Strong contrast in mass and energy balance between a coastal mountain glacier and the Greenland ice sheet
We show a strong difference in surface mass and energy balance of a mountain glacier and two sites on the ice sheet at 64°N in West Greenland using stake and automated weather station observations. Net surface mass balance is on average 2.2 m w.e. less negative at the coast compared with the ice she...
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ftreroch:oai:doc.rero.ch:20190628115819-LN 2023-05-15T16:20:57+02:00 Strong contrast in mass and energy balance between a coastal mountain glacier and the Greenland ice sheet Abermann, Jakob As, Dirk Van Wacker, Stefan Langley, Kirsty Machguth, Horst Fausto, Robert Schjøtt 2019-06-28T09:59:39Z http://doc.rero.ch/record/326751/files/mac_scm.pdf eng eng http://doc.rero.ch/record/326751/files/mac_scm.pdf 2019 ftreroch 2023-02-16T17:33:26Z We show a strong difference in surface mass and energy balance of a mountain glacier and two sites on the ice sheet at 64°N in West Greenland using stake and automated weather station observations. Net surface mass balance is on average 2.2 m w.e. less negative at the coast compared with the ice sheet in the same elevation. We find a larger energy turnover at the ice sheet margin on Qamanarssup Sermia than measured on the coastal mountain glacier Qassigiannguit with both energy input and output being of larger absolute value. More cloudiness and a thicker snow cover at the relatively humid coastal glacier result in smaller gains in net-shortwave radiation and smaller losses in net-longwave radiation and a less negative mass balance. Lower wind speeds at the coastal glacier result in weaker turbulent heat exchange between atmosphere and ice surface. On annual average, 17 W m−2 more energy is available for melt at the ice-sheet margin compared with the coastal glacier in the same elevation. Other/Unknown Material glacier Greenland Ice Sheet RERO DOC Digital Library Greenland |
institution |
Open Polar |
collection |
RERO DOC Digital Library |
op_collection_id |
ftreroch |
language |
English |
description |
We show a strong difference in surface mass and energy balance of a mountain glacier and two sites on the ice sheet at 64°N in West Greenland using stake and automated weather station observations. Net surface mass balance is on average 2.2 m w.e. less negative at the coast compared with the ice sheet in the same elevation. We find a larger energy turnover at the ice sheet margin on Qamanarssup Sermia than measured on the coastal mountain glacier Qassigiannguit with both energy input and output being of larger absolute value. More cloudiness and a thicker snow cover at the relatively humid coastal glacier result in smaller gains in net-shortwave radiation and smaller losses in net-longwave radiation and a less negative mass balance. Lower wind speeds at the coastal glacier result in weaker turbulent heat exchange between atmosphere and ice surface. On annual average, 17 W m−2 more energy is available for melt at the ice-sheet margin compared with the coastal glacier in the same elevation. |
author |
Abermann, Jakob As, Dirk Van Wacker, Stefan Langley, Kirsty Machguth, Horst Fausto, Robert Schjøtt |
spellingShingle |
Abermann, Jakob As, Dirk Van Wacker, Stefan Langley, Kirsty Machguth, Horst Fausto, Robert Schjøtt Strong contrast in mass and energy balance between a coastal mountain glacier and the Greenland ice sheet |
author_facet |
Abermann, Jakob As, Dirk Van Wacker, Stefan Langley, Kirsty Machguth, Horst Fausto, Robert Schjøtt |
author_sort |
Abermann, Jakob |
title |
Strong contrast in mass and energy balance between a coastal mountain glacier and the Greenland ice sheet |
title_short |
Strong contrast in mass and energy balance between a coastal mountain glacier and the Greenland ice sheet |
title_full |
Strong contrast in mass and energy balance between a coastal mountain glacier and the Greenland ice sheet |
title_fullStr |
Strong contrast in mass and energy balance between a coastal mountain glacier and the Greenland ice sheet |
title_full_unstemmed |
Strong contrast in mass and energy balance between a coastal mountain glacier and the Greenland ice sheet |
title_sort |
strong contrast in mass and energy balance between a coastal mountain glacier and the greenland ice sheet |
publishDate |
2019 |
url |
http://doc.rero.ch/record/326751/files/mac_scm.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_relation |
http://doc.rero.ch/record/326751/files/mac_scm.pdf |
_version_ |
1766008969214558208 |