An open source glacier model in Python

Extending Marzeion et al., (2012), the model accounts for glacier geometry (including contributory branches) and includes an explicit ice dynamics module. It can simulate past and future mass-balance, volume and geometry of (almost) any glacier in the world in a fully automated workflow. We rely exclusively on publicly available data for calibration and validation.

This is the model’s documentation for users and developers as of version 1.0. For the documentation of the latest (cutting-edge) repository version, visit oggm.readthedocs.io/en/latest.

For more information about the OGGM project and for the latest news, visit oggm.org.

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License and citation


OGGM is available under the open source GNU GPLv3 license.

OGGM is free software. This implies that you are free to use the model and copy or modify its code at your wish, under certain conditions:

  1. When using this software, please acknowledge the original authors of this contribution. Currently, we recommend to use the Zenodo citation for this purpose.

    An example BibTeX entry:

      author       = {Fabien Maussion and
                      Timo Rothenpieler and
                      Ben Marzeion and
                      Johannes Landmann and
                      Felix Oesterle and
                      Alexander Jarosch and
                      Beatriz Recinos and
                      Anouk Vlug},
      title        = {OGGM/oggm: v0.1.1},
      month        = feb,
      year         = 2017,
      doi          = {10.5281/zenodo.292630},
      url          = {https://doi.org/10.5281/zenodo.292630}
  2. Your modifications to the code belong to you, but if you decide to share these modifications with others you’ll have to do so under the same license as OGGM (the GNU General Public License as published by the Free Software Foundation).

See the wikipedia page about GPL and the OGGM license for more information.


Status:Experimental - in development
License:GNU GPLv3
Authors:See the Version history for a list of all contributors.