PISM

The Parallel Ice Sheet Model is an open source, parallel, high-resolution ice sheet model.
https://github.com/pism/pism

Category: Cryosphere
Sub Category: Glacier and Ice Sheets

Keywords

c-plus-plus climate geophysics glacier ice-sheet mpi numerical parallel petsc python scientific-computing sea-level sphinx

Keywords from Contributors

climate-model

Last synced: about 17 hours ago
JSON representation

Repository metadata

Parallel Ice Sheet Model (PISM)

Host: GitHub
URL: https://github.com/pism/pism
Owner: pism
License: gpl-3.0
Created: 2011-11-04T19:03:37.000Z (about 14 years ago)
Default Branch: main
Last Pushed: 2025-12-11T23:57:57.000Z (14 days ago)
Last Synced: 2025-12-13T05:27:02.672Z (12 days ago)
Topics: c-plus-plus, climate, geophysics, glacier, ice-sheet, mpi, numerical, parallel, petsc, python, scientific-computing, sea-level, sphinx
Language: C++
Homepage: https://pism.io/
Size: 117 MB
Stars: 115
Watchers: 27
Forks: 51
Open Issues: 34
Releases: 19
Metadata Files:
- Readme: README.rst
- Changelog: CHANGES.rst
- Contributing: CONTRIBUTING.rst
- License: COPYING
- Code of conduct: CODE_OF_CONDUCT.md
- Citation: CITATION.cff
- Support: .github/SUPPORT.md

README.rst

          PISM, a Parallel Ice Sheet Model
================================
|doi| |gpl| |cipism| |fairchecklist|


.. image:: https://github.com/pism/pism/blob/dev/images/Greenland_RCP_85_2008_2300_comp_1080p30.gif


The Parallel Ice Sheet Model is an open source, parallel, high-resolution ice sheet model that includes:

- A hierarchy of available stress balances
- Marine ice sheet physics, dynamic calving fronts
- A polythermal, enthalpy-based conservation of energy scheme
- Extensible coupling to atmospheric and ocean models
- Verification and validation tools
- `Documentation `_ for users and developers
- Links to MPI_ and PETSc_ for parallel simulations
- Use of `CF-compliant `_  NetCDF_ files for input and output

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 `Snow, Ice, and Permafrost Group `_ at the `Geophysical Institute `_.

Please see PISM's manual https://www.pism.io/docs/citing for how to acknowledge the use of
PISM and PISM's funding sources. If the manual is not available, please refer to the file
``doc/sphinx/citing/index.rst`` in the PISM repository.

Homepage
--------

    http://www.pism.io/

Download and Install
--------------------

See the section `Installing PISM `_ on ``pism.io``.

Support
-------

Please e-mail `uaf-pism@alaska.edu `_ with questions about PISM.

You can also join the PISM workspace on `Slack `_.

Contributing
------------

Want to contribute? Great! See `Contributing to PISM `_.

.. URLs

.. |fairchecklist| image:: https://fairsoftwarechecklist.net/badge.svg
.. _fairchecklist: https://fairsoftwarechecklist.net/v0.2?f=31&a=32113&i=31311&r=123
.. |doi| image:: https://zenodo.org/badge/DOI/10.5281/zenodo.1199019.svg
.. _doi: https://doi.org/10.5281/zenodo.1199019
.. |gpl| image:: https://img.shields.io/badge/License-GPL-green.svg
.. _gpl: https://opensource.org/licenses/GPL-3.0
.. |cipism| image:: https://circleci.com/gh/pism/pism/tree/main.svg?style=svg
.. _cipism: https://circleci.com/gh/pism/pism/tree/main
.. _uaf: http://www.uaf.edu/
.. _pik: http://www.pik-potsdam.de/
.. _pism-manual: http://www.pism.io/docs
.. _pism-contributing: http://www.pism.io/docs/contributing
.. _pism-installation: http://www.pism.io/docs/installation
.. _mpi: http://www.mcs.anl.gov/research/projects/mpi/
.. _petsc: https://petsc.org/
.. _cf: http://cf-pcmdi.llnl.gov/
.. _netcdf: http://www.unidata.ucar.edu/software/netcdf/
.. _sip: https://www.gi.alaska.edu/research/snow-ice-and-permafrost
.. _gi: http://www.gi.alaska.edu
.. _Slack-PISM: https://uaf-pism.slack.com/join/shared_invite/enQtODc3Njc1ODg0ODM5LThmOTEyNjEwN2I3ZTU4YTc5OGFhNGMzOWQ1ZmUzMWUwZDAyMzRlMzBhZDg1NDY5MmQ1YWFjNDU4MDZiNTk3YmE
.. _uaf-pism: mailto:uaf-pism@alaska.edu

