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Elmer/Ice Developer’s committee (DevComm)
The Elmer/Ice Developer’s committee (DevComm) was created in June 2022.
It is composed by Josefin Ahlkrona (Stockholm Univ., Swedish), Samuel Cook (UNIL, Switzerland), Peter Raback (CSC, Finland), Olivier Gagliardini (IGE, France), Fabien Gillet-Chaulet (IGE, France), Rupert Gladstone (Arctic Centre, University of Lapland, Finland), Thomas Zwinger (CSC, Finland).
The minutes of the DevComm meeting can be found on the Elmer/Ice wiki.
The responsibilities of the DevComm are:
- Members of DevComm should meet once or twice yearly, physically or virtually, to co-ordinate developments
- The user representative is responsible for collecting user feedback at user committee meetings and reporting it to DevComm meetings
- Meetings should seek to coordinate developments across the entire Elmer/Ice community, and to take into account user feedback when prioritising development efforts (note: DevComm is not required to follow user feedback, but should ensure it is considered as one element in the planning process)
- After DevComm meetings, a summary should be circulated to all attendees and committee members
- All DevComm members are responsible for reviewing pull requests made to the main Elmer/Ice GitHub repository to ensure they meet coding standards (clear, indented code; useful comments; etc.) and do not conflict with existing model functionality – one DevComm member should be assigned to each new pull request to ensure this
- In addition, DevComm members are responsible for ensuring their own developments meet model best practice (note: DevComm members cannot review their own pull requests)
This list is certainly not exhaustive and might evolve in the future.
CSC – IT Center for Science Ltd. – Thomas Zwinger, Peter Råback, Juha Ruokolainen, Mika Malinen and Elmer developers
The main library behind Elmer/Ice is Elmer, an open source FEM multi-physics package consisting of about 300000 lines of code. Elmer is owned by CSC and continuously developed, which benefits also the capabilities of Elmer/Ice. At CSC, Thomas Zwinger is responsible for building and coordinating the Elmer/Ice activities and to communicate with the glaciological community, which is the most active one. He has been working in the development of Elmer since 2001.
IGE* – Olivier Gagliardini, Fabien Gillet-Chaulet, Gaël Durand and Elmer/Ice developers at IGE
Olivier Gagliardini started working with Elmer in 2003 by implementing the anisotropic law within Elmer. He spent one year in 2005/06 at CSC, which can be seen as the birth of Elmer/Ice. Since that time, the Elmer/Ice group at IGE has grown by the recruitment of Gaël Durand (grounding line dynamics), Fabien Gillet-Chaulet (anisotropy, inverse methods, unstructured mesh), Vincent Peyaud (mountain glaciers) and Nicolas Jourdain (coupling with atmosphere and ocean). The team is completed by PhD students and Postdocs working on various subject: Lionel Favier (ice2sea postdoctorant 2009-2012) has developed the 3D grounding line model, Basile de Fleurian (PhD student, 2007-2010) has developped a basal hydrology model, Ma Ying (Posdoctorant, 2009/2010) has applied the anisotropic model for the transition zone, Cyrille Mosbeux (PhD student, 2013-2016) has developped inverse methods to get simultaneously the bed elevation and the friction, Julien Brondex (PhD student, 2014-2017) is working on the sensitivity of grounding line dynamics to damage and form of the friction law, and Olivier Passalacqua (PhD student, 2014-2017) is applying the anisotropic ice flow model in the vicinity of Dome C (Antarctica) to locate places with oldest ice.
* note : the 1st january 2017, LGGE and LTHE in Grenoble have merged into the Institut des Géosciences de l'Environnement (IGE)
ILTS – Hakime Seddik and Ralf Greve
Hakime Seddik used Elmer/Ice for his PhD thesis (2005-2008, supervised by Ralf Greve) on modelling the vicinity of Dome Fuji, Antarctica, including flow-induced ice anisotropy. More recent and still ongoing work is on applications to the entire Greenland ice sheet within the SeaRISE (Sea-level Response to Ice Sheet Evolution) community effort, and to the Shirase drainage basin that connects Dome Fuji Station to the Lützow-Holm Bay region of Queen Maud Land in Antarctica.
AC/UoL - Rupert Gladstone
Rupert Gladstone works on coupled ice sheet - ocean modelling using Elmer/Ice and the "Regional Ocean Modelling System" (ROMS). He is also funded by the Finnish Academy to work on whole Antarctic simulations using Elmer/Ice. Rupert collaborates with John Moore's group at Beijing Normal University and Ben Galton-Fenzi's group at ACE-CRC in Hobart, Tasmania, on various related projects.
BAS/NERC - Carlos Martin
Carlos Martin is an ice sheet/stream numerical modeller at the British Antarctic Survey (UK). He has been using Elmer/Ice together with Hilmar Gudmundsson to model stratigraphy and age-depth at ice divides, and with Gaëtan Pulfer and Richard Hindmarsh modelling subglacial melting and freezing.
TDB/INK - Josefin Ahlkrona (now Univ. Kiel), Eef van Dongen, Cheng Gong
At the Department of Information Technolgy/Division Scientific Computing of Uppsala University Josefin Ahlkrona (supervised by Per Lötstedt and Nina Kirchner) used Elmer/Ice to examine the validity of the theory behind the Shallow Ice Approximation (SIA) and Second Order Shallow Ice Approximation (SOSIA). Josefin implemented the ISCAL method that combines SIA and Full Stokes in a single solver. This work is continued by Eef van Dongen, who aims to include SSA into ISCAL. Cheng Gong is working on special predictor-corrector timestepping schemes.
University of Calgary - Surendra Adhikari
In his PhD research (2007-2012, supervised by Shawn J. Marshall), Surendra Adhikari used Elmer/Ice to simulate the dynamics of valley glaciers. Attention has been given to parameterize the effects of high-order mechanics in simplified models (both dynamical and statistical models). Adhikari's PhD thesis (title: Advances in Modelling of Valley Glaciers).
University of Tasmania – Lenneke Jong, Chen Zhao, Rupert Gladstone, Sue Cook, Adam Treverrow and Elizabeth Russell
The ice sheets group at University of Tasmania use Elmer/Ice among a number of other ice sheet models. Lenneke Jong, in collaboration with Rupert Gladstone at AC/UoL, is working on grounding line dynamics and marine ice sheet instability by coupling Elmer/Ice with the ROMS ocean model, and will also be working on solid earth modelling for coupling GIA into ice sheet models. PhD student Chen Zhao has been working on Elmer/Ice under the supervision of Rupert Gladstone. She is using Elmer/Ice for her PhD project on simulating the Wordie Ice Shelf - Fleming Glacier system in the western Antarctic Peninsula in a parallel way. She is now working on the sensitivity test of the grounded ice to the ice shelf retreat with the basal drag coefficient extracted from the control inversion method. Sue Cook, Adam Treverrow, Lenneke Jong and Elizabeth Russell have been working on using Elmer/Ice to simulate deformation studies in the university’s ice mechanics laboratory.
St. Andrews University – Joe Todd, Doug Benn
Joe and Doug are working on continuum calving model implementation in Elmer/Ice. They intensively use the possibility to exchange geometries between Elmer/Ice and the Helsinki Discrete Element Model (HiDEM - by Jan Åström, CSC) to compare continuum flow model parameters to fracture mechanical behaviour.
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