An iterative process for efficient optimisation of parameters in geoscientific models: a demonstration using the Parallel Ice Sheet Model (PISM) version 0.7.3

Phipps, Steven J.; Roberts, Jason L.; King, Matt A.

doi:https://doi.org/10.5194/gmd-14-5107-2021

Articles | Volume 14, issue 8

https://doi.org/10.5194/gmd-14-5107-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-14-5107-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 8

Development and technical paper

|

17 Aug 2021

Development and technical paper |

| 17 Aug 2021

An iterative process for efficient optimisation of parameters in geoscientific models: a demonstration using the Parallel Ice Sheet Model (PISM) version 0.7.3

Steven J. Phipps, Jason L. Roberts, and Matt A. King

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Final revised paper (published on 17 Aug 2021)
Supplement to the final revised paper
Preprint (discussion started on 30 Nov 2020)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Review of "An iterative process for efficient optimisation of parameters in geoscientific models: a demonstration using the Parallel Ice Sheet Model (PISM) version 0.7.3"', Anonymous Referee #1, 26 Dec 2020
- AC1: 'Reply on RC1', Steven Phipps, 05 Mar 2021
RC2: 'Review of a Geoscientific Model Development manuscript on “An iterative process for efficient optimisation of parameters in geoscientific models: a demonstration using the Parallel Ice Sheet Model (PISM) version 0.7.3” By S. J. Phipps et al.', Anonymous Referee #2, 28 Dec 2020
- AC2: 'Reply on RC2', Steven Phipps, 05 Mar 2021

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Steven Phipps on behalf of the Authors (16 Apr 2021) Author's response Author's tracked changes Manuscript

ED: Publish as is (10 May 2021) by Heiko Goelzer

AR by Steven Phipps on behalf of the Authors (11 May 2021) Manuscript

Short summary

Simplified schemes, known as parameterisations, are sometimes used to describe physical processes within numerical models. However, the values of the parameters are uncertain. This introduces uncertainty into the model outputs. We develop a simple approach to identify plausible ranges for model parameters. Using a model of the Antarctic Ice Sheet, we find that the value of one parameter can depend on the values of others. We conclude that a single optimal set of parameter values does not exist.