..
   Local Variables:
   fill-column: 90
   End:

Citation (CITATION.cff)

# -*- mode: yaml -*-
#
# Run
#
# git shortlog -sn --no-merges `branch`
#
# to list contributors to a `branch` and the number of non-merge commits they made.
#
# Output as of 2023-10-25 (branch=dev)
#
# 6981  Constantine Khrulev
# 1856  Ed Bueler
#  360  Andy Aschwanden
#  272  David Maxwell
#  126  Torsten Albrecht
#   86  Jed Brown
#   47  Maria Zeitz
#   30  Julien Seguinot
#   22  Elizabeth Fischer
#   18  Matthias Mengel
#   13  Maria Martin
#   13  Nathan Shemonski
#   10  Anders Damsgaard
#    4  Sebastian Hinck
#    2  Enrico Degregori
#    2  Florian Ziemen
#    2  Joseph H Kennedy
#    2  Ronja Reese
#    2  Thomas Kleiner
#    1  Johannes Feldmann
#    1  Ken Mankoff
#    1  Kyle Blum
#    1  Marijke Habermann
#    1  Simon Schöll
#
# Running it with branch=main also adds
#
#    1  Moritz Kreuzer
#    1  DeepSource Bot
#
# Total: 25, not counting the bot.
#
# Authors who are not listed above but are known to have made a contribution:
#
# Anders Levermann
# Craig Lingle
# Daniella DellaGiustina
# Julius Garbe
# Marianne Haseloff
# Regine Hock
# Ricarda Winkelmann
# Ward van Pelt
#
# Total: 7
#
# Overall total: 32
#
# To validate this document, install `cffconvert`
#
# python3 -m pip install cffconvert --user
#
# and run
#
# cffconvert --validate
#
# Note: the CITATION.cff format does not allow for extra information, so
# "contribution-areas" below are commented out. These lines *are* needed to generate the
# list of authors in the manual, though. Each author should have a list of contribution
# areas *one one line*, indented so that the substitution "s/# contrib/contrib/g" will
# produce a valid YAML document.
#
# See doc/sphinx/Makefile and doc/sphinx/authorship.py for details.

cff-version: 1.2.0
title: 'Parallel Ice Sheet Model (PISM)'
message: Please see PISM's manual https://www.pism.io/docs/citing for citation guidelines.

