NEWS: Summer time!
The Parallel Ice Sheet Model pism0.7 is an open source, parallel, high-resolution ice sheet model. Features:
|Interaction of marine ice-sheet instabilities in two drainage basins: simple scaling of geometry and transition time|
|investigators:||J. Feldmann and A. Levermann|
The marine ice-sheet instability generally comes from the ocean side of the ice sheet. Using a flow-line geometry in PISM, this paper investigates whether instability can be triggered from the direction of the ice divide. The authors find that the instability in one basin can induce a destabilization in the other. The underlying mechanism is dynamic thinning and consequent motion of the ice divide. They conclude that for the three-dimensional case, the possibility of drainage basin interaction on timescales on the order of 1 kyr or larger cannot be excluded and needs further investigation.
This release has substantial changes to the code base, but users will not see large differences. The goal of most code changes is to improve maintainability, and our speed in fixing bugs and adding features, so we ask users to update from v0.6 unless they have a good reason against it.
If you already have a git repo for pism then upgrade by doing
git fetch origin git checkout stable0.7
in the PISM source tree. (Or get a new tagged
.zip at github.com/pism/pism/releases.) Then do
in the build directory.
The install directions in
INSTALL.md, included in the source release, should help with installation errors, but there is also an Installation Manual. Feel free to email firstname.lastname@example.org with installation questions; please include the failed commands and the error message(s).
Lists below give user-visible changes. For a full list of changes since v0.6, please see CHANGES.md in the source release.
Please send email to email@example.com for help with any version of PISM.
At the AGU Fall Meeting 2014, PISM simulations and results were featured in a number of posters and oral presentations.
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.