Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison
Earlier large-scale Greenland ice sheet sea-level projections (e.g. those run during the ice2sea and SeaRISE initiatives) have shown that ice sheet initial conditions have a large effect on the projections and give rise to important uncertainties. The goal of this initMIP-Greenland intercomparison e...
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ftleibnizopen:oai:oai.leibnizopen.de:V9JDfYoBNQPDO7WIeWSR 2023-10-09T21:51:53+02:00 Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison Goelzer, Heiko Nowicki, Sophie Edwards, Tamsin Beckley, Matthew Abe-Ouchi, Ayako Aschwanden, Andy Calov, Reinhard Gagliardini, Olivier Gillet-Chaulet, Fabien Golledge, Nicholas R. Gregory, Jonathan Greve, Ralf Humbert, Angelika Huybrechts, Philippe Kennedy, Joseph H. Larour, Eric Lipscomb, William H. Le clec'h, Sébastien Lee, Victoria Morlighem, Mathieu Pattyn, Frank Payne, Antony J. Rodehacke, Christian Martin Rückamp, Martin Saito, Fuyuki Schlegel, Nicole Seroussi, Helene Shepherd, Andrew Sun, Sainan van de Wal, Roderik Ziemen, Florian A. 2018 application/pdf https://doi.org/10.34657/898 https://oa.tib.eu/renate/handle/123456789/665 eng eng München : European Geopyhsical Union CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ The Cryosphere, Volume 12, Issue 4, Page 1433-1460 Comparative study design experimental study ice sheet mass balance perturbation prediction sea level uncertainty analysis 550 article Text 2018 ftleibnizopen https://doi.org/10.34657/898 2023-09-10T23:34:06Z Earlier large-scale Greenland ice sheet sea-level projections (e.g. those run during the ice2sea and SeaRISE initiatives) have shown that ice sheet initial conditions have a large effect on the projections and give rise to important uncertainties. The goal of this initMIP-Greenland intercomparison exercise is to compare, evaluate, and improve the initialisation techniques used in the ice sheet modelling community and to estimate the associated uncertainties in modelled mass changes. initMIP-Greenland is the first in a series of ice sheet model intercomparison activities within ISMIP6 (the Ice Sheet Model Intercomparison Project for CMIP6), which is the primary activity within the Coupled Model Intercomparison Project Phase 6 (CMIP6) focusing on the ice sheets. Two experiments for the large-scale Greenland ice sheet have been designed to allow intercomparison between participating models of (1) the initial present-day state of the ice sheet and (2) the response in two idealised forward experiments. The forward experiments serve to evaluate the initialisation in terms of model drift (forward run without additional forcing) and in response to a large perturbation (prescribed surface mass balance anomaly); they should not be interpreted as sea-level projections. We present and discuss results that highlight the diversity of data sets, boundary conditions, and initialisation techniques used in the community to generate initial states of the Greenland ice sheet. We find good agreement across the ensemble for the dynamic response to surface mass balance changes in areas where the simulated ice sheets overlap but differences arising from the initial size of the ice sheet. The model drift in the control experiment is reduced for models that participated in earlier intercomparison exercises. publishedVersion Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere LeibnizOpen (The Leibniz Association) Greenland |
institution |
Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
Comparative study design experimental study ice sheet mass balance perturbation prediction sea level uncertainty analysis 550 |
spellingShingle |
Comparative study design experimental study ice sheet mass balance perturbation prediction sea level uncertainty analysis 550 Goelzer, Heiko Nowicki, Sophie Edwards, Tamsin Beckley, Matthew Abe-Ouchi, Ayako Aschwanden, Andy Calov, Reinhard Gagliardini, Olivier Gillet-Chaulet, Fabien Golledge, Nicholas R. Gregory, Jonathan Greve, Ralf Humbert, Angelika Huybrechts, Philippe Kennedy, Joseph H. Larour, Eric Lipscomb, William H. Le clec'h, Sébastien Lee, Victoria Morlighem, Mathieu Pattyn, Frank Payne, Antony J. Rodehacke, Christian Martin Rückamp, Martin Saito, Fuyuki Schlegel, Nicole Seroussi, Helene Shepherd, Andrew Sun, Sainan van de Wal, Roderik Ziemen, Florian A. Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison |
topic_facet |
Comparative study design experimental study ice sheet mass balance perturbation prediction sea level uncertainty analysis 550 |
description |
Earlier large-scale Greenland ice sheet sea-level projections (e.g. those run during the ice2sea and SeaRISE initiatives) have shown that ice sheet initial conditions have a large effect on the projections and give rise to important uncertainties. The goal of this initMIP-Greenland intercomparison exercise is to compare, evaluate, and improve the initialisation techniques used in the ice sheet modelling community and to estimate the associated uncertainties in modelled mass changes. initMIP-Greenland is the first in a series of ice sheet model intercomparison activities within ISMIP6 (the Ice Sheet Model Intercomparison Project for CMIP6), which is the primary activity within the Coupled Model Intercomparison Project Phase 6 (CMIP6) focusing on the ice sheets. Two experiments for the large-scale Greenland ice sheet have been designed to allow intercomparison between participating models of (1) the initial present-day state of the ice sheet and (2) the response in two idealised forward experiments. The forward experiments serve to evaluate the initialisation in terms of model drift (forward run without additional forcing) and in response to a large perturbation (prescribed surface mass balance anomaly); they should not be interpreted as sea-level projections. We present and discuss results that highlight the diversity of data sets, boundary conditions, and initialisation techniques used in the community to generate initial states of the Greenland ice sheet. We find good agreement across the ensemble for the dynamic response to surface mass balance changes in areas where the simulated ice sheets overlap but differences arising from the initial size of the ice sheet. The model drift in the control experiment is reduced for models that participated in earlier intercomparison exercises. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Goelzer, Heiko Nowicki, Sophie Edwards, Tamsin Beckley, Matthew Abe-Ouchi, Ayako Aschwanden, Andy Calov, Reinhard Gagliardini, Olivier Gillet-Chaulet, Fabien Golledge, Nicholas R. Gregory, Jonathan Greve, Ralf Humbert, Angelika Huybrechts, Philippe Kennedy, Joseph H. Larour, Eric Lipscomb, William H. Le clec'h, Sébastien Lee, Victoria Morlighem, Mathieu Pattyn, Frank Payne, Antony J. Rodehacke, Christian Martin Rückamp, Martin Saito, Fuyuki Schlegel, Nicole Seroussi, Helene Shepherd, Andrew Sun, Sainan van de Wal, Roderik Ziemen, Florian A. |
author_facet |
Goelzer, Heiko Nowicki, Sophie Edwards, Tamsin Beckley, Matthew Abe-Ouchi, Ayako Aschwanden, Andy Calov, Reinhard Gagliardini, Olivier Gillet-Chaulet, Fabien Golledge, Nicholas R. Gregory, Jonathan Greve, Ralf Humbert, Angelika Huybrechts, Philippe Kennedy, Joseph H. Larour, Eric Lipscomb, William H. Le clec'h, Sébastien Lee, Victoria Morlighem, Mathieu Pattyn, Frank Payne, Antony J. Rodehacke, Christian Martin Rückamp, Martin Saito, Fuyuki Schlegel, Nicole Seroussi, Helene Shepherd, Andrew Sun, Sainan van de Wal, Roderik Ziemen, Florian A. |
author_sort |
Goelzer, Heiko |
title |
Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison |
title_short |
Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison |
title_full |
Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison |
title_fullStr |
Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison |
title_full_unstemmed |
Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison |
title_sort |
design and results of the ice sheet model initialisation experiments initmip-greenland: an ismip6 intercomparison |
publisher |
München : European Geopyhsical Union |
publishDate |
2018 |
url |
https://doi.org/10.34657/898 https://oa.tib.eu/renate/handle/123456789/665 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Volume 12, Issue 4, Page 1433-1460 |
op_rights |
CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.34657/898 |
_version_ |
1779315006905516032 |