  If the manual is not available, please refer to the file doc/sphinx/citing/index.rst in
  the PISM repository.
type: software
doi: 10.5281/zenodo.1199019
contact:
  - email: uaf-pism@alaska.edu
    name: "PISM developers at UAF"
authors:
  - given-names: Constantine
    family-names: Khrulev
    email: ckhroulev@alaska.edu
    affiliation: University of Alaska Fairbanks
    orcid: 'https://orcid.org/0000-0003-2170-7454'
    # contribution-areas: primary source code author, software design, numerics, input/output, higher-order stress balance, mass conservation, verification, documentation, testing, user support, maintenance, ...
  - given-names: Andy
    family-names: Aschwanden
    email: aaschwanden@alaska.edu
    affiliation: University of Alaska Fairbanks
    orcid: 'https://orcid.org/0000-0001-8149-2315'
    # contribution-areas: project leader, thermodynamics, testing, user support, visualization, etc
  - given-names: Ed
    family-names: Bueler
    email: elbueler@alaska.edu
    affiliation: University of Alaska Fairbanks
    orcid: 'https://orcid.org/0000-0001-8232-4145'
    # contribution-areas: former project leader, verification, earth deformation, numerics, thermodynamics, documentation
  - given-names: Jed
    family-names: Brown
    affiliation: University of Colorado Boulder
    orcid: 'https://orcid.org/0000-0002-9945-0639'
    # contribution-areas: source code original author, SSA numerics, parallelism using PETSc, etc
  - given-names: David
    family-names: Maxwell
    email: damaxwell@alaska.edu
    affiliation: University of Alaska Fairbanks
    # contribution-areas: inverse methods, SSA finite element solver, Python bindings
  - given-names: Torsten
    family-names: Albrecht
    email: albrecht@pik-potsdam.de
    affiliation: Potsdam Institute for Climate Impact Research (PIK)
    orcid: 'https://orcid.org/0000-0001-7459-2860'
    # contribution-areas: ice shelf physics and numerics
  - given-names: Ronja
    family-names: Reese
    affiliation: University of Northumbria at Newcastle
    orcid: 'https://orcid.org/0000-0001-7625-040X'
    # contribution-areas: sub-shelf mass balance (PICO), ice shelf numerics, etc
  - given-names: Matthias
    family-names: Mengel
    affiliation: Potsdam Institute for Climate Impact Research (PIK)
    orcid: 'https://orcid.org/0000-0001-6724-9685'
    # contribution-areas: ice shelf physics (PICO)
  - given-names: Maria
    family-names: Martin
    affiliation: Potsdam Institute for Climate Impact Research (PIK)
    orcid: 'https://orcid.org/0000-0002-1443-0891'
    # contribution-areas: SeaRISE-Antarctica, Antarctic mean annual temperature parameterization, sub-shelf processes
  - given-names: Ricarda
    family-names: Winkelmann
    affiliation: Potsdam Institute for Climate Impact Research (PIK)
    orcid: 'https://orcid.org/0000-0003-1248-3217'
    # contribution-areas: sub-shelf mass balance (PICO), Antarctica processes, coupling, modeling, etc
  - given-names: Maria
    family-names: Zeitz
    affiliation: Potsdam Institute for Climate Impact Research (PIK)
    orcid: 'https://orcid.org/0000-0001-8129-1329'
    # contribution-areas: surface processes (dEBM-simple)
  - given-names: Anders
    family-names: Levermann
    affiliation: Potsdam Institute for Climate Impact Research (PIK)
    orcid: 'https://orcid.org/0000-0003-4432-4704'
    # contribution-areas: ice shelf dynamics theory, calving, etc
  - given-names: Johannes
    family-names: Feldmann
    orcid: 'https://orcid.org/0000-0003-4210-0221'
    affiliation: Potsdam Institute for Climate Impact Research (PIK)
    # contribution-areas: marine ice sheet processes, grounding line dynamics
  - given-names: Julius
    family-names: Garbe
    orcid: 'https://orcid.org/0000-0003-3140-3307'
    affiliation: Potsdam Institute for Climate Impact Research (PIK)
    # contribution-areas: surface mass and energy balance (dEBM-simple)
  - given-names: Marianne
    family-names: Haseloff
    affiliation: University of Wisconsin-Madison
    orcid: 'https://orcid.org/0000-0002-6576-5384'
    # contribution-areas: PISM-PIK development, SSA and SIA theory and numerics
  - given-names: Julien
    family-names: Seguinot
    affiliation: University of Bergen
    orcid: 'https://orcid.org/0000-0002-5315-0761'
    # contribution-areas: improvements to the temperature index (PDD) model
  - given-names: Sebastian
    family-names: Hinck
    affiliation: Deutsches Klimarechenzentrum GmbH
    orcid: 'https://orcid.org/0000-0002-6428-305X'
    # contribution-areas: improvements to the Lingle-Clark bed deformation model
  - given-names: Thomas
    family-names: Kleiner
    affiliation: Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research
    orcid: 'https://orcid.org/0000-0001-7825-5765'
    # contribution-areas: bug fixes in the enthalpy model
  - given-names: Elizabeth
    family-names: Fischer
    affiliation: University of Alaska Fairbanks
    orcid: 'https://orcid.org/0000-0002-3987-2696'
    # contribution-areas: bug fixes, coupling to a GCM
  - given-names: Anders
    family-names: Damsgaard
    affiliation: Aarhus University
    orcid: 'https://orcid.org/0000-0002-9284-1709'
    # contribution-areas: automatic testing
  - given-names: Craig
    family-names: Lingle
    affiliation: University of Alaska Fairbanks
    # contribution-areas: original SIA model, earth deformation
  - given-names: Ward
    family-names: van Pelt
    affiliation: Uppsala Universitet
    orcid: 'https://orcid.org/0000-0003-4839-7900'
    # contribution-areas: subglacial hydrology analysis and design
  - given-names: Florian
    family-names: Ziemen
    orcid: 'https://orcid.org/0000-0001-7095-5740'
    affiliation: Deutsches Klimarechenzentrum GmbH
    # contribution-areas: bug fix in the interpolation code
  - given-names: Nathan
    family-names: Shemonski
    affiliation: Zoox, Inc
    # contribution-areas: documentation, scripts and code related to the pre-v0.1 EISMINT Greenland setup
  - given-names: Kenneth
    family-names: Mankoff
    affiliation: Goddard Institute for Space Studies
    orcid: 'https://orcid.org/0000-0001-5453-2019'
    # contribution-areas: documentation
  - given-names: Joseph
    family-names: Kennedy
    affiliation: University of Alaska Fairbanks
    orcid: 'https://orcid.org/0000-0002-9348-693X'
    # contribution-areas: documentation
  - given-names: Kyle
    family-names: Blum
    affiliation: University of Alaska Fairbanks
    # contribution-areas: bug fix in the SeaRISE-Antarctica setup
  - given-names: Marijke
    family-names: Habermann
    affiliation: University of Alaska Fairbanks
    # contribution-areas: inverse modeling
  - given-names: Daniella
    family-names: DellaGiustina
    affiliation: University of Arizona
    orcid: 'https://orcid.org/0000-0002-5643-1956'
    # contribution-areas: regional modeling
  - given-names: Regine
    family-names: Hock
    affiliation: University of Oslo
    orcid: 'https://orcid.org/0000-0001-8336-9441'
    # contribution-areas: surface mass and energy balance
  - given-names: Moritz
    family-names: Kreuzer
    affiliation: Potsdam Institute for Climate Impact Research (PIK)
    orcid: 'https://orcid.org/0000-0002-8622-6638'
    # contribution-areas: Python 3.8+ compatibility
  - given-names: Enrico
    family-names: Degregori
    affiliation: Deutsches Klimarechenzentrum GmbH
    # contribution-areas: PICO optimization
  - given-names: Simon
    family-names: Schoell
    affiliation: Potsdam Institute for Climate Impact Research (PIK)
    # contribution-areas: calving bug fix

