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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ftsouthampton:oai:eprints.soton.ac.uk:348352 2023-07-30T04:03:37+02:00 Greenland’s contribution to global sea-level rise by the end of the 21st century Graversen, Rune G. Drijfhout, Sybren Hazeleger, Wilco Wal, Roderik Bintanja, Richard Helsen, Michiel 2011-10 https://eprints.soton.ac.uk/348352/ unknown Graversen, Rune G., Drijfhout, Sybren, Hazeleger, Wilco, Wal, Roderik, Bintanja, Richard and Helsen, Michiel (2011) Greenland’s contribution to global sea-level rise by the end of the 21st century. Climate Dynamics, 37 (7-8), 1427-1442. (doi:10.1007/s00382-010-0918-8 <http://dx.doi.org/10.1007/s00382-010-0918-8>). Article PeerReviewed 2011 ftsouthampton https://doi.org/10.1007/s00382-010-0918-8 2023-07-09T21:44:12Z 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 icesheet 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 University of Southampton: e-Prints Soton Greenland Climate Dynamics 37 7-8 1427 1442 |
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Open Polar |
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University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
unknown |
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 icesheet 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. |
format |
Article in Journal/Newspaper |
author |
Graversen, Rune G. Drijfhout, Sybren Hazeleger, Wilco Wal, Roderik Bintanja, Richard Helsen, Michiel |
spellingShingle |
Graversen, Rune G. Drijfhout, Sybren Hazeleger, Wilco Wal, Roderik Bintanja, Richard Helsen, Michiel Greenland’s contribution to global sea-level rise by the end of the 21st century |
author_facet |
Graversen, Rune G. Drijfhout, Sybren Hazeleger, Wilco Wal, Roderik Bintanja, Richard Helsen, Michiel |
author_sort |
Graversen, Rune 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://eprints.soton.ac.uk/348352/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_relation |
Graversen, Rune G., Drijfhout, Sybren, Hazeleger, Wilco, Wal, Roderik, Bintanja, Richard and Helsen, Michiel (2011) Greenland’s contribution to global sea-level rise by the end of the 21st century. Climate Dynamics, 37 (7-8), 1427-1442. (doi:10.1007/s00382-010-0918-8 <http://dx.doi.org/10.1007/s00382-010-0918-8>). |
op_doi |
https://doi.org/10.1007/s00382-010-0918-8 |
container_title |
Climate Dynamics |
container_volume |
37 |
container_issue |
7-8 |
container_start_page |
1427 |
op_container_end_page |
1442 |
_version_ |
1772814645908733952 |