Regional climate-model performance in Greenland firn derived from in situ observations
Recent record-warm summers in Greenland (Khan et al. 2015) have started affecting the higher regions of the ice sheet (i.e. the accumulation area), where increased melt has altered the properties of firn (i.e. multi-year snow). At high altitudes, meltwater percolates in the porous snow and firn, whe...
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ftjgeusbullet:oai:geusjournals.org:article/4943 2023-05-15T16:27:14+02:00 Regional climate-model performance in Greenland firn derived from in situ observations Charalampidis, Charalampos van As, Dirk Langen, Peter L. Fausto, Robert S. Vandecrux, Baptiste Box, Jason E. 2016-07-15 application/pdf https://geusbulletin.org/index.php/geusb/article/view/4943 https://doi.org/10.34194/geusb.v35.4943 eng eng Geological Survey of Denmark and Greenland (GEUS) https://geusbulletin.org/index.php/geusb/article/view/4943/10609 https://geusbulletin.org/index.php/geusb/article/view/4943 doi:10.34194/geusb.v35.4943 GEUS Bulletin; Vol. 35 (2016): Review of Survey activities 2015; 75-78 2597-2154 2597-2162 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Rapid Communication. Peer-reviewed Article. 2016 ftjgeusbullet https://doi.org/10.34194/geusb.v35.4943 2022-03-15T17:22:19Z Recent record-warm summers in Greenland (Khan et al. 2015) have started affecting the higher regions of the ice sheet (i.e. the accumulation area), where increased melt has altered the properties of firn (i.e. multi-year snow). At high altitudes, meltwater percolates in the porous snow and firn, where it refreezes. The result is mass conservation, as the refrozen meltwater is essentially stored (Harper et al. 2012). However, in some regions increased meltwater refreezing in shallow firn has created thick ice layers. These ice layers act as a lid, and can inhibit meltwater percolation to greater depths, causing it to run off instead (Machguth et al. 2016). Meltwater at the surface also results in more absorbed sunlight, and hence increased melt in the accumulation area (Charalampidis et al. 2015). These relatively poorly understood processes are important for ice-sheet mass-budget projections. Article in Journal/Newspaper Greenland Ice Sheet GEUS Bulletin (Geological Survey of Denmark and Greenland) Greenland Harper ENVELOPE(-57.050,-57.050,-84.050,-84.050) Geological Survey of Denmark and Greenland (GEUS) Bulletin 35 75 78 |
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Open Polar |
collection |
GEUS Bulletin (Geological Survey of Denmark and Greenland) |
op_collection_id |
ftjgeusbullet |
language |
English |
description |
Recent record-warm summers in Greenland (Khan et al. 2015) have started affecting the higher regions of the ice sheet (i.e. the accumulation area), where increased melt has altered the properties of firn (i.e. multi-year snow). At high altitudes, meltwater percolates in the porous snow and firn, where it refreezes. The result is mass conservation, as the refrozen meltwater is essentially stored (Harper et al. 2012). However, in some regions increased meltwater refreezing in shallow firn has created thick ice layers. These ice layers act as a lid, and can inhibit meltwater percolation to greater depths, causing it to run off instead (Machguth et al. 2016). Meltwater at the surface also results in more absorbed sunlight, and hence increased melt in the accumulation area (Charalampidis et al. 2015). These relatively poorly understood processes are important for ice-sheet mass-budget projections. |
format |
Article in Journal/Newspaper |
author |
Charalampidis, Charalampos van As, Dirk Langen, Peter L. Fausto, Robert S. Vandecrux, Baptiste Box, Jason E. |
spellingShingle |
Charalampidis, Charalampos van As, Dirk Langen, Peter L. Fausto, Robert S. Vandecrux, Baptiste Box, Jason E. Regional climate-model performance in Greenland firn derived from in situ observations |
author_facet |
Charalampidis, Charalampos van As, Dirk Langen, Peter L. Fausto, Robert S. Vandecrux, Baptiste Box, Jason E. |
author_sort |
Charalampidis, Charalampos |
title |
Regional climate-model performance in Greenland firn derived from in situ observations |
title_short |
Regional climate-model performance in Greenland firn derived from in situ observations |
title_full |
Regional climate-model performance in Greenland firn derived from in situ observations |
title_fullStr |
Regional climate-model performance in Greenland firn derived from in situ observations |
title_full_unstemmed |
Regional climate-model performance in Greenland firn derived from in situ observations |
title_sort |
regional climate-model performance in greenland firn derived from in situ observations |
publisher |
Geological Survey of Denmark and Greenland (GEUS) |
publishDate |
2016 |
url |
https://geusbulletin.org/index.php/geusb/article/view/4943 https://doi.org/10.34194/geusb.v35.4943 |
long_lat |
ENVELOPE(-57.050,-57.050,-84.050,-84.050) |
geographic |
Greenland Harper |
geographic_facet |
Greenland Harper |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
GEUS Bulletin; Vol. 35 (2016): Review of Survey activities 2015; 75-78 2597-2154 2597-2162 |
op_relation |
https://geusbulletin.org/index.php/geusb/article/view/4943/10609 https://geusbulletin.org/index.php/geusb/article/view/4943 doi:10.34194/geusb.v35.4943 |
op_doi |
https://doi.org/10.34194/geusb.v35.4943 |
container_title |
Geological Survey of Denmark and Greenland (GEUS) Bulletin |
container_volume |
35 |
container_start_page |
75 |
op_container_end_page |
78 |
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1766016351690817536 |