repository-code: 'https://github.com/pism/pism/'
url: 'https://www.pism.io'

abstract: The Parallel Ice Sheet Model (PISM) is an open-source modelling framework for
  ice sheets and glaciers. Its features include a hierarchy of available stress balances,
  marine ice sheet physics with dynamic calving fronts, an enthalpy-based conservation of
  energy scheme, bed deformation and subglacial hydrology components, extensible coupling
  to atmospheric and ocean models, and comprehensive user documentation. PISM uses
  distributed-memory (PETSc- and MPI-based) parallelism for high-resolution simulations.

  PISM is jointly developed at the University of Alaska, Fairbanks (UAF) and the Potsdam
  Institute for Climate Impact Research (PIK).

keywords:
  - ice sheet model
  - open source
  - geophysics
  - sea level
license: GPL-3.0-or-later

Owner metadata

Name: Parallel Ice Sheet Model
Login: pism
Email: uaf-pism@alaska.edu
Kind: organization
Description: An open source, parallel, high-resolution ice sheet model
Website: https://www.pism.io/
Location: University of Alaska Fairbanks
Twitter: PISM_model
Company:
Icon url: https://avatars.githubusercontent.com/u/1057072?v=4
Repositories: 43
Last ynced at: 2024-04-23T11:44:52.232Z
Profile URL: https://github.com/pism

GitHub Events

Total

Create event: 24
Commit comment event: 8
Issues event: 8
Release event: 3
Watch event: 14
Delete event: 7
Issue comment event: 16
Push event: 102
Pull request review event: 2
Pull request review comment event: 2
Pull request event: 6
Fork event: 12

