The Cryosphere
The Cryosphere
TC
Articles | Volume 17, issue 12
Articles | Volume 17, issue 12
https://doi.org/10.5194/tc-17-5027-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-17-5027-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 12
Research article
 | 
29 Nov 2023
Research article |  | 29 Nov 2023

Regularization and L-curves in ice sheet inverse models: a case study in the Filchner–Ronne catchment

Michael Wolovick, Angelika Humbert, Thomas Kleiner, and Martin Rückamp

Data sets

Inverse Model Results for Filchner-Ronne Catchment Michael Wolovick, Angelika Humbert, Thomas Kleiner, and Martin Rueckamp https://doi.org/10.5281/zenodo.7798650

Model code and software

Inverse Model Results for Filchner-Ronne Catchment Michael Wolovick, Angelika Humbert, Thomas Kleiner, and Martin Rueckamp https://doi.org/10.5281/zenodo.7798650

Continental scale, high order, high spatial resolution, ice sheet modeling using the Ice Sheet System Model (ISSM) (https://issm.jpl.nasa.gov/) E. Larour, H. Seroussi, M. Morlighem, and E. Rignot https://doi.org/10.1029/2011JF002140

Download
Short summary
The friction underneath ice sheets can be inferred from observed velocity at the top, but this inference requires smoothing. The selection of smoothing has been highly variable in the literature. Here we show how to rigorously select the best smoothing, and we show that the inferred friction converges towards the best knowable field as model resolution improves. We use this to learn about the best description of basal friction and to formulate recommended best practices for other modelers.
Read more