The future sea-level rise contribution of Greenland’s glaciers and ice caps
We calculate the future sea-level rise contribution from the surface mass balance of all of Greenland's glaciers and ice caps (GICs, ~90 000 km2) using a simplified energy balance model which is driven by three future climate scenarios from the regional climate models HIRHAM5, RACMO2 and MAR. G...
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ftunivzuerich:oai:www.zora.uzh.ch:126155 2024-09-09T19:41:20+00:00 The future sea-level rise contribution of Greenland’s glaciers and ice caps Machguth, H Rastner, P Bolch, T Mölg, N Sørensen, L Sandberg Aðalgeirsdottir, G van Angelen, J H van den Broeke, M R Fettweis, X 2013 application/pdf https://www.zora.uzh.ch/id/eprint/126155/ https://www.zora.uzh.ch/id/eprint/126155/1/machguth_ERL_2013.pdf https://doi.org/10.5167/uzh-126155 https://doi.org/10.1088/1748-9326/8/2/025005 eng eng IOP Publishing https://www.zora.uzh.ch/id/eprint/126155/1/machguth_ERL_2013.pdf doi:10.5167/uzh-126155 doi:10.1088/1748-9326/8/2/025005 urn:issn:1748-9326 info:eu-repo/semantics/openAccess Creative Commons: Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0) http://creativecommons.org/licenses/by-nc-sa/3.0/ Machguth, H; Rastner, P; Bolch, T; Mölg, N; Sørensen, L Sandberg; Aðalgeirsdottir, G; van Angelen, J H; van den Broeke, M R; Fettweis, X (2013). The future sea-level rise contribution of Greenland’s glaciers and ice caps. Environmental Research Letters, 8(2):025005. Institute of Geography 910 Geography & travel Journal Article PeerReviewed info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2013 ftunivzuerich https://doi.org/10.5167/uzh-12615510.1088/1748-9326/8/2/025005 2024-08-21T00:19:55Z We calculate the future sea-level rise contribution from the surface mass balance of all of Greenland's glaciers and ice caps (GICs, ~90 000 km2) using a simplified energy balance model which is driven by three future climate scenarios from the regional climate models HIRHAM5, RACMO2 and MAR. Glacier extent and surface elevation are modified during the mass balance model runs according to a glacier retreat parameterization. Mass balance and glacier surface change are both calculated on a 250 m resolution digital elevation model yielding a high level of detail and ensuring that important feedback mechanisms are considered. The mass loss of all GICs by 2098 is calculated to be 2016 ± 129 Gt (HIRHAM5 forcing), 2584 ± 109 Gt (RACMO2) and 3907 ± 108 Gt (MAR). This corresponds to a total contribution to sea-level rise of 5.8 ± 0.4, 7.4 ± 0.3 and 11.2 ± 0.3 mm, respectively. Sensitivity experiments suggest that mass loss could be higher by 20–30% if a strong lowering of the surface albedo were to take place in the future. It is shown that the sea-level rise contribution from the north-easterly regions of Greenland is reduced by increasing precipitation while mass loss in the southern half of Greenland is dominated by steadily decreasing summer mass balances. In addition we observe glaciers in the north-eastern part of Greenland changing their characteristics towards greater activity and mass turnover. Article in Journal/Newspaper glacier Greenland University of Zurich (UZH): ZORA (Zurich Open Repository and Archive Greenland |
institution |
Open Polar |
collection |
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
op_collection_id |
ftunivzuerich |
language |
English |
topic |
Institute of Geography 910 Geography & travel |
spellingShingle |
Institute of Geography 910 Geography & travel Machguth, H Rastner, P Bolch, T Mölg, N Sørensen, L Sandberg Aðalgeirsdottir, G van Angelen, J H van den Broeke, M R Fettweis, X The future sea-level rise contribution of Greenland’s glaciers and ice caps |
topic_facet |
Institute of Geography 910 Geography & travel |
description |
We calculate the future sea-level rise contribution from the surface mass balance of all of Greenland's glaciers and ice caps (GICs, ~90 000 km2) using a simplified energy balance model which is driven by three future climate scenarios from the regional climate models HIRHAM5, RACMO2 and MAR. Glacier extent and surface elevation are modified during the mass balance model runs according to a glacier retreat parameterization. Mass balance and glacier surface change are both calculated on a 250 m resolution digital elevation model yielding a high level of detail and ensuring that important feedback mechanisms are considered. The mass loss of all GICs by 2098 is calculated to be 2016 ± 129 Gt (HIRHAM5 forcing), 2584 ± 109 Gt (RACMO2) and 3907 ± 108 Gt (MAR). This corresponds to a total contribution to sea-level rise of 5.8 ± 0.4, 7.4 ± 0.3 and 11.2 ± 0.3 mm, respectively. Sensitivity experiments suggest that mass loss could be higher by 20–30% if a strong lowering of the surface albedo were to take place in the future. It is shown that the sea-level rise contribution from the north-easterly regions of Greenland is reduced by increasing precipitation while mass loss in the southern half of Greenland is dominated by steadily decreasing summer mass balances. In addition we observe glaciers in the north-eastern part of Greenland changing their characteristics towards greater activity and mass turnover. |
format |
Article in Journal/Newspaper |
author |
Machguth, H Rastner, P Bolch, T Mölg, N Sørensen, L Sandberg Aðalgeirsdottir, G van Angelen, J H van den Broeke, M R Fettweis, X |
author_facet |
Machguth, H Rastner, P Bolch, T Mölg, N Sørensen, L Sandberg Aðalgeirsdottir, G van Angelen, J H van den Broeke, M R Fettweis, X |
author_sort |
Machguth, H |
title |
The future sea-level rise contribution of Greenland’s glaciers and ice caps |
title_short |
The future sea-level rise contribution of Greenland’s glaciers and ice caps |
title_full |
The future sea-level rise contribution of Greenland’s glaciers and ice caps |
title_fullStr |
The future sea-level rise contribution of Greenland’s glaciers and ice caps |
title_full_unstemmed |
The future sea-level rise contribution of Greenland’s glaciers and ice caps |
title_sort |
future sea-level rise contribution of greenland’s glaciers and ice caps |
publisher |
IOP Publishing |
publishDate |
2013 |
url |
https://www.zora.uzh.ch/id/eprint/126155/ https://www.zora.uzh.ch/id/eprint/126155/1/machguth_ERL_2013.pdf https://doi.org/10.5167/uzh-126155 https://doi.org/10.1088/1748-9326/8/2/025005 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland |
genre_facet |
glacier Greenland |
op_source |
Machguth, H; Rastner, P; Bolch, T; Mölg, N; Sørensen, L Sandberg; Aðalgeirsdottir, G; van Angelen, J H; van den Broeke, M R; Fettweis, X (2013). The future sea-level rise contribution of Greenland’s glaciers and ice caps. Environmental Research Letters, 8(2):025005. |
op_relation |
https://www.zora.uzh.ch/id/eprint/126155/1/machguth_ERL_2013.pdf doi:10.5167/uzh-126155 doi:10.1088/1748-9326/8/2/025005 urn:issn:1748-9326 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons: Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0) http://creativecommons.org/licenses/by-nc-sa/3.0/ |
op_doi |
https://doi.org/10.5167/uzh-12615510.1088/1748-9326/8/2/025005 |
_version_ |
1809910753736523776 |