Articles | Volume 14, issue 2
The Cryosphere, 14, 673–691, 2020
https://doi.org/10.5194/tc-14-673-2020
The Cryosphere, 14, 673–691, 2020
https://doi.org/10.5194/tc-14-673-2020

Research article 17 Feb 2020

Research article | 17 Feb 2020

Parameter sensitivity analysis of dynamic ice sheet models – numerical computations

Gong Cheng and Per Lötstedt

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ED: Publish subject to minor revisions (review by editor) (06 Jan 2020) by Alexander Robinson
AR by Gong Cheng on behalf of the Authors (06 Jan 2020)  Author's response    Manuscript
ED: Publish subject to technical corrections (17 Jan 2020) by Alexander Robinson
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Short summary
We present a time-dependent inverse method for ice sheet modeling. By investigating the sensitivity of the observations of the velocity and the height at the surface to the basal conditions of the ice, we show that if the basal parameters are time dependent, then time cannot be ignored in the inversion. By looking at the numerical features, we conclude that adding the height information of an ice sheet in the velocity inversion procedure could improve the robustness of the inference.