Coupled ice sheet–climate modeling under glacial and pre-industrial boundary conditions
In the standard Paleoclimate Modelling Intercomparison Project (PMIP) experiments, the Last Glacial Maximum (LGM) is modeled in quasi-equilibrium with atmosphere–ocean–vegetation general circulation models (AOVGCMs) with prescribed ice sheets. This can lead to inconsistencies between the modeled cli...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:0cd50381105f4928aea8dc4019a666af 2023-05-15T16:35:38+02:00 Coupled ice sheet–climate modeling under glacial and pre-industrial boundary conditions F. A. Ziemen C. B. Rodehacke U. Mikolajewicz 2014-10-01 https://doi.org/10.5194/cp-10-1817-2014 http://www.clim-past.net/10/1817/2014/cp-10-1817-2014.pdf https://doaj.org/article/0cd50381105f4928aea8dc4019a666af en eng Copernicus Publications 1814-9324 1814-9332 doi:10.5194/cp-10-1817-2014 http://www.clim-past.net/10/1817/2014/cp-10-1817-2014.pdf https://doaj.org/article/0cd50381105f4928aea8dc4019a666af undefined Climate of the Past, Vol 10, Iss 5, Pp 1817-1836 (2014) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2014 fttriple https://doi.org/10.5194/cp-10-1817-2014 2023-01-22T19:23:46Z In the standard Paleoclimate Modelling Intercomparison Project (PMIP) experiments, the Last Glacial Maximum (LGM) is modeled in quasi-equilibrium with atmosphere–ocean–vegetation general circulation models (AOVGCMs) with prescribed ice sheets. This can lead to inconsistencies between the modeled climate and ice sheets. One way to avoid this problem would be to model the ice sheets explicitly. Here, we present the first results from coupled ice sheet–climate simulations for the pre-industrial times and the LGM. Our setup consists of the AOVGCM ECHAM5/MPIOM/LPJ bidirectionally coupled with the Parallel Ice Sheet Model (PISM) covering the Northern Hemisphere. The results of the pre-industrial and LGM simulations agree reasonably well with reconstructions and observations. This shows that the model system adequately represents large, non-linear climate perturbations. A large part of the drainage of the ice sheets occurs in ice streams. Most modeled ice stream systems show recurring surges as internal oscillations. The Hudson Strait Ice Stream surges with an ice volume equivalent to about 5 m sea level and a recurrence interval of about 7000 yr. This is in agreement with basic expectations for Heinrich events. Under LGM boundary conditions, different ice sheet configurations imply different locations of deep water formation. Article in Journal/Newspaper Hudson Strait Ice Sheet Unknown Hudson Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) Climate of the Past 10 5 1817 1836 |
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geo envir F. A. Ziemen C. B. Rodehacke U. Mikolajewicz Coupled ice sheet–climate modeling under glacial and pre-industrial boundary conditions |
topic_facet |
geo envir |
description |
In the standard Paleoclimate Modelling Intercomparison Project (PMIP) experiments, the Last Glacial Maximum (LGM) is modeled in quasi-equilibrium with atmosphere–ocean–vegetation general circulation models (AOVGCMs) with prescribed ice sheets. This can lead to inconsistencies between the modeled climate and ice sheets. One way to avoid this problem would be to model the ice sheets explicitly. Here, we present the first results from coupled ice sheet–climate simulations for the pre-industrial times and the LGM. Our setup consists of the AOVGCM ECHAM5/MPIOM/LPJ bidirectionally coupled with the Parallel Ice Sheet Model (PISM) covering the Northern Hemisphere. The results of the pre-industrial and LGM simulations agree reasonably well with reconstructions and observations. This shows that the model system adequately represents large, non-linear climate perturbations. A large part of the drainage of the ice sheets occurs in ice streams. Most modeled ice stream systems show recurring surges as internal oscillations. The Hudson Strait Ice Stream surges with an ice volume equivalent to about 5 m sea level and a recurrence interval of about 7000 yr. This is in agreement with basic expectations for Heinrich events. Under LGM boundary conditions, different ice sheet configurations imply different locations of deep water formation. |
format |
Article in Journal/Newspaper |
author |
F. A. Ziemen C. B. Rodehacke U. Mikolajewicz |
author_facet |
F. A. Ziemen C. B. Rodehacke U. Mikolajewicz |
author_sort |
F. A. Ziemen |
title |
Coupled ice sheet–climate modeling under glacial and pre-industrial boundary conditions |
title_short |
Coupled ice sheet–climate modeling under glacial and pre-industrial boundary conditions |
title_full |
Coupled ice sheet–climate modeling under glacial and pre-industrial boundary conditions |
title_fullStr |
Coupled ice sheet–climate modeling under glacial and pre-industrial boundary conditions |
title_full_unstemmed |
Coupled ice sheet–climate modeling under glacial and pre-industrial boundary conditions |
title_sort |
coupled ice sheet–climate modeling under glacial and pre-industrial boundary conditions |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/cp-10-1817-2014 http://www.clim-past.net/10/1817/2014/cp-10-1817-2014.pdf https://doaj.org/article/0cd50381105f4928aea8dc4019a666af |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) |
geographic |
Hudson Hudson Strait |
geographic_facet |
Hudson Hudson Strait |
genre |
Hudson Strait Ice Sheet |
genre_facet |
Hudson Strait Ice Sheet |
op_source |
Climate of the Past, Vol 10, Iss 5, Pp 1817-1836 (2014) |
op_relation |
1814-9324 1814-9332 doi:10.5194/cp-10-1817-2014 http://www.clim-past.net/10/1817/2014/cp-10-1817-2014.pdf https://doaj.org/article/0cd50381105f4928aea8dc4019a666af |
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undefined |
op_doi |
https://doi.org/10.5194/cp-10-1817-2014 |
container_title |
Climate of the Past |
container_volume |
10 |
container_issue |
5 |
container_start_page |
1817 |
op_container_end_page |
1836 |
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1766025916951035904 |