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 km 2 ) using a simplified energy balance model which is driven by three future climate scenarios from the regional climate models HIRHAM5, RACMO2 and MAR....
Published in: | Environmental Research Letters |
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Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2013
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-future-sealevel-rise-contribution-of-greenlands-glaciers-and-ice-caps(e1a6f5ce-5e3d-43e4-a0d0-55180bc69c4b).html https://doi.org/10.1088/1748-9326/8/2/025005 http://www.scopus.com/inward/record.url?scp=84880867279&partnerID=8YFLogxK |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/e1a6f5ce-5e3d-43e4-a0d0-55180bc69c4b 2023-05-15T16:20:59+02:00 The future sea-level rise contribution of Greenland's glaciers and ice caps Machguth, H. Rastner, P. Bolch, T. Mölg, N. Sørensen, L. Sandberg Aalgeirsdottir, G. Van Angelen, J. H. Van Den Broeke, M. R. Fettweis, X. 2013-01-01 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-future-sealevel-rise-contribution-of-greenlands-glaciers-and-ice-caps(e1a6f5ce-5e3d-43e4-a0d0-55180bc69c4b).html https://doi.org/10.1088/1748-9326/8/2/025005 http://www.scopus.com/inward/record.url?scp=84880867279&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Machguth , H , Rastner , P , Bolch , T , Mölg , N , Sørensen , L S , Aalgeirsdottir , 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 , vol. 8 , no. 2 , 025005 . https://doi.org/10.1088/1748-9326/8/2/025005 climate model output glacier retreat parameterization glaciers and ice caps Greenland sea level rise contribution article 2013 ftunstandrewcris https://doi.org/10.1088/1748-9326/8/2/025005 2022-06-02T07:49:58Z 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 km 2 ) 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 Greenland Sea University of St Andrews: Research Portal Greenland Environmental Research Letters 8 2 025005 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
climate model output glacier retreat parameterization glaciers and ice caps Greenland sea level rise contribution |
spellingShingle |
climate model output glacier retreat parameterization glaciers and ice caps Greenland sea level rise contribution Machguth, H. Rastner, P. Bolch, T. Mölg, N. Sørensen, L. Sandberg Aalgeirsdottir, 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 |
climate model output glacier retreat parameterization glaciers and ice caps Greenland sea level rise contribution |
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 km 2 ) 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 Aalgeirsdottir, 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 Aalgeirsdottir, 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 |
publishDate |
2013 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-future-sealevel-rise-contribution-of-greenlands-glaciers-and-ice-caps(e1a6f5ce-5e3d-43e4-a0d0-55180bc69c4b).html https://doi.org/10.1088/1748-9326/8/2/025005 http://www.scopus.com/inward/record.url?scp=84880867279&partnerID=8YFLogxK |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Greenland Sea |
genre_facet |
glacier Greenland Greenland Sea |
op_source |
Machguth , H , Rastner , P , Bolch , T , Mölg , N , Sørensen , L S , Aalgeirsdottir , 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 , vol. 8 , no. 2 , 025005 . https://doi.org/10.1088/1748-9326/8/2/025005 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1088/1748-9326/8/2/025005 |
container_title |
Environmental Research Letters |
container_volume |
8 |
container_issue |
2 |
container_start_page |
025005 |
_version_ |
1766008994681323520 |