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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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://nrl.northumbria.ac.uk/id/eprint/47233/ https://doi.org/10.5194/tc-12-1433-2018 https://nrl.northumbria.ac.uk/id/eprint/47233/1/tc-12-1433-2018.pdf |
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:47233 2023-05-15T16:25:30+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 Rückamp, Martin Saito, Fuyuki Schlegel, Nicole Seroussi, Helene Shepherd, Andrew Sun, Sainan van de Wal, Roderik Ziemen, Florian A. 2018-04-19 text https://nrl.northumbria.ac.uk/id/eprint/47233/ https://doi.org/10.5194/tc-12-1433-2018 https://nrl.northumbria.ac.uk/id/eprint/47233/1/tc-12-1433-2018.pdf en eng Coperincus https://nrl.northumbria.ac.uk/id/eprint/47233/1/tc-12-1433-2018.pdf 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, Rückamp, Martin, Saito, Fuyuki, Schlegel, Nicole, Seroussi, Helene, Shepherd, Andrew, Sun, Sainan, van de Wal, Roderik and Ziemen, Florian A. (2018) Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison. The Cryosphere, 12 (4). pp. 1433-1460. ISSN 1994-0424 cc_by_4_0 CC-BY F700 Ocean Sciences F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2018 ftunivnorthumb https://doi.org/10.5194/tc-12-1433-2018 2022-09-25T06:14:28Z 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 Northumbria University, Newcastle: Northumbria Research Link (NRL) Greenland The Cryosphere 12 4 1433 1460 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F700 Ocean Sciences F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F700 Ocean Sciences F800 Physical and Terrestrial Geographical and Environmental Sciences 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 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 |
F700 Ocean Sciences F800 Physical and Terrestrial Geographical and Environmental Sciences |
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 |
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 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 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 |
Coperincus |
publishDate |
2018 |
url |
https://nrl.northumbria.ac.uk/id/eprint/47233/ https://doi.org/10.5194/tc-12-1433-2018 https://nrl.northumbria.ac.uk/id/eprint/47233/1/tc-12-1433-2018.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/47233/1/tc-12-1433-2018.pdf 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, Rückamp, Martin, Saito, Fuyuki, Schlegel, Nicole, Seroussi, Helene, Shepherd, Andrew, Sun, Sainan, van de Wal, Roderik and Ziemen, Florian A. (2018) Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison. The Cryosphere, 12 (4). pp. 1433-1460. ISSN 1994-0424 |
op_rights |
cc_by_4_0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-12-1433-2018 |
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The Cryosphere |
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12 |
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