niveau de formation & pré-requis : Required qualifications :
- Being enrolled in a Master degree in climatology, Earth science or related field (mathematics, physics, informatics) with strong interest in Earth science ;
- Computational programming skills
- A previous experience with snow, atmosphere or climate models is an asset ;
- Verbal and written communication skills in English ;
- Interest in working in a multidisciplinary team environment.

Mots-clés : Regional circulation model, albedo, surface energy balance

Accurate representation of the surface energy balance (SEB) is needed for modeling the surface mass balance of polar ice sheets, as it determines the amount of energy available for melting and sublimation of the ice/snow surface. This is of particular importance in ice sheet regions where surface melt is an active mass-loss process, and where albedo changes are involved in important
feedbacks with melting and wind (katabatic, foehn) regimes, such as the ablation zone of Greenland, the Antarctic Peninsula or Antarctic ice shelves. Quantifying surface melt in climate models requires estimations of all components of the SEB, which includes notably shortwave and longwave radiation computed using physically-based radiative schemes. The model ability for simulating surface temperature and/or melt occurrence, intensity, duration and extent can vary spatially depending notably on the performance of the radiative scheme. Using ground-based observations of atmospheric radiation, this internship aims at evaluating the incoming radiative fluxes simulated by the latest version of the regional climate model MAR over the Greenland and
Antarctic ice sheets.

Pour candidater : Adresser un CV et une lettre de motivation par email à l’adresse ci-dessous :
vincent.favier univ-grenoble-alpes.fr