GREB-ISM v1.0: A coupled ice sheet model for the Globally Resolved Energy Balance model for global simulations on timescales of 100 kyr
We introduce a newly developed global ice sheet model coupled to the Globally Resolved Energy Balance (GREB) climate model for the simulation of global ice sheet evolution on timescales of 100 kyr or longer (GREB-ISM v1.0). Ice sheets and ice shelves are simulated on a global grid, fully interacting...
Published in: | Geoscientific Model Development |
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Copernicus Publications
2022
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Online Access: | https://doi.org/10.5194/gmd-15-3691-2022 https://noa.gwlb.de/receive/cop_mods_00060944 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060484/gmd-15-3691-2022.pdf https://gmd.copernicus.org/articles/15/3691/2022/gmd-15-3691-2022.pdf |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00060944 2023-05-15T13:49:21+02:00 GREB-ISM v1.0: A coupled ice sheet model for the Globally Resolved Energy Balance model for global simulations on timescales of 100 kyr Xie, Zhiang Dommenget, Dietmar McCormack, Felicity S. Mackintosh, Andrew N. 2022-05 electronic https://doi.org/10.5194/gmd-15-3691-2022 https://noa.gwlb.de/receive/cop_mods_00060944 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060484/gmd-15-3691-2022.pdf https://gmd.copernicus.org/articles/15/3691/2022/gmd-15-3691-2022.pdf eng eng Copernicus Publications Geoscientific Model Development -- http://www.bibliothek.uni-regensburg.de/ezeit/?2456725 -- http://www.geosci-model-dev.net/ -- 1991-9603 https://doi.org/10.5194/gmd-15-3691-2022 https://noa.gwlb.de/receive/cop_mods_00060944 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060484/gmd-15-3691-2022.pdf https://gmd.copernicus.org/articles/15/3691/2022/gmd-15-3691-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/gmd-15-3691-2022 2022-05-15T23:09:49Z We introduce a newly developed global ice sheet model coupled to the Globally Resolved Energy Balance (GREB) climate model for the simulation of global ice sheet evolution on timescales of 100 kyr or longer (GREB-ISM v1.0). Ice sheets and ice shelves are simulated on a global grid, fully interacting with the climate simulation of surface temperature, precipitation, albedo, land–sea mask, topography and sea level. Thus, it is a fully coupled atmosphere, ocean, land and ice sheet model. We test the model in ice sheet stand-alone and fully coupled simulations. The ice sheet model dynamics behave similarly to other hybrid SIA (shallow ice approximation) and SSA (shallow shelf approximation) models, but the West Antarctic Ice Sheet accumulates too much ice using present-day boundary conditions. The coupled model simulations produce global equilibrium ice sheet volumes and calving rates like those observed for present-day boundary conditions. We designed a series of idealized experiments driven by oscillating solar radiation forcing on periods of 20, 50 and 100 kyr in the Northern Hemisphere. These simulations show clear interactions between the climate system and ice sheets, resulting in slow buildup and fast decay of ice-covered areas and global ice volume. The results also show that Northern Hemisphere ice sheets respond more strongly to timescales longer than 100 kyr. The coupling to the atmosphere and sea level leads to climate interactions between the Northern and Southern Hemispheres. The model can run global simulations of 100 kyr d−1 on a desktop computer, allowing the simulation of the whole Quaternary period (2.6 Myr) within 1 month. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Ice Shelves ice covered areas Niedersächsisches Online-Archiv NOA Antarctic West Antarctic Ice Sheet Geoscientific Model Development 15 9 3691 3719 |
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Niedersächsisches Online-Archiv NOA |
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English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Xie, Zhiang Dommenget, Dietmar McCormack, Felicity S. Mackintosh, Andrew N. GREB-ISM v1.0: A coupled ice sheet model for the Globally Resolved Energy Balance model for global simulations on timescales of 100 kyr |
topic_facet |
article Verlagsveröffentlichung |
description |
We introduce a newly developed global ice sheet model coupled to the Globally Resolved Energy Balance (GREB) climate model for the simulation of global ice sheet evolution on timescales of 100 kyr or longer (GREB-ISM v1.0). Ice sheets and ice shelves are simulated on a global grid, fully interacting with the climate simulation of surface temperature, precipitation, albedo, land–sea mask, topography and sea level. Thus, it is a fully coupled atmosphere, ocean, land and ice sheet model. We test the model in ice sheet stand-alone and fully coupled simulations. The ice sheet model dynamics behave similarly to other hybrid SIA (shallow ice approximation) and SSA (shallow shelf approximation) models, but the West Antarctic Ice Sheet accumulates too much ice using present-day boundary conditions. The coupled model simulations produce global equilibrium ice sheet volumes and calving rates like those observed for present-day boundary conditions. We designed a series of idealized experiments driven by oscillating solar radiation forcing on periods of 20, 50 and 100 kyr in the Northern Hemisphere. These simulations show clear interactions between the climate system and ice sheets, resulting in slow buildup and fast decay of ice-covered areas and global ice volume. The results also show that Northern Hemisphere ice sheets respond more strongly to timescales longer than 100 kyr. The coupling to the atmosphere and sea level leads to climate interactions between the Northern and Southern Hemispheres. The model can run global simulations of 100 kyr d−1 on a desktop computer, allowing the simulation of the whole Quaternary period (2.6 Myr) within 1 month. |
format |
Article in Journal/Newspaper |
author |
Xie, Zhiang Dommenget, Dietmar McCormack, Felicity S. Mackintosh, Andrew N. |
author_facet |
Xie, Zhiang Dommenget, Dietmar McCormack, Felicity S. Mackintosh, Andrew N. |
author_sort |
Xie, Zhiang |
title |
GREB-ISM v1.0: A coupled ice sheet model for the Globally Resolved Energy Balance model for global simulations on timescales of 100 kyr |
title_short |
GREB-ISM v1.0: A coupled ice sheet model for the Globally Resolved Energy Balance model for global simulations on timescales of 100 kyr |
title_full |
GREB-ISM v1.0: A coupled ice sheet model for the Globally Resolved Energy Balance model for global simulations on timescales of 100 kyr |
title_fullStr |
GREB-ISM v1.0: A coupled ice sheet model for the Globally Resolved Energy Balance model for global simulations on timescales of 100 kyr |
title_full_unstemmed |
GREB-ISM v1.0: A coupled ice sheet model for the Globally Resolved Energy Balance model for global simulations on timescales of 100 kyr |
title_sort |
greb-ism v1.0: a coupled ice sheet model for the globally resolved energy balance model for global simulations on timescales of 100 kyr |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/gmd-15-3691-2022 https://noa.gwlb.de/receive/cop_mods_00060944 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060484/gmd-15-3691-2022.pdf https://gmd.copernicus.org/articles/15/3691/2022/gmd-15-3691-2022.pdf |
geographic |
Antarctic West Antarctic Ice Sheet |
geographic_facet |
Antarctic West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Ice Sheet Ice Shelves ice covered areas |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelves ice covered areas |
op_relation |
Geoscientific Model Development -- http://www.bibliothek.uni-regensburg.de/ezeit/?2456725 -- http://www.geosci-model-dev.net/ -- 1991-9603 https://doi.org/10.5194/gmd-15-3691-2022 https://noa.gwlb.de/receive/cop_mods_00060944 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00060484/gmd-15-3691-2022.pdf https://gmd.copernicus.org/articles/15/3691/2022/gmd-15-3691-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/gmd-15-3691-2022 |
container_title |
Geoscientific Model Development |
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15 |
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9 |
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3691 |
op_container_end_page |
3719 |
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1766251225180798976 |