Modelling past sea ice changes
A dominant characteristic of the available simulations of past sea ice changes is the strong link between the model results for modern and past climates. Nearly all the models have similar extent for preindustrial conditions and for the mid-Holocene. The models with the largest extent at Last Glacia...
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:129633 2024-05-12T08:00:29+00:00 Modelling past sea ice changes Goosse, Hugues Roche, D.M. Mairesse, Aurélien Berger, M. UCL - SST/ELI/ELIC - Earth & Climate 2013 http://hdl.handle.net/2078.1/129633 https://doi.org/10.1016/j.quascirev.2013.03.011 eng eng Pergamon boreal:129633 http://hdl.handle.net/2078.1/129633 doi:10.1016/j.quascirev.2013.03.011 urn:ISSN:0277-3791 urn:EISSN:1873-457X info:eu-repo/semantics/restrictedAccess Quaternary Science Reviews, , no.n/, p. 1-16 (2013) Sea ice Models Proxy records Benchmarking LGM Holocene Past millennium CISM: CECI 1443 info:eu-repo/semantics/article 2013 ftunistlouisbrus https://doi.org/10.1016/j.quascirev.2013.03.011 2024-04-18T18:00:45Z A dominant characteristic of the available simulations of past sea ice changes is the strong link between the model results for modern and past climates. Nearly all the models have similar extent for preindustrial conditions and for the mid-Holocene. The models with the largest extent at Last Glacial Maximum (LGM) are also characterized by large pre-industrial values. As a consequence, the causes of model biases and of the spread of model responses identified for present-day conditions appear relevant when simulating the past sea ice changes. Nevertheless, the models that display a relatively realistic seaice cover for present-day conditions often display contrasted response for some past periods. The difference appears particularly large for the LGM in the Southern Ocean and for the summer ice extent in the Arctic for the early Holocene (and to a smaller extent for the mid-Holocene). Those periods are thus key ones to evaluate model behaviour and model physics in conditions different from those of the last decades. Paleoclimate modelling is also an invaluable tool to test hypotheses that could explain the signal recorded by proxies and thus to improve our understanding of climate dynamics. Model analyses have been focused on specific processes, such as the role of atmospheric and ocean heat transport in sea ice changes or the relative magnitude of the model response to different forcings. The studies devoted to the early Holocene provide an interesting example in this framework as both radiative forcing and freshwater discharge from the ice sheets were very different compared to now. This is thus a good target to identify the dominant processes ruling the system behaviour and to evaluate the way models represent them. Article in Journal/Newspaper Arctic Sea ice Southern Ocean DIAL@USL-B (Université Saint-Louis, Bruxelles) Arctic Southern Ocean Quaternary Science Reviews 79 191 206 |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
topic |
Sea ice Models Proxy records Benchmarking LGM Holocene Past millennium CISM: CECI 1443 |
spellingShingle |
Sea ice Models Proxy records Benchmarking LGM Holocene Past millennium CISM: CECI 1443 Goosse, Hugues Roche, D.M. Mairesse, Aurélien Berger, M. Modelling past sea ice changes |
topic_facet |
Sea ice Models Proxy records Benchmarking LGM Holocene Past millennium CISM: CECI 1443 |
description |
A dominant characteristic of the available simulations of past sea ice changes is the strong link between the model results for modern and past climates. Nearly all the models have similar extent for preindustrial conditions and for the mid-Holocene. The models with the largest extent at Last Glacial Maximum (LGM) are also characterized by large pre-industrial values. As a consequence, the causes of model biases and of the spread of model responses identified for present-day conditions appear relevant when simulating the past sea ice changes. Nevertheless, the models that display a relatively realistic seaice cover for present-day conditions often display contrasted response for some past periods. The difference appears particularly large for the LGM in the Southern Ocean and for the summer ice extent in the Arctic for the early Holocene (and to a smaller extent for the mid-Holocene). Those periods are thus key ones to evaluate model behaviour and model physics in conditions different from those of the last decades. Paleoclimate modelling is also an invaluable tool to test hypotheses that could explain the signal recorded by proxies and thus to improve our understanding of climate dynamics. Model analyses have been focused on specific processes, such as the role of atmospheric and ocean heat transport in sea ice changes or the relative magnitude of the model response to different forcings. The studies devoted to the early Holocene provide an interesting example in this framework as both radiative forcing and freshwater discharge from the ice sheets were very different compared to now. This is thus a good target to identify the dominant processes ruling the system behaviour and to evaluate the way models represent them. |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Goosse, Hugues Roche, D.M. Mairesse, Aurélien Berger, M. |
author_facet |
Goosse, Hugues Roche, D.M. Mairesse, Aurélien Berger, M. |
author_sort |
Goosse, Hugues |
title |
Modelling past sea ice changes |
title_short |
Modelling past sea ice changes |
title_full |
Modelling past sea ice changes |
title_fullStr |
Modelling past sea ice changes |
title_full_unstemmed |
Modelling past sea ice changes |
title_sort |
modelling past sea ice changes |
publisher |
Pergamon |
publishDate |
2013 |
url |
http://hdl.handle.net/2078.1/129633 https://doi.org/10.1016/j.quascirev.2013.03.011 |
geographic |
Arctic Southern Ocean |
geographic_facet |
Arctic Southern Ocean |
genre |
Arctic Sea ice Southern Ocean |
genre_facet |
Arctic Sea ice Southern Ocean |
op_source |
Quaternary Science Reviews, , no.n/, p. 1-16 (2013) |
op_relation |
boreal:129633 http://hdl.handle.net/2078.1/129633 doi:10.1016/j.quascirev.2013.03.011 urn:ISSN:0277-3791 urn:EISSN:1873-457X |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2013.03.011 |
container_title |
Quaternary Science Reviews |
container_volume |
79 |
container_start_page |
191 |
op_container_end_page |
206 |
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1798842372579131392 |