The sensitivity of Northern Hemisphere ice sheets to atmospheric forcing during the last glacial cycle using PMIP3 models
The evolution of Northern Hemisphere ice sheets through the last glacial cycle is simulated with the glacial index method by using the climate forcing from one General Circulation Model, COSMOS. By comparing the simulated results to geological reconstructions, we first show that the modelled climate...
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Cambridge University Press
2019
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ftdoajarticles:oai:doaj.org/article:2624c2e9edad45c2b01688f375a65d77 2023-05-15T16:39:52+02:00 The sensitivity of Northern Hemisphere ice sheets to atmospheric forcing during the last glacial cycle using PMIP3 models LU NIU GERRIT LOHMANN SEBASTIAN HINCK EVAN J. GOWAN UTA KREBS-KANZOW 2019-08-01T00:00:00Z https://doi.org/10.1017/jog.2019.42 https://doaj.org/article/2624c2e9edad45c2b01688f375a65d77 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S002214301900042X/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2019.42 0022-1430 1727-5652 https://doaj.org/article/2624c2e9edad45c2b01688f375a65d77 Journal of Glaciology, Vol 65, Pp 645-661 (2019) Ice/atmosphere interactions ice and climate ice-sheet modelling paleoclimate Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2019 ftdoajarticles https://doi.org/10.1017/jog.2019.42 2023-03-12T01:30:57Z The evolution of Northern Hemisphere ice sheets through the last glacial cycle is simulated with the glacial index method by using the climate forcing from one General Circulation Model, COSMOS. By comparing the simulated results to geological reconstructions, we first show that the modelled climate is capable of capturing the main features of the ice-sheet evolution. However, large deviations exist, likely due to the absence of nonlinear interactions between ice sheet and other climate components. The model uncertainties of the climate forcing are examined using the output from nine climate models from the Paleoclimate Modelling Intercomparison Project Phase III. The results show a large variability in simulated ice sheets between the different models. We find that the ice-sheet extent pattern resembles summer surface air temperature pattern at the Last Glacial Maximum, confirming the dominant role of surface ablation process for high-latitude Northern Hemisphere ice sheets. This study shows the importance of the upper boundary condition for ice-sheet modelling, and implies that careful constraints on climate output is essential for simulating realistic glacial Northern Hemisphere ice sheets. Article in Journal/Newspaper Ice Sheet Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 65 252 645 661 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ice/atmosphere interactions ice and climate ice-sheet modelling paleoclimate Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Ice/atmosphere interactions ice and climate ice-sheet modelling paleoclimate Environmental sciences GE1-350 Meteorology. Climatology QC851-999 LU NIU GERRIT LOHMANN SEBASTIAN HINCK EVAN J. GOWAN UTA KREBS-KANZOW The sensitivity of Northern Hemisphere ice sheets to atmospheric forcing during the last glacial cycle using PMIP3 models |
topic_facet |
Ice/atmosphere interactions ice and climate ice-sheet modelling paleoclimate Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
The evolution of Northern Hemisphere ice sheets through the last glacial cycle is simulated with the glacial index method by using the climate forcing from one General Circulation Model, COSMOS. By comparing the simulated results to geological reconstructions, we first show that the modelled climate is capable of capturing the main features of the ice-sheet evolution. However, large deviations exist, likely due to the absence of nonlinear interactions between ice sheet and other climate components. The model uncertainties of the climate forcing are examined using the output from nine climate models from the Paleoclimate Modelling Intercomparison Project Phase III. The results show a large variability in simulated ice sheets between the different models. We find that the ice-sheet extent pattern resembles summer surface air temperature pattern at the Last Glacial Maximum, confirming the dominant role of surface ablation process for high-latitude Northern Hemisphere ice sheets. This study shows the importance of the upper boundary condition for ice-sheet modelling, and implies that careful constraints on climate output is essential for simulating realistic glacial Northern Hemisphere ice sheets. |
format |
Article in Journal/Newspaper |
author |
LU NIU GERRIT LOHMANN SEBASTIAN HINCK EVAN J. GOWAN UTA KREBS-KANZOW |
author_facet |
LU NIU GERRIT LOHMANN SEBASTIAN HINCK EVAN J. GOWAN UTA KREBS-KANZOW |
author_sort |
LU NIU |
title |
The sensitivity of Northern Hemisphere ice sheets to atmospheric forcing during the last glacial cycle using PMIP3 models |
title_short |
The sensitivity of Northern Hemisphere ice sheets to atmospheric forcing during the last glacial cycle using PMIP3 models |
title_full |
The sensitivity of Northern Hemisphere ice sheets to atmospheric forcing during the last glacial cycle using PMIP3 models |
title_fullStr |
The sensitivity of Northern Hemisphere ice sheets to atmospheric forcing during the last glacial cycle using PMIP3 models |
title_full_unstemmed |
The sensitivity of Northern Hemisphere ice sheets to atmospheric forcing during the last glacial cycle using PMIP3 models |
title_sort |
sensitivity of northern hemisphere ice sheets to atmospheric forcing during the last glacial cycle using pmip3 models |
publisher |
Cambridge University Press |
publishDate |
2019 |
url |
https://doi.org/10.1017/jog.2019.42 https://doaj.org/article/2624c2e9edad45c2b01688f375a65d77 |
genre |
Ice Sheet Journal of Glaciology |
genre_facet |
Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 65, Pp 645-661 (2019) |
op_relation |
https://www.cambridge.org/core/product/identifier/S002214301900042X/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2019.42 0022-1430 1727-5652 https://doaj.org/article/2624c2e9edad45c2b01688f375a65d77 |
op_doi |
https://doi.org/10.1017/jog.2019.42 |
container_title |
Journal of Glaciology |
container_volume |
65 |
container_issue |
252 |
container_start_page |
645 |
op_container_end_page |
661 |
_version_ |
1766030209904017408 |