Design and results of the ice sheet model initialisation 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...
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/272906 https://dipot.ulb.ac.be/dspace/bitstream/2013/272906/1/doi_256533.pdf |
id |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/272906 |
---|---|
record_format |
openpolar |
spelling |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/272906 2024-04-21T08:02:59+00:00 Design and results of the ice sheet model initialisation initMIP-Greenland: An ISMIP6 intercomparison Goelzer, Heiko Nowicki, Sophie Edwards, T. Beckley, M. Abe-Ouchi, Ayako Aschwanden, A. Calov, R. Gagliardini, O. Gillet-Chaulet, F. Golledge, Nicholas Gregory, Jonathan Greve, Ralf Humbert, A. Huybrechts, Philippe Kennedy, J.H. Larour, Eric Lipscomb, William Leclech, S. Lee, V. Morlighem, M. Pattyn, Frank Payne, A.J. Rodehacke, C. Rückamp, M. Saito, F. Schlegel, N. Seroussi, Helene Shepherd, Andrew Sun, Sainan van de Wal, Roderik S W Ziemen, F.A. 2018-04 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/272906 https://dipot.ulb.ac.be/dspace/bitstream/2013/272906/1/doi_256533.pdf en eng uri/info:doi/10.5194/tc-12-1433-2018 uri/info:scp/85045918121 https://dipot.ulb.ac.be/dspace/bitstream/2013/272906/1/doi_256533.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/272906 1 full-text file(s): info:eu-repo/semantics/openAccess The Cryosphere, 12 (4 Géologie et minéralogie Econométrie et méthodes statistiques :théorie et applications info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2018 ftunivbruxelles 2024-03-27T17:11:36Z 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. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Géologie et minéralogie Econométrie et méthodes statistiques :théorie et applications |
spellingShingle |
Géologie et minéralogie Econométrie et méthodes statistiques :théorie et applications Goelzer, Heiko Nowicki, Sophie Edwards, T. Beckley, M. Abe-Ouchi, Ayako Aschwanden, A. Calov, R. Gagliardini, O. Gillet-Chaulet, F. Golledge, Nicholas Gregory, Jonathan Greve, Ralf Humbert, A. Huybrechts, Philippe Kennedy, J.H. Larour, Eric Lipscomb, William Leclech, S. Lee, V. Morlighem, M. Pattyn, Frank Payne, A.J. Rodehacke, C. Rückamp, M. Saito, F. Schlegel, N. Seroussi, Helene Shepherd, Andrew Sun, Sainan van de Wal, Roderik S W Ziemen, F.A. Design and results of the ice sheet model initialisation initMIP-Greenland: An ISMIP6 intercomparison |
topic_facet |
Géologie et minéralogie Econométrie et méthodes statistiques :théorie et applications |
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. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Goelzer, Heiko Nowicki, Sophie Edwards, T. Beckley, M. Abe-Ouchi, Ayako Aschwanden, A. Calov, R. Gagliardini, O. Gillet-Chaulet, F. Golledge, Nicholas Gregory, Jonathan Greve, Ralf Humbert, A. Huybrechts, Philippe Kennedy, J.H. Larour, Eric Lipscomb, William Leclech, S. Lee, V. Morlighem, M. Pattyn, Frank Payne, A.J. Rodehacke, C. Rückamp, M. Saito, F. Schlegel, N. Seroussi, Helene Shepherd, Andrew Sun, Sainan van de Wal, Roderik S W Ziemen, F.A. |
author_facet |
Goelzer, Heiko Nowicki, Sophie Edwards, T. Beckley, M. Abe-Ouchi, Ayako Aschwanden, A. Calov, R. Gagliardini, O. Gillet-Chaulet, F. Golledge, Nicholas Gregory, Jonathan Greve, Ralf Humbert, A. Huybrechts, Philippe Kennedy, J.H. Larour, Eric Lipscomb, William Leclech, S. Lee, V. Morlighem, M. Pattyn, Frank Payne, A.J. Rodehacke, C. Rückamp, M. Saito, F. Schlegel, N. Seroussi, Helene Shepherd, Andrew Sun, Sainan van de Wal, Roderik S W Ziemen, F.A. |
author_sort |
Goelzer, Heiko |
title |
Design and results of the ice sheet model initialisation initMIP-Greenland: An ISMIP6 intercomparison |
title_short |
Design and results of the ice sheet model initialisation initMIP-Greenland: An ISMIP6 intercomparison |
title_full |
Design and results of the ice sheet model initialisation initMIP-Greenland: An ISMIP6 intercomparison |
title_fullStr |
Design and results of the ice sheet model initialisation initMIP-Greenland: An ISMIP6 intercomparison |
title_full_unstemmed |
Design and results of the ice sheet model initialisation initMIP-Greenland: An ISMIP6 intercomparison |
title_sort |
design and results of the ice sheet model initialisation initmip-greenland: an ismip6 intercomparison |
publishDate |
2018 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/272906 https://dipot.ulb.ac.be/dspace/bitstream/2013/272906/1/doi_256533.pdf |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, 12 (4 |
op_relation |
uri/info:doi/10.5194/tc-12-1433-2018 uri/info:scp/85045918121 https://dipot.ulb.ac.be/dspace/bitstream/2013/272906/1/doi_256533.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/272906 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/openAccess |
_version_ |
1796943017044606976 |