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...
Published in: | The Cryosphere |
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Online Access: | https://publications.pik-potsdam.de/pubman/item/item_22194 https://publications.pik-potsdam.de/pubman/item/item_22194_1/component/file_22195/7937oa.pdf |
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ftpotsdamik:oai:publications.pik-potsdam.de:item_22194 2023-10-29T02:36:37+01:00 Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison Gölzer, H. Nowicki, S. Edwards, T. Beckley, M. Abe-Ouchi, A. Aschwanden, A. Calov, R. Gagliardini, O. Gillet-Chaulet, F. Golledge, N. Gregory, J. Greve, R. Humbert, A. Huybrechts, P. Kennedy, J. Larour, E. Lipscomb, W. Le clec´h, S. Lee, V. Morlighem, M. Pattyn, F. Payne, A. Rodehacke, C. Rückamp, M. Saito, F. Schlegel, N. Seroussi, H. Shepherd, A. Sun, S. Wal, R. Ziemen, F. 2018 application/pdf https://publications.pik-potsdam.de/pubman/item/item_22194 https://publications.pik-potsdam.de/pubman/item/item_22194_1/component/file_22195/7937oa.pdf unknown info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-12-1433-2018 https://publications.pik-potsdam.de/pubman/item/item_22194 https://publications.pik-potsdam.de/pubman/item/item_22194_1/component/file_22195/7937oa.pdf info:eu-repo/semantics/openAccess The Cryosphere info:eu-repo/semantics/article 2018 ftpotsdamik https://doi.org/10.5194/tc-12-1433-2018 2023-09-30T17:59:48Z 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. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere Publication Database PIK (Potsdam Institute for Climate Impact Research) The Cryosphere 12 4 1433 1460 |
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Open Polar |
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Publication Database PIK (Potsdam Institute for Climate Impact Research) |
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ftpotsdamik |
language |
unknown |
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. |
format |
Article in Journal/Newspaper |
author |
Gölzer, H. Nowicki, S. Edwards, T. Beckley, M. Abe-Ouchi, A. Aschwanden, A. Calov, R. Gagliardini, O. Gillet-Chaulet, F. Golledge, N. Gregory, J. Greve, R. Humbert, A. Huybrechts, P. Kennedy, J. Larour, E. Lipscomb, W. Le clec´h, S. Lee, V. Morlighem, M. Pattyn, F. Payne, A. Rodehacke, C. Rückamp, M. Saito, F. Schlegel, N. Seroussi, H. Shepherd, A. Sun, S. Wal, R. Ziemen, F. |
spellingShingle |
Gölzer, H. Nowicki, S. Edwards, T. Beckley, M. Abe-Ouchi, A. Aschwanden, A. Calov, R. Gagliardini, O. Gillet-Chaulet, F. Golledge, N. Gregory, J. Greve, R. Humbert, A. Huybrechts, P. Kennedy, J. Larour, E. Lipscomb, W. Le clec´h, S. Lee, V. Morlighem, M. Pattyn, F. Payne, A. Rodehacke, C. Rückamp, M. Saito, F. Schlegel, N. Seroussi, H. Shepherd, A. Sun, S. Wal, R. Ziemen, F. Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison |
author_facet |
Gölzer, H. Nowicki, S. Edwards, T. Beckley, M. Abe-Ouchi, A. Aschwanden, A. Calov, R. Gagliardini, O. Gillet-Chaulet, F. Golledge, N. Gregory, J. Greve, R. Humbert, A. Huybrechts, P. Kennedy, J. Larour, E. Lipscomb, W. Le clec´h, S. Lee, V. Morlighem, M. Pattyn, F. Payne, A. Rodehacke, C. Rückamp, M. Saito, F. Schlegel, N. Seroussi, H. Shepherd, A. Sun, S. Wal, R. Ziemen, F. |
author_sort |
Gölzer, H. |
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 |
publishDate |
2018 |
url |
https://publications.pik-potsdam.de/pubman/item/item_22194 https://publications.pik-potsdam.de/pubman/item/item_22194_1/component/file_22195/7937oa.pdf |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-12-1433-2018 https://publications.pik-potsdam.de/pubman/item/item_22194 https://publications.pik-potsdam.de/pubman/item/item_22194_1/component/file_22195/7937oa.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-12-1433-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
4 |
container_start_page |
1433 |
op_container_end_page |
1460 |
_version_ |
1781060650187882496 |