Documentation for PISM, a parallel Ice Sheet Model

NEWS: PISM stable0.6 release available

The Parallel Ice Sheet Model pism0.6 is an open source, parallel, high-resolution ice sheet model. Features:

  • hierarchy of available stress balances
  • marine ice sheet physics, dynamic calving fronts
  • polythermal, enthalpy-based conservation of energy scheme
  • subglacial hydrology and till model
  • extensible coupling to atmospheric and ocean models
  • inversion toolbox in Python
  • verification and validation tools
  • complete documentation for users and developers
  • uses MPI and PETSc for parallel simulations
  • reads and writes CF-compliant NetCDF

PISM Application of the Month

January 2014

Click the image to go to the GRL page.

An open ocean region in Neoproterozoic glaciations would have to be narrow to allow equatorial ice sheets
investigators: C. Rodehacke, A. Voigt, F. Ziemen, D. Abbot
journal: Geophysical Research Letters

A major goal of understanding Neoproterozoic glaciations and determining their effect on the evolution of life and Earth's atmosphere is establishing whether and how much open ocean there was during them. Geological evidence tells us that continental ice sheets had to flow into the ocean near the equator during these glaciations. Here we drive the PISM ice sheet model with output from four simulations of the ECHAM5/MPI-OM atmosphere-ocean general circulation model with successively narrower open ocean regions. We find that extensive equatorial ice sheets form on marine margins if sea ice extends to within about 20 degrees latitude of the equator or less (Jormungand-like and hard Snowball states), but do not form if there is more open ocean than this. Given uncertainty in topographical reconstruction and ice sheet ablation parameterizations, we perform extensive sensitivity tests to confirm the robustness of our main conclusions.

2013/12/31 08:11 · Ed Bueler

Latest News

2012 was a good year for authors using PISM

In 2012 ten papers were published by scientists using PISM. The articles appeared in these journals:

  • Nature
  • Proceedings of the National Academy of Sciences
  • Geophysical Research Letters
  • Quaternary Science Reviews
  • Climate Dynamics
  • The Cryosphere (2 papers)
  • Journal of Glaciology (3 papers)

For details see the PISM Publications tab.

2013/01/12 22:47 · Ed Bueler

PISM team

PISM is jointly developed at the University of Alaska, Fairbanks (UAF) and the Potsdam Institute for Climate Impact Research (PIK). UAF developers, who are in the Glaciers Group at the GI, are supported by NASA's Modeling, Analysis, and Prediction and Cryospheric Sciences Programs (grants NAG5-11371, NNX09AJ38C, NNX13AM16G, NNX13AK27G) and by the Arctic Region Supercomputing Center.

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