Ice flux evolution in fast flowing areas of the Greenland ice sheet over the 20th and 21st centuries
ABSTRACT This study investigates the evolution of Greenland ice sheet flux focusing on five of the main fast flowing regions (Petermann glacier, North East Greenland Ice Stream, Kangerdlugssuaq glacier, Helheim glacier and Jakobshavn glacier) in response to 20th and 21st century climate change. A hy...
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Online Access: | http://dx.doi.org/10.1017/jog.2017.12 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143017000120 |
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crcambridgeupr:10.1017/jog.2017.12 2024-09-15T18:04:19+00:00 Ice flux evolution in fast flowing areas of the Greenland ice sheet over the 20th and 21st centuries PEANO, DANIELE COLLEONI, FLORENCE QUIQUET, AURÉLIEN MASINA, SIMONA 2017 http://dx.doi.org/10.1017/jog.2017.12 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143017000120 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by-nc-sa/4.0/ Journal of Glaciology volume 63, issue 239, page 499-513 ISSN 0022-1430 1727-5652 journal-article 2017 crcambridgeupr https://doi.org/10.1017/jog.2017.12 2024-07-24T04:04:10Z ABSTRACT This study investigates the evolution of Greenland ice sheet flux focusing on five of the main fast flowing regions (Petermann glacier, North East Greenland Ice Stream, Kangerdlugssuaq glacier, Helheim glacier and Jakobshavn glacier) in response to 20th and 21st century climate change. A hybrid (shallow ice and shallow shelf) ice-sheet model (ISM) is forced with the combined outputs of a set of seven CMIP5 models and the regional climate model MAR. The ISM simulates the present-day ice velocity pattern, topography and surface mass balance (SMB) in good agreement with observations. Except for the Kangerdlugssuaq glacier, over the 21st century all the fast-flowing areas have exhibited a decrease in ice flux as a result of a negative SMB rather than dynamical changes. Only the fronts of Kangerdlugssuaq and Helheim glaciers have shown an interannual variability driven by dynamical rather than climate changes. Finally, the results predict a substantial inland ice margin retreat by the end of the 21st century, especially along the northern coasts. Article in Journal/Newspaper East Greenland glacier Greenland Ice Sheet Jakobshavn Journal of Glaciology Petermann glacier Cambridge University Press Journal of Glaciology 63 239 499 513 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
ABSTRACT This study investigates the evolution of Greenland ice sheet flux focusing on five of the main fast flowing regions (Petermann glacier, North East Greenland Ice Stream, Kangerdlugssuaq glacier, Helheim glacier and Jakobshavn glacier) in response to 20th and 21st century climate change. A hybrid (shallow ice and shallow shelf) ice-sheet model (ISM) is forced with the combined outputs of a set of seven CMIP5 models and the regional climate model MAR. The ISM simulates the present-day ice velocity pattern, topography and surface mass balance (SMB) in good agreement with observations. Except for the Kangerdlugssuaq glacier, over the 21st century all the fast-flowing areas have exhibited a decrease in ice flux as a result of a negative SMB rather than dynamical changes. Only the fronts of Kangerdlugssuaq and Helheim glaciers have shown an interannual variability driven by dynamical rather than climate changes. Finally, the results predict a substantial inland ice margin retreat by the end of the 21st century, especially along the northern coasts. |
format |
Article in Journal/Newspaper |
author |
PEANO, DANIELE COLLEONI, FLORENCE QUIQUET, AURÉLIEN MASINA, SIMONA |
spellingShingle |
PEANO, DANIELE COLLEONI, FLORENCE QUIQUET, AURÉLIEN MASINA, SIMONA Ice flux evolution in fast flowing areas of the Greenland ice sheet over the 20th and 21st centuries |
author_facet |
PEANO, DANIELE COLLEONI, FLORENCE QUIQUET, AURÉLIEN MASINA, SIMONA |
author_sort |
PEANO, DANIELE |
title |
Ice flux evolution in fast flowing areas of the Greenland ice sheet over the 20th and 21st centuries |
title_short |
Ice flux evolution in fast flowing areas of the Greenland ice sheet over the 20th and 21st centuries |
title_full |
Ice flux evolution in fast flowing areas of the Greenland ice sheet over the 20th and 21st centuries |
title_fullStr |
Ice flux evolution in fast flowing areas of the Greenland ice sheet over the 20th and 21st centuries |
title_full_unstemmed |
Ice flux evolution in fast flowing areas of the Greenland ice sheet over the 20th and 21st centuries |
title_sort |
ice flux evolution in fast flowing areas of the greenland ice sheet over the 20th and 21st centuries |
publisher |
Cambridge University Press (CUP) |
publishDate |
2017 |
url |
http://dx.doi.org/10.1017/jog.2017.12 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143017000120 |
genre |
East Greenland glacier Greenland Ice Sheet Jakobshavn Journal of Glaciology Petermann glacier |
genre_facet |
East Greenland glacier Greenland Ice Sheet Jakobshavn Journal of Glaciology Petermann glacier |
op_source |
Journal of Glaciology volume 63, issue 239, page 499-513 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2017.12 |
container_title |
Journal of Glaciology |
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63 |
container_issue |
239 |
container_start_page |
499 |
op_container_end_page |
513 |
_version_ |
1810441812595179520 |