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... is PISM?

Heard about PISM for the first time and want to know what exactly it is?

Read the overview


... to use PISM?

Using PISM yourself and forgot about a specific option or want to learn how to use it?

Read the manual


... to get PISM?

Want to start using PISM yourself or just want to have a peek into the code?

Get the code


The Parallel Ice Sheet Model (PISM) is an open-source modelling framework for ice sheets and glaciers. It is parallel, thermodynamically-coupled and capable of high resolution. PISM has been widely adopted as a tool for doing science for about twenty years now. The latest stable release is PISM v2.1.

PISM is jointly developed at the University of Alaska, Fairbanks (UAF) and the Potsdam Institute for Climate Impact Research (PIK). UAF developers are based in the Glaciers Group at the UAF Geophysical Institute. For more about the team see the developers team page.

Development of PISM is supported by NASA grants 20-CRYO2020-0052 and 80NSSC22K0274 and NSF grant OAC-2118285.

Projection of the Greenland Ice Sheet from 2008-2300 under RCP 8.5. Data from Aschwanden et al. (2019). Video by Cindy Starr (NASA SVS).


If you are looking for help with PISM, feel free to join the PISM workspace on Slack. You can also contact the developers team directly or write an e-mail to To fetch our latest news or get in touch with us, follow us on Twitter!

Latest news

MARUM Bremen: open postdoc in ice-sheet modeling

MARUM - Center for Marine Environmental Sciences at the University of Bremen is offering a position for one postdoctoral researcher in ice-sheet modeling, in the project “PalMod III-From the Last Interglacial to the Anthropocene”.

PISM 2.1 is out

We are pleased to announce the release of PISM v2.1.

Congrats to Constantine

Dear PISM users and developers