Runoff and mass-balance simulations from the Greenland Ice Sheet at Kangerlussuaq (Søndre Strømfjord) in a 30-year perspective, 1979–2008
This study provides insights into surface mass-balance (SMB) and runoff exiting the Watson River drainage basin, Kangerlussuaq, West Greenland during a 30 year period (1978/1979–2007/2008) when the climate experienced increasing temperatures and precipitation. The 30-year simulations quantify the te...
Published in: | The Cryosphere |
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Copernicus Publications
2010
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00028797 2023-05-15T16:27:21+02:00 Runoff and mass-balance simulations from the Greenland Ice Sheet at Kangerlussuaq (Søndre Strømfjord) in a 30-year perspective, 1979–2008 Mernild, S. H. Liston, G. E. Steffen, K. van den Broeke, M. Hasholt, B. 2010-06 electronic https://doi.org/10.5194/tc-4-231-2010 https://noa.gwlb.de/receive/cop_mods_00028797 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028752/tc-4-231-2010.pdf https://tc.copernicus.org/articles/4/231/2010/tc-4-231-2010.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-4-231-2010 https://noa.gwlb.de/receive/cop_mods_00028797 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028752/tc-4-231-2010.pdf https://tc.copernicus.org/articles/4/231/2010/tc-4-231-2010.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2010 ftnonlinearchiv https://doi.org/10.5194/tc-4-231-2010 2022-02-08T22:48:00Z This study provides insights into surface mass-balance (SMB) and runoff exiting the Watson River drainage basin, Kangerlussuaq, West Greenland during a 30 year period (1978/1979–2007/2008) when the climate experienced increasing temperatures and precipitation. The 30-year simulations quantify the terrestrial freshwater output from part of the Greenland Ice Sheet (GrIS) and the land between the GrIS and the ocean, in the context of global warming and increasing GrIS surface melt. We used a snow-evolution modeling system (SnowModel) to simulate the winter accumulation and summer ablation processes, including runoff and SMB, of the ice sheet: indicating that the simulated equilibrium line altitude (ELA) was in accordance with independent observations. To a large extent, the SMB fluctuations could be explained by changes in net precipitation (precipitation minus evaporation and sublimation), with 8 out of 30 years having negative SMB, mainly because of relatively low annual net precipitation. The overall trend in net precipitation and runoff increased significantly, while SMB increased insignificantly throughout the simulation period, leading to enhanced precipitation of 0.59 km3 w.eq. (or ~60%), runoff of 0.43 km3 w.eq. (or ~55%), and SMB of 0.16 km3 w.eq. (or ~85%). Runoff rose on average from 0.80 km3 w.eq. in 1978/1979 to 1.23 km3 w.eq. in 2007/2008. The GrIS satellite-derived melt-extent increased significantly, and the melting intensification occurred simultaneously with the increase in local Kangerlussuaq runoff, indicating that satellite data can be used as a proxy (r2=0.64) for runoff from the Kangerlussuaq drainage area. Article in Journal/Newspaper Greenland Ice Sheet Kangerlussuaq Søndre strømfjord The Cryosphere Niedersächsisches Online-Archiv NOA Ela ENVELOPE(9.642,9.642,63.170,63.170) Greenland Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) The Cryosphere 4 2 231 242 |
institution |
Open Polar |
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Niedersächsisches Online-Archiv NOA |
op_collection_id |
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language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Mernild, S. H. Liston, G. E. Steffen, K. van den Broeke, M. Hasholt, B. Runoff and mass-balance simulations from the Greenland Ice Sheet at Kangerlussuaq (Søndre Strømfjord) in a 30-year perspective, 1979–2008 |
topic_facet |
article Verlagsveröffentlichung |
description |
