Dr. C.J. (Tijn) Berends

Buys Ballotgebouw
Princetonplein 5
3584 CC Utrecht

Dr. C.J. (Tijn) Berends

Researcher
Dynamics Meteorology
c.j.berends@uu.nl

I currently maintain and develop two different ice-sheet models, IMAU-ICE and UFEMISM, both of which can be found on Github: https://github.com/IMAU-paleo/

 

https://doi.org/10.5194/gmd-15-5667-2022

IMAU-ICE is IMAU's in-house ice-sheet model, which has been continuously used and developed here since the early 2000's. It is a classic square-grid ice-sheet model, using (since 2021) the DIVA stress balance approximation to describe ice flow. IMAU-ICE comes equipped with a wide range of bells and whistles aimed at both palaeo-applications and future projections. It is written in Fortran90, uses only a handful of very common external modules (OpenMPI, NetCDF, PETSc, and Lapack), and includes a collection of makefiles, compile scripts, run scripts, and config files so that new users can use it pretty much out-of-the-box.

 

https://doi.org/10.5194/gmd-14-2443-2021

The Utrecht FinitE voluMe Ice-Sheet Model (UFEMISM) is a novel ice-sheet model I invented and developed myself from early 2020. While it describes the same physics as IMAU-ICE, it uses a dynamic adaptive grid, which allows it to achieve a very high resolution (down to 1 km) near the grounding line, and a low resolution everywhere else, so as to keep the computational load to a minimum.

In late 2021 I gave a short tutorial for new UFEMISM users, which is available online: https://youtu.be/CB9Mg9hb9qs
However, aspiring users should be aware that this model is still in development, and that while it has a good record so far, there are definitely still some issues that need to be sorted out, and that therefore we cannot guarantee that it will work out-of-the-box for every conceivable kind of application.