SeaRISE experiments revisited: potential sources of spread in multi-model projections of the Greenland ice sheet
The present paper revisits the future surface-climate experiments on the Greenland ice sheet proposed by the Sea-level Response to Ice Sheet Evolution (SeaRISE; Bindschadler et al., 2013) study. The projections of the different SeaRISE participants show dispersion, which has not been examined in det...
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/117830 2023-08-20T04:06:53+02:00 SeaRISE experiments revisited: potential sources of spread in multi-model projections of the Greenland ice sheet Saito, F. Abe-Ouchi, Ayako Takahashi, K. Blatter, Heinz 2016 application/application/pdf https://hdl.handle.net/20.500.11850/117830 https://doi.org/10.3929/ethz-b-000117830 en eng Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-10-43-2016 info:eu-repo/semantics/altIdentifier/wos/000377602600004 http://hdl.handle.net/20.500.11850/117830 doi:10.3929/ethz-b-000117830 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 Unported The Cryosphere, 10 (1) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftethz https://doi.org/20.500.11850/11783010.3929/ethz-b-00011783010.5194/tc-10-43-2016 2023-07-30T23:50:23Z The present paper revisits the future surface-climate experiments on the Greenland ice sheet proposed by the Sea-level Response to Ice Sheet Evolution (SeaRISE; Bindschadler et al., 2013) study. The projections of the different SeaRISE participants show dispersion, which has not been examined in detail to date. A series of sensitivity experiments are conducted and analyzed using the ice-sheet model for integrated Earth-system studies (IcIES) by replacing one or more formulations of the model parameters with those adopted in other model(s). The results show that large potential sources of the dispersion among the projections of the different SeaRISE participants are differences in the initialization methods and in the surface mass balance methods, and both aspects have almost equal impact on the results. The treatment of ice-sheet margins in the simulation has a secondary impact on the dispersion. We conclude that spinning up the model using fixed topography through the spin-up period while the temperature is allowed to evolve according to the surface temperature history is the preferred representation, at least for the experiment configuration examined in the present paper. A benchmark model experimental setup that most of the numerical models can perform is proposed for future intercomparison projects, in order to evaluate the uncertainties relating to pure ice-sheet model flow characteristics. ISSN:1994-0416 ISSN:1994-0424 Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere ETH Zürich Research Collection Greenland |
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Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
description |
The present paper revisits the future surface-climate experiments on the Greenland ice sheet proposed by the Sea-level Response to Ice Sheet Evolution (SeaRISE; Bindschadler et al., 2013) study. The projections of the different SeaRISE participants show dispersion, which has not been examined in detail to date. A series of sensitivity experiments are conducted and analyzed using the ice-sheet model for integrated Earth-system studies (IcIES) by replacing one or more formulations of the model parameters with those adopted in other model(s). The results show that large potential sources of the dispersion among the projections of the different SeaRISE participants are differences in the initialization methods and in the surface mass balance methods, and both aspects have almost equal impact on the results. The treatment of ice-sheet margins in the simulation has a secondary impact on the dispersion. We conclude that spinning up the model using fixed topography through the spin-up period while the temperature is allowed to evolve according to the surface temperature history is the preferred representation, at least for the experiment configuration examined in the present paper. A benchmark model experimental setup that most of the numerical models can perform is proposed for future intercomparison projects, in order to evaluate the uncertainties relating to pure ice-sheet model flow characteristics. ISSN:1994-0416 ISSN:1994-0424 |
format |
Article in Journal/Newspaper |
author |
Saito, F. Abe-Ouchi, Ayako Takahashi, K. Blatter, Heinz |
spellingShingle |
Saito, F. Abe-Ouchi, Ayako Takahashi, K. Blatter, Heinz SeaRISE experiments revisited: potential sources of spread in multi-model projections of the Greenland ice sheet |
author_facet |
Saito, F. Abe-Ouchi, Ayako Takahashi, K. Blatter, Heinz |
author_sort |
Saito, F. |
title |
SeaRISE experiments revisited: potential sources of spread in multi-model projections of the Greenland ice sheet |
title_short |
SeaRISE experiments revisited: potential sources of spread in multi-model projections of the Greenland ice sheet |
title_full |
SeaRISE experiments revisited: potential sources of spread in multi-model projections of the Greenland ice sheet |
title_fullStr |
SeaRISE experiments revisited: potential sources of spread in multi-model projections of the Greenland ice sheet |
title_full_unstemmed |
SeaRISE experiments revisited: potential sources of spread in multi-model projections of the Greenland ice sheet |
title_sort |
searise experiments revisited: potential sources of spread in multi-model projections of the greenland ice sheet |
publisher |
Copernicus |
publishDate |
2016 |
url |
https://hdl.handle.net/20.500.11850/117830 https://doi.org/10.3929/ethz-b-000117830 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, 10 (1) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-10-43-2016 info:eu-repo/semantics/altIdentifier/wos/000377602600004 http://hdl.handle.net/20.500.11850/117830 doi:10.3929/ethz-b-000117830 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 Unported |
op_doi |
https://doi.org/20.500.11850/11783010.3929/ethz-b-00011783010.5194/tc-10-43-2016 |
_version_ |
1774718245901697024 |