Ice flux evolution in fast flowing areas of the Greenland ice sheet over the 20th and 21st centuries
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 (sha...
Published in: | Journal of Glaciology |
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Language: | English |
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Online Access: | http://hdl.handle.net/2122/11834 https://doi.org/10.1017/jog.2017.12 |
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ftingv:oai:www.earth-prints.org:2122/11834 2023-05-15T16:03:47+02:00 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 #PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia 2017-03-28 http://hdl.handle.net/2122/11834 https://doi.org/10.1017/jog.2017.12 en eng Journal of Glaciology /63 (2017) http://hdl.handle.net/2122/11834 doi:10.1017/jog.2017.12 restricted article 2017 ftingv https://doi.org/10.1017/jog.2017.12 2022-07-29T06:07:32Z 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. Published 499 – 513 4A. Oceanografia e clima 5A. Paleoclima e ricerche polari JCR Journal Article in Journal/Newspaper East Greenland glacier Greenland Ice Sheet Jakobshavn Journal of Glaciology Petermann glacier Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Greenland Journal of Glaciology 63 239 499 513 |
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Open Polar |
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Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
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ftingv |
language |
English |
description |
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. Published 499 – 513 4A. Oceanografia e clima 5A. Paleoclima e ricerche polari JCR Journal |
author2 |
#PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia |
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 |
publishDate |
2017 |
url |
http://hdl.handle.net/2122/11834 https://doi.org/10.1017/jog.2017.12 |
geographic |
Greenland |
geographic_facet |
Greenland |
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_relation |
Journal of Glaciology /63 (2017) http://hdl.handle.net/2122/11834 doi:10.1017/jog.2017.12 |
op_rights |
restricted |
op_doi |
https://doi.org/10.1017/jog.2017.12 |
container_title |
Journal of Glaciology |
container_volume |
63 |
container_issue |
239 |
container_start_page |
499 |
op_container_end_page |
513 |
_version_ |
1766399468757843968 |