First online Elmer/Ice beginner's course

The first online Elmer/Ice beginner's course was taking place from November 23 to 27, ElmerIceCourse2020 Zoomwith a self-study preparation week based on instruction videos from 16. to 20. November. In total there were about 40 people from all over the world enrolled in this course, which was free of charge and supported by IGE, Grenoble and CSC in Espoo. The wide spread of timezones of the participants implied that every Zoom online session from the morning was repeated in the evening. The material (slides, videos and input files) is  still accessible via the course pageand of course can be further used as reference or self-study material.

Besides some constructive suggestions on how to improve this course format, the feedback to the course was generally positive. A few quotes from the feedback form:

Thank you for the efforts and for a very well designed introduction course!

Thank you, you guys are the best!

I would like to thank you for the entire Elmer/Ice team for providing this great opportunity to learn the model. This was my first time with Elmer/Ice and I have found the model very important and useful in my research work. The course was detailed, informative and well structured. The training session was interactive and encouraged me to use the model in my research work. I am motivated to use the model in my current and future research.

Thank you very much for taking the time to run this course. It was fantastic to get an introduction to Elmer and to realise the possibilities it presents. I look forward to beginning to use Elmer in the near future.

 Encouraged by these positive reactions, the Elmer/Ice team is considering to provide courses of the same online format also in the post-pandemic future.

ISMIP6 studies on Antarctic Ice Sheet


SeroussiEtAl2020AvatarThis study presents results from ice flow model simulations from 13 international groups focusing on the evolution of the Antarctic ice sheet during the period 2015–2100 as part of the Ice Sheet Model Intercomparison for CMIP6 (ISMIP6). Elmer/Ice is one of these models, which are forced with outputs from a subset of models from the Coupled Model Intercomparison Project Phase 5 (CMIP5), representative of the spread in climate model results. Simulations of the Antarctic ice sheet contribution to sea level rise in response to increased warming during this period varies between −7.8 and 30.0 cm of sea level equivalent (SLE) under Representative Concentration Pathway (RCP) 8.5 scenario forcing. These numbers are relative to a control experiment with constant climate conditions and should therefore be added to the mass loss contribution under climate conditions similar to present-day conditions over the same period. The simulated evolution of the West Antarctic ice sheet varies widely among models, with an overall mass loss, up to 18.0 cm SLE, in response to changes in oceanic conditions. East Antarctica mass change varies between −6.1 and 8.3 cm SLE in the simulations, with a significant increase in surface mass balance outweighing the increased ice discharge under most RCP 8.5 scenario forcings. The inclusion of ice shelf collapse, here assumed to be caused by large amounts of liquid water ponding at the surface of ice shelves, yields an additional simulated mass loss of 28 mm compared to simulations without ice shelf collapse. The largest sources of uncertainty come from the climate forcing, the ocean-induced melt rates, the calibration of these melt rates based on oceanic conditions taken outside of ice shelf cavities and the ice sheet dynamic response to these oceanic changes. Results under RCP 2.6 scenario based on two CMIP5 climate models show an additional mass loss of 0 and 3 cm of SLE on average compared to simulations done under present-day conditions for the two CMIP5 forcings used and display limited mass gain in East Antarctica.

 

Seroussi, H., et al. , 2020. ISMIP6 Antarctica: a multi-model ensemble of the Antarctic ice sheet evolution over the 21st century, The Cryosphere, 14, 3033–3070, doi:10.5194/tc-14-3033-2020

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