This study provides insights into surface mass-balance (SMB) and runoff exiting the Watson River drainage basin, Kangerlussuaq, West Greenland during a 30 year period (1978/1979–2007/2008) when the climate experienced increasing temperatures and precipitation. The 30-year simulations quantify the terrestrial freshwater output from part of the Greenland Ice Sheet (GrIS) and the land between the GrIS and the ocean, in the context of global warming and increasing GrIS surface melt. We used a snow-evolution modeling system (SnowModel) to simulate the winter accumulation and summer ablation processes, including runoff and SMB, of the ice sheet: indicating that the simulated equilibrium line altitude (ELA) was in accordance with independent observations. To a large extent, the SMB fluctuations could be explained by changes in net precipitation (precipitation minus evaporation and sublimation), with 8 out of 30 years having negative SMB, mainly because of relatively low annual net precipitation. The overall trend in net precipitation and runoff increased significantly, while SMB increased insignificantly throughout the simulation period, leading to enhanced precipitation of 0.59 km3 w.eq. (or ~60%), runoff of 0.43 km3 w.eq. (or ~55%), and SMB of 0.16 km3 w.eq. (or ~85%). Runoff rose on average from 0.80 km3 w.eq. in 1978/1979 to 1.23 km3 w.eq. in 2007/2008. The GrIS satellite-derived melt-extent increased significantly, and the melting intensification occurred simultaneously with the increase in local Kangerlussuaq runoff, indicating that satellite data can be used as a proxy (r2=0.64) for runoff from the Kangerlussuaq drainage area. |
format |
Article in Journal/Newspaper |
author |
Mernild, S. H. Liston, G. E. Steffen, K. van den Broeke, M. Hasholt, B. |
author_facet |
Mernild, S. H. Liston, G. E. Steffen, K. van den Broeke, M. Hasholt, B. |
author_sort |
Mernild, S. H. |
title |
Runoff and mass-balance simulations from the Greenland Ice Sheet at Kangerlussuaq (Søndre Strømfjord) in a 30-year perspective, 1979–2008 |
title_short |
Runoff and mass-balance simulations from the Greenland Ice Sheet at Kangerlussuaq (Søndre Strømfjord) in a 30-year perspective, 1979–2008 |
title_full |
Runoff and mass-balance simulations from the Greenland Ice Sheet at Kangerlussuaq (Søndre Strømfjord) in a 30-year perspective, 1979–2008 |
title_fullStr |
Runoff and mass-balance simulations from the Greenland Ice Sheet at Kangerlussuaq (Søndre Strømfjord) in a 30-year perspective, 1979–2008 |
title_full_unstemmed |
Runoff and mass-balance simulations from the Greenland Ice Sheet at Kangerlussuaq (Søndre Strømfjord) in a 30-year perspective, 1979–2008 |
title_sort |
runoff and mass-balance simulations from the greenland ice sheet at kangerlussuaq (søndre strømfjord) in a 30-year perspective, 1979–2008 |
publisher |
Copernicus Publications |
publishDate |
2010 |
url |
https://doi.org/10.5194/tc-4-231-2010 https://noa.gwlb.de/receive/cop_mods_00028797 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028752/tc-4-231-2010.pdf https://tc.copernicus.org/articles/4/231/2010/tc-4-231-2010.pdf |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) ENVELOPE(-55.633,-55.633,72.633,72.633) |
geographic |
Ela Greenland Kangerlussuaq |
geographic_facet |
Ela Greenland Kangerlussuaq |
genre |
Greenland Ice Sheet Kangerlussuaq Søndre strømfjord The Cryosphere |
genre_facet |
Greenland Ice Sheet Kangerlussuaq Søndre strømfjord 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-4-231-2010 https://noa.gwlb.de/receive/cop_mods_00028797 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00028752/tc-4-231-2010.pdf https://tc.copernicus.org/articles/4/231/2010/tc-4-231-2010.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-4-231-2010 |
container_title |
The Cryosphere |
container_volume |
4 |
container_issue |
2 |
container_start_page |
231 |
op_container_end_page |
242 |
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1766016509120872448 |