Last Year

Create event: 22
Commit comment event: 6
Release event: 2
Issues event: 7
Watch event: 10
Delete event: 5
Issue comment event: 15
Push event: 83
Pull request event: 4
Fork event: 9

Committers metadata

Last synced: 11 days ago

Total Commits: 10,740
Total Committers: 27
Avg Commits per committer: 397.778
Development Distribution Score (DDS): 0.27

Commits in past year: 75
Committers in past year: 2
Avg Commits per committer in past year: 37.5
Development Distribution Score (DDS) in past year: 0.027

Name	Email	Commits
Constantine Khrulev	c**v@a**u	7840
Ed Bueler	e**r@a**u	1859
Andy Aschwanden	a**n@a**u	374
David Maxwell	d**l@a**u	272
Torsten Albrecht	a**t@p**e	128
Jed Brown	j**d@j**g	86
Maria Zeitz	z**z@p**e	47
Julien Seguinot	j**t@n**e	30
Elizabeth Fischer	e**r@c**u	23
Matthias Mengel	m**l@p**e	18
Maria Martin	m**n@p**e	13
Nathan Shemonski	h**p@p**g	13
Anders Damsgaard	a**s@a**k	10
Ken Mankoff	k**f@n**v	4
Sebastian Hinck	s**k@a**e	4
Joseph H Kennedy	k**h@o**v	3
Florian Ziemen	f**n@p**e	2
Kyle Blum	k**2@a**u	2
Ronja Reese	r**e@p**e	2
Thomas Kleiner	t**r@a**e	2
Enrico Degregori	d**i@d**e	2
Simon Schöll	1****l	1
Johannes Feldmann	j**d@l**)	1
Marijke Habermann	h**e@p**g	1
Rene Gassmoeller	r**r@m**g	1
Moritz Kreuzer	k**r@p**e	1
DeepSource Bot	b**t@d**o	1

Committer domains:

Issue and Pull Request metadata

Last synced: 2 months ago

Total issues: 479
Total pull requests: 70
Average time to close issues: about 1 year
Average time to close pull requests: 4 months
Total issue authors: 37
Total pull request authors: 18
Average comments per issue: 2.55
Average comments per pull request: 1.63
Merged pull request: 40
Bot issues: 0
Bot pull requests: 0

Past year issues: 5
Past year pull requests: 7
Past year average time to close issues: 26 days
Past year average time to close pull requests: about 1 month
Past year issue authors: 4
Past year pull request authors: 4
Past year average comments per issue: 2.0
Past year average comments per pull request: 0.86
Past year merged pull request: 2
Past year bot issues: 0
Past year bot pull requests: 0

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/pism/pism

Top Issue Authors

ckhroulev (169)
bueler (82)
citibeth (56)
aaschwanden (54)
juseg (25)
talbrecht (19)
tkleiner (13)
matthiasmengel (9)
sebhinck (6)
jacksd233 (6)
mankoff (3)
rersnow (3)
zyastc213 (3)
llstbg (3)
mhuetten (3)

Top Pull Request Authors

ckhroulev (20)
talbrecht (17)
citibeth (6)
mankoff (3)
bueler (3)
ghost (3)
sebhinck (3)
luraess (2)
jhkennedy (2)
ronjareese (2)
gassmoeller (2)
pgierz (1)
sschoell (1)
jedbrown (1)
EnricoDeg (1)

Top Issue Labels

task (176)
bug (81)
feature_request (58)
design_question (19)
forum (15)
documentation_issue (6)
urgent (4)

Top Pull Request Labels

documentation_issue (2)

Package metadata

Total packages: 1
Total downloads: unknown
Total dependent packages: 0
Total dependent repositories: 0
Total versions: 47

proxy.golang.org: github.com/pism/pism

Homepage:
Documentation: https://pkg.go.dev/github.com/pism/pism#section-documentation
Licenses: gpl-3.0
Latest release: v2.2.2+incompatible (published 9 months ago)
Last Synced: 2025-11-30T21:05:00.589Z (25 days ago)
Versions: 47
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
- Dependent packages count: 5.395%
- Average: 5.576%
- Dependent repos count: 5.758%

Dependencies

docker/archlinux/Dockerfile docker

archlinux/base latest build

docker/debian-spack/Dockerfile docker

debian buster build

Score: -Infinity

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