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Journal Article

Description and validation of the ice-sheet model Yelmo (version 1.0)


Robinson,  Alexander
Potsdam Institute for Climate Impact Research;

Alvarez-Solas,  Jorge
External Organizations;

Montoya,  Marisa
External Organizations;

Goelzer,  Heiko
External Organizations;

Greve,  Ralf
External Organizations;

Ritz,  Catherine
External Organizations;

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Robinson, A., Alvarez-Solas, J., Montoya, M., Goelzer, H., Greve, R., Ritz, C. (2020): Description and validation of the ice-sheet model Yelmo (version 1.0). - Geoscientific Model Development, 13, 6, 2805-2823.

Cite as: https://publications.pik-potsdam.de/pubman/item/item_25224
We describe the physics and features of the ice-sheet model Yelmo, an open-source project intended for collaborative development. Yelmo is a thermomechanical model, solving for the coupled velocity and temperature solutions of an ice sheet simultaneously. The ice dynamics are currently treated via a “hybrid” approach combining the shallow-ice and shallow-shelf/shelfy-stream approximations, which makes Yelmo an apt choice for studying a wide variety of problems. Yelmo's main innovations lie in its flexible and user-friendly infrastructure, which promotes portability and facilitates long-term development. In particular, all physics subroutines have been designed to be self-contained, so that they can be easily ported from Yelmo to other models, or easily replaced by improved or alternate methods in the future. Furthermore, hard-coded model choices are eschewed, replaced instead with convenient parameter options that allow the model to be adapted easily to different contexts. We show results for different ice-sheet benchmark tests, and we illustrate Yelmo's performance for the Antarctic ice sheet.