Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR
peer reviewed Results from a 28-year simulation (1979–2006) over the Greenland ice sheet (GrIS) reveal an increase of solid precipitation (+0.4±2.5 km3 yr−2) and run-off (+7.9±3.3 km3 yr−2) of surface meltwater. The net effect of these competing factors is a significant Surface Mass Balance (SMB) lo...
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Copernicus
2007
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Online Access: | https://orbi.uliege.be/handle/2268/16466 https://orbi.uliege.be/bitstream/2268/16466/1/tc-1-21-2007.pdf https://doi.org/10.5194/tc-1-21-2007 |
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ftorbi:oai:orbi.ulg.ac.be:2268/16466 2024-04-21T08:03:27+00:00 Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR Fettweis, Xavier 2007 https://orbi.uliege.be/handle/2268/16466 https://orbi.uliege.be/bitstream/2268/16466/1/tc-1-21-2007.pdf https://doi.org/10.5194/tc-1-21-2007 en eng Copernicus http://www.the-cryosphere.net/1/21/2007/tc-1-21-2007.html urn:issn:1994-0416 urn:issn:1994-0424 https://orbi.uliege.be/handle/2268/16466 info:hdl:2268/16466 https://orbi.uliege.be/bitstream/2268/16466/1/tc-1-21-2007.pdf doi:10.5194/tc-1-21-2007 scopus-id:2-s2.0-56749096084 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess The Cryosphere, 1, 21-40 (2007) Greenland Surface Mass Balance Modelisation 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 2007 ftorbi https://doi.org/10.5194/tc-1-21-2007 2024-03-27T14:58:15Z peer reviewed Results from a 28-year simulation (1979–2006) over the Greenland ice sheet (GrIS) reveal an increase of solid precipitation (+0.4±2.5 km3 yr−2) and run-off (+7.9±3.3 km3 yr−2) of surface meltwater. The net effect of these competing factors is a significant Surface Mass Balance (SMB) loss of −7.2±5.1 km3 yr−2. The contribution of changes in the net water vapour flux (+0.02±0.09 km3 yr−2) and rainfall (+0.2±0.2 km3 yr−2) to the SMB variability is negligible. The meltwater supply has increased because the GrIS surface has been warming up +2.4°C since 1979. Sensible heat flux, latent heat flux and net solar radiation have not varied significantly over the last three decades. However, the simulated downward infrared flux has increased by 9.3 W m−2 since 1979. The natural climate variability (e.g. the North Atlantic Oscillation) does not explain these changes. The recent global warming, due to the greenhouse gas concentration increase induced by human activities, could be a cause of these changes. The doubling of surface meltwater flux into the ocean over the period 1979–2006 suggests that the overall ice sheet mass balance has been increasingly negative, given the likely meltwater-induced acceleration of outlet glaciers. This study suggests that increased melting overshadows over an increased accumulation in a warming scenario and that the GrIS is likely to keep losing mass in the future. An enduring GrIS melting will probably affect in the future an certain effect on the stability of the thermohaline circulation and the global sea level rise. Article in Journal/Newspaper Greenland Ice Sheet North Atlantic North Atlantic oscillation The Cryosphere University of Liège: ORBi (Open Repository and Bibliography) The Cryosphere 1 1 21 40 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Greenland Surface Mass Balance Modelisation Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Greenland Surface Mass Balance Modelisation Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Fettweis, Xavier Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR |
topic_facet |
Greenland Surface Mass Balance Modelisation 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 Results from a 28-year simulation (1979–2006) over the Greenland ice sheet (GrIS) reveal an increase of solid precipitation (+0.4±2.5 km3 yr−2) and run-off (+7.9±3.3 km3 yr−2) of surface meltwater. The net effect of these competing factors is a significant Surface Mass Balance (SMB) loss of −7.2±5.1 km3 yr−2. The contribution of changes in the net water vapour flux (+0.02±0.09 km3 yr−2) and rainfall (+0.2±0.2 km3 yr−2) to the SMB variability is negligible. The meltwater supply has increased because the GrIS surface has been warming up +2.4°C since 1979. Sensible heat flux, latent heat flux and net solar radiation have not varied significantly over the last three decades. However, the simulated downward infrared flux has increased by 9.3 W m−2 since 1979. The natural climate variability (e.g. the North Atlantic Oscillation) does not explain these changes. The recent global warming, due to the greenhouse gas concentration increase induced by human activities, could be a cause of these changes. The doubling of surface meltwater flux into the ocean over the period 1979–2006 suggests that the overall ice sheet mass balance has been increasingly negative, given the likely meltwater-induced acceleration of outlet glaciers. This study suggests that increased melting overshadows over an increased accumulation in a warming scenario and that the GrIS is likely to keep losing mass in the future. An enduring GrIS melting will probably affect in the future an certain effect on the stability of the thermohaline circulation and the global sea level rise. |
format |
Article in Journal/Newspaper |
author |
Fettweis, Xavier |
author_facet |
Fettweis, Xavier |
author_sort |
Fettweis, Xavier |
title |
Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR |
title_short |
Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR |
title_full |
Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR |
title_fullStr |
Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR |
title_full_unstemmed |
Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR |
title_sort |
reconstruction of the 1979–2006 greenland ice sheet surface mass balance using the regional climate model mar |
publisher |
Copernicus |
publishDate |
2007 |
url |
https://orbi.uliege.be/handle/2268/16466 https://orbi.uliege.be/bitstream/2268/16466/1/tc-1-21-2007.pdf https://doi.org/10.5194/tc-1-21-2007 |
genre |
Greenland Ice Sheet North Atlantic North Atlantic oscillation The Cryosphere |
genre_facet |
Greenland Ice Sheet North Atlantic North Atlantic oscillation The Cryosphere |
op_source |
The Cryosphere, 1, 21-40 (2007) |
op_relation |
http://www.the-cryosphere.net/1/21/2007/tc-1-21-2007.html urn:issn:1994-0416 urn:issn:1994-0424 https://orbi.uliege.be/handle/2268/16466 info:hdl:2268/16466 https://orbi.uliege.be/bitstream/2268/16466/1/tc-1-21-2007.pdf doi:10.5194/tc-1-21-2007 scopus-id:2-s2.0-56749096084 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-1-21-2007 |
container_title |
The Cryosphere |
container_volume |
1 |
container_issue |
1 |
container_start_page |
21 |
op_container_end_page |
40 |
_version_ |
1796943294481039360 |