Institute for Marine and Atmospheric Research (IMAU)

Ice and Climate: Regional modelling

 

Data

Antarctica

Lenaerts et al., 2012

The first model runs with the polar version of RACMO were from Antarctica on 55 km grid resolution. Also the first runs with the Firn densification model (FDM) were from Antarctica, because modelling dry firn processes is less dificult than including wet firn processes such as melt water percolation and refreezing. Model runs are now avaiable for the recent past, pre-industrial time, and several future scenarios.


Greenland

Helsen et al., 2013

Soon after the first runs for Antarctica RACMO was adapted for use over regions where significant melt occurs, making runs over Greenland possible. Model runs are now avaiable for the recent past, pre-industrial time, and several future scenarios. Furthermore, a time slice experiment for the Eemian period is available.


Ice caps

With the increase of computer power the number of grid points and thus the horizontal resolution has improved. It now is possible to run RACMO and the Firnd densification model (FDM) over ice caps as well as the ice sheets. These runs are typically performed at 5.5 km grid resolution although resolutions up to 2.2 km are technically possible with RACMO. Since the FDM is basically a one dimensional model, horizontal resolution is irrelevant, the absolute number of grid points determines the feasibility of a FDM run for a given region.