Greenland's contribution to global sea-level rise by the end of the 21st century
The Greenland ice sheet holds enough water to raise the global sea level with ∼7 m. Over the last few decades, observations manifest a substantial increase of the mass loss of this ice sheet. Both enhanced melting and increase of the dynamical discharge, associated with calving at the outlet-glacier...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/202694 2023-12-03T10:23:02+01:00 Greenland's contribution to global sea-level rise by the end of the 21st century Graversen, R. G. Drijfhout, S. Hazeleger, W. van de Wal, R.S.W. Bintanja, R. Helsen, M. Marine and Atmospheric Research Dep Natuurkunde 2011 application/pdf https://dspace.library.uu.nl/handle/1874/202694 en eng 0930-7575 https://dspace.library.uu.nl/handle/1874/202694 info:eu-repo/semantics/OpenAccess Sea-level-rise projection Greenland ice sheet Outlet glacier Ice-sheet modeling Article 2011 ftunivutrecht 2023-11-08T23:11:12Z The Greenland ice sheet holds enough water to raise the global sea level with ∼7 m. Over the last few decades, observations manifest a substantial increase of the mass loss of this ice sheet. Both enhanced melting and increase of the dynamical discharge, associated with calving at the outlet-glacier fronts, are contributing to the mass imbalance. Using a dynamical and thermodynamical ice-sheet model, and taking into account speed up of outlet glaciers, we estimate Greenland's contribution to the 21st-century global sea-level rise and the uncertainty of this estimate. Boundary fields of temperature and precipitation extracted from coupled climate-model projections used for the IPCC Fourth Assessment Report, are applied to the ice-sheet model. We implement a simple parameterization for increased flow of outlet glaciers, which decreases the bias of the modeled present-day surface height. It also allows for taking into account the observed recent increase in dynamical discharge, and it can be used for future projections associated with outlet-glacier speed up. Greenland contributes 0-17 cm to global sea-level rise by the end of the 21st century. This range includes the uncertainties in climate-model projections, the uncertainty associated with scenarios of greenhouse-gas emissions, as well as the uncertainties in future outlet-glacier discharge. In addition, the range takes into account the uncertainty of the ice-sheet model and its boundary fields Article in Journal/Newspaper glacier Greenland Ice Sheet Utrecht University Repository Greenland |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Sea-level-rise projection Greenland ice sheet Outlet glacier Ice-sheet modeling |
spellingShingle |
Sea-level-rise projection Greenland ice sheet Outlet glacier Ice-sheet modeling Graversen, R. G. Drijfhout, S. Hazeleger, W. van de Wal, R.S.W. Bintanja, R. Helsen, M. Greenland's contribution to global sea-level rise by the end of the 21st century |
topic_facet |
Sea-level-rise projection Greenland ice sheet Outlet glacier Ice-sheet modeling |
description |
The Greenland ice sheet holds enough water to raise the global sea level with ∼7 m. Over the last few decades, observations manifest a substantial increase of the mass loss of this ice sheet. Both enhanced melting and increase of the dynamical discharge, associated with calving at the outlet-glacier fronts, are contributing to the mass imbalance. Using a dynamical and thermodynamical ice-sheet model, and taking into account speed up of outlet glaciers, we estimate Greenland's contribution to the 21st-century global sea-level rise and the uncertainty of this estimate. Boundary fields of temperature and precipitation extracted from coupled climate-model projections used for the IPCC Fourth Assessment Report, are applied to the ice-sheet model. We implement a simple parameterization for increased flow of outlet glaciers, which decreases the bias of the modeled present-day surface height. It also allows for taking into account the observed recent increase in dynamical discharge, and it can be used for future projections associated with outlet-glacier speed up. Greenland contributes 0-17 cm to global sea-level rise by the end of the 21st century. This range includes the uncertainties in climate-model projections, the uncertainty associated with scenarios of greenhouse-gas emissions, as well as the uncertainties in future outlet-glacier discharge. In addition, the range takes into account the uncertainty of the ice-sheet model and its boundary fields |
author2 |
Marine and Atmospheric Research Dep Natuurkunde |
format |
Article in Journal/Newspaper |
author |
Graversen, R. G. Drijfhout, S. Hazeleger, W. van de Wal, R.S.W. Bintanja, R. Helsen, M. |
author_facet |
Graversen, R. G. Drijfhout, S. Hazeleger, W. van de Wal, R.S.W. Bintanja, R. Helsen, M. |
author_sort |
Graversen, R. G. |
title |
Greenland's contribution to global sea-level rise by the end of the 21st century |
title_short |
Greenland's contribution to global sea-level rise by the end of the 21st century |
title_full |
Greenland's contribution to global sea-level rise by the end of the 21st century |
title_fullStr |
Greenland's contribution to global sea-level rise by the end of the 21st century |
title_full_unstemmed |
Greenland's contribution to global sea-level rise by the end of the 21st century |
title_sort |
greenland's contribution to global sea-level rise by the end of the 21st century |
publishDate |
2011 |
url |
https://dspace.library.uu.nl/handle/1874/202694 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_relation |
0930-7575 https://dspace.library.uu.nl/handle/1874/202694 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1784271073464811520 |