The Parallel Ice Sheet Model pism0.7 is an open source, parallel, high-resolution ice sheet model. Features:
|Simulating the Antarctic ice sheet in the late-Pliocene warm period: PLISMIP-ANT, an ice-sheet model intercomparison project|
|investigator:||B. de Boer and others|
Understanding the behaviour of ice sheets during warm intervals in Earth history is of fundamental importance for understanding future climate change. The late Pliocene warm period (3.264–3.025 Ma BP) serves as an analogue for future climates. Although Pliocene ice locations and extents are still poorly constrained, a significant contribution to sea-level rise is expected from the Antarctic ice sheets based on sea-level reconstructions. All six included ice-sheet models in this paper, including PISM v0.6, used the shallow ice and shelf approximations for the complete Antarctic domain, including grounded and floating ice, for both modern control and Pliocene ice sheet runs, in five sensitivity experiments. The models simulate a comparable present-day ice sheet, considering the models use their own parameter settings. For the Pliocene, all six models have difficulty simulating significant retreat or re-advance of the East Antarctic ice grounding line, which is thought to have happened for the Wilkes and Aurora basins. The specific sea-level contribution of the Antarctic ice sheet at this point cannot be conclusively determined. Improved grounding line physics is apparently needed.
PISM v0.7.1 was released 30 June 2015. In addition to bug fixes this version adds support for PETSc 3.6.1, which was released 22 July 2015.
PETSc 3.6.0 is not supported due to a bug in PETSc. Please use PETSc 3.5.4 or >= 3.6.1 with PISM.
It's summer time! UAF PISM developers are currently writing proposals, working on their own projects, and enjoying the summer. Please give us some slack responding to questions, bug reports, etc. We will try to fix serious bugs as quickly as possible . We'll be back at full strength in the Fall.
PETSc 3.6 was released on June 9, 2016. We are currently working on making PISM compatible with PETSc 3.6 and will announce it here as soon as possible.
In the meantime, please install petsc 3.5.4 from here. PISM version 0.7 (
stable0.7 branch) works with any PETSc 3.5.X.
PISM is jointly developed at the University of Alaska, Fairbanks (UAF) and the Potsdam Institute for Climate Impact Research (PIK). For more about the team see the UAF Developers and PIK Developers pages.
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.