Satellite-derived melt assimilation MAR simulations over the Antarctic Peninsula daily data

The Modèle Atmosphérique Régionale (MAR), is a regional climate model designed to simulate poles' climate. here is provided a data set of MAR simulations in which microwave sensor date have been assimilated. The files contain snow and athmosphere related variables over the Antarctic Peninsula for the 2019-2020 period.

MAR is a polar-oriented regional climate model mostly used to study both the Greenland  and Antarctic ice sheet. Its atmospheric dynamics are based on hydrostatic approximation of primitive equations originally described in Gallée and Schayes (1994) and on a radiative transfer scheme adapted from Morcrette (2002). The model has been parameterized to resolve the topmost 20 meters of the snowpack, divided into 30 layers of time varying thickness.  Layers maximum water content holding capacity is fixed at 5%. Beyond it, the water freely percolates through the snowpack or runoffs above impermeable layers.

For this work, MARv3.12  was run at a 7.5 km resolution over the Antarctic Peninsula March 2017 and May 2021. Snowpack was initialized in 2017 with a previous MAR simulation (Kittel et al., 2021). Finally, the simulations with assimilation were started in January 2019, restarting from the simulation without assimilation. 

Simulation for the 2020-2021 season are available on demand. Contact tdethinne@uliege.be