Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR

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...

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Published in:The Cryosphere
Main Author: Fettweis, X.
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2007
Subjects:
Online Access:https://doi.org/10.5194/tc-1-21-2007
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spelling ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00032003 2023-05-15T16:28:27+02:00 Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR Fettweis, X. 2007-10 electronic https://doi.org/10.5194/tc-1-21-2007 https://noa.gwlb.de/receive/cop_mods_00032003 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031957/tc-1-21-2007.pdf https://tc.copernicus.org/articles/1/21/2007/tc-1-21-2007.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-1-21-2007 https://noa.gwlb.de/receive/cop_mods_00032003 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031957/tc-1-21-2007.pdf https://tc.copernicus.org/articles/1/21/2007/tc-1-21-2007.pdf https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2007 ftnonlinearchiv https://doi.org/10.5194/tc-1-21-2007 2022-02-08T22:46:27Z 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 Niedersächsisches Online-Archiv NOA Greenland The Cryosphere 1 1 21 40
institution Open Polar
collection Niedersächsisches Online-Archiv NOA
op_collection_id ftnonlinearchiv
language English
topic article
Verlagsveröffentlichung
spellingShingle article
Verlagsveröffentlichung
Fettweis, X.
Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR
topic_facet article
Verlagsveröffentlichung
description 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, X.
author_facet Fettweis, X.
author_sort Fettweis, X.
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 Publications
publishDate 2007
url https://doi.org/10.5194/tc-1-21-2007
https://noa.gwlb.de/receive/cop_mods_00032003
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031957/tc-1-21-2007.pdf
https://tc.copernicus.org/articles/1/21/2007/tc-1-21-2007.pdf
geographic Greenland
geographic_facet Greenland
genre Greenland
Ice Sheet
North Atlantic
North Atlantic oscillation
The Cryosphere
genre_facet Greenland
Ice Sheet
North Atlantic
North Atlantic oscillation
The Cryosphere
op_relation The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424
https://doi.org/10.5194/tc-1-21-2007
https://noa.gwlb.de/receive/cop_mods_00032003
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031957/tc-1-21-2007.pdf
https://tc.copernicus.org/articles/1/21/2007/tc-1-21-2007.pdf
op_rights https://open-access.net/
uneingeschränkt
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
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