Rapid loss of firn pore space accelerates 21st century Greenland mass loss
peer reviewed Mass loss from the two major ice sheets and their contribution to global sea level rise is accelerating. In Antarctica, mass loss is dominated by increased flow velocities of outlet glaciers, following the thinning or disintegration of coastal ice shelves into which they flow. In contr...
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Online Access: | https://orbi.uliege.be/handle/2268/150085 https://orbi.uliege.be/bitstream/2268/150085/1/grl50490.pdf https://doi.org/10.1002/grl.50490 |
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ftorbi:oai:orbi.ulg.ac.be:2268/150085 2024-04-21T07:49:12+00:00 Rapid loss of firn pore space accelerates 21st century Greenland mass loss van Angelen, J. Lenaerts, J. van den Broeke, M. Fettweis, Xavier van Meijgaard, E. 2013-05-23 https://orbi.uliege.be/handle/2268/150085 https://orbi.uliege.be/bitstream/2268/150085/1/grl50490.pdf https://doi.org/10.1002/grl.50490 en eng American Geophysical Union info:eu-repo/grantAgreement/EC/FP7/226375 http://onlinelibrary.wiley.com/doi/10.1002/grl.50490/abstract urn:issn:0094-8276 urn:issn:1944-8007 https://orbi.uliege.be/handle/2268/150085 info:hdl:2268/150085 https://orbi.uliege.be/bitstream/2268/150085/1/grl50490.pdf doi:10.1002/grl.50490 scopus-id:2-s2.0-84879900646 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Geophysical Research Letters, 40, 1-5 (2013-05-23) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2013 ftorbi https://doi.org/10.1002/grl.50490 2024-03-27T14:53:33Z peer reviewed Mass loss from the two major ice sheets and their contribution to global sea level rise is accelerating. In Antarctica, mass loss is dominated by increased flow velocities of outlet glaciers, following the thinning or disintegration of coastal ice shelves into which they flow. In contrast, ∼55% of post‒1992 Greenland ice sheet (GrIS) mass loss is accounted for by surface processes, notably increased meltwater runoff. A subtle process in the surface mass balance of the GrIS is the retention and refreezing of meltwater, currently preventing ∼40% of the meltwater to reach the ocean. Here we force a high‒resolution atmosphere/snow model with a mid‒range warming scenario (RCP4.5, 1970–2100), to show that rapid loss of firn pore space, by >50% at the end of the 21st century, quickly reduces this refreezing buffer. As a result, GrIS surface mass loss accelerates throughout the 21st century and its contribution to global sea level rise increases to 1.7 ±0.5 mm yr−1, more than four times the current value. Article in Journal/Newspaper Antarc* Antarctica Greenland Ice Sheet Ice Shelves University of Liège: ORBi (Open Repository and Bibliography) Geophysical Research Letters 40 10 2109 2113 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique van Angelen, J. Lenaerts, J. van den Broeke, M. Fettweis, Xavier van Meijgaard, E. Rapid loss of firn pore space accelerates 21st century Greenland mass loss |
topic_facet |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed Mass loss from the two major ice sheets and their contribution to global sea level rise is accelerating. In Antarctica, mass loss is dominated by increased flow velocities of outlet glaciers, following the thinning or disintegration of coastal ice shelves into which they flow. In contrast, ∼55% of post‒1992 Greenland ice sheet (GrIS) mass loss is accounted for by surface processes, notably increased meltwater runoff. A subtle process in the surface mass balance of the GrIS is the retention and refreezing of meltwater, currently preventing ∼40% of the meltwater to reach the ocean. Here we force a high‒resolution atmosphere/snow model with a mid‒range warming scenario (RCP4.5, 1970–2100), to show that rapid loss of firn pore space, by >50% at the end of the 21st century, quickly reduces this refreezing buffer. As a result, GrIS surface mass loss accelerates throughout the 21st century and its contribution to global sea level rise increases to 1.7 ±0.5 mm yr−1, more than four times the current value. |
format |
Article in Journal/Newspaper |
author |
van Angelen, J. Lenaerts, J. van den Broeke, M. Fettweis, Xavier van Meijgaard, E. |
author_facet |
van Angelen, J. Lenaerts, J. van den Broeke, M. Fettweis, Xavier van Meijgaard, E. |
author_sort |
van Angelen, J. |
title |
Rapid loss of firn pore space accelerates 21st century Greenland mass loss |
title_short |
Rapid loss of firn pore space accelerates 21st century Greenland mass loss |
title_full |
Rapid loss of firn pore space accelerates 21st century Greenland mass loss |
title_fullStr |
Rapid loss of firn pore space accelerates 21st century Greenland mass loss |
title_full_unstemmed |
Rapid loss of firn pore space accelerates 21st century Greenland mass loss |
title_sort |
rapid loss of firn pore space accelerates 21st century greenland mass loss |
publisher |
American Geophysical Union |
publishDate |
2013 |
url |
https://orbi.uliege.be/handle/2268/150085 https://orbi.uliege.be/bitstream/2268/150085/1/grl50490.pdf https://doi.org/10.1002/grl.50490 |
genre |
Antarc* Antarctica Greenland Ice Sheet Ice Shelves |
genre_facet |
Antarc* Antarctica Greenland Ice Sheet Ice Shelves |
op_source |
Geophysical Research Letters, 40, 1-5 (2013-05-23) |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/226375 http://onlinelibrary.wiley.com/doi/10.1002/grl.50490/abstract urn:issn:0094-8276 urn:issn:1944-8007 https://orbi.uliege.be/handle/2268/150085 info:hdl:2268/150085 https://orbi.uliege.be/bitstream/2268/150085/1/grl50490.pdf doi:10.1002/grl.50490 scopus-id:2-s2.0-84879900646 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/grl.50490 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
10 |
container_start_page |
2109 |
op_container_end_page |
2113 |
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1796931398403096576 |