Modelling of snow and ice melt at ETH Camp (West Greenland): A study of surface albedo
[1] The objective of this paper is to present the validation over Greenland of a thermodynamic snow-ice model that was complemented with the snow metamorphism and albedo parameterizations of the Centre d'Etudes de la Neige (Grenoble, France) in order to make the surface albedo variable and inte...
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Language: | English |
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Amer Geophysical Union
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Online Access: | http://hdl.handle.net/2078.1/41029 https://doi.org/10.1029/2001JD001160 |
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ftunivlouvain:oai:dial.uclouvain.be:boreal:41029 2024-05-12T08:04:22+00:00 Modelling of snow and ice melt at ETH Camp (West Greenland): A study of surface albedo Lefebre, F. Gallee, H. van Ypersele de Strihou, Jean-Pascal Greuell, W UCL - SST/ELI/ELIC - Earth & Climate 2003 http://hdl.handle.net/2078.1/41029 https://doi.org/10.1029/2001JD001160 eng eng Amer Geophysical Union boreal:41029 http://hdl.handle.net/2078.1/41029 doi:10.1029/2001JD001160 urn:ISSN:0148-0227 Journal of Geophysical Research, Vol. 108, no. D8 (2003) modeling surface albedo on Greenland snow albedo modeling surface mass balance at ETH Camp Greenland surface mass balance info:eu-repo/semantics/article 2003 ftunivlouvain https://doi.org/10.1029/2001JD001160 2024-04-17T17:32:17Z [1] The objective of this paper is to present the validation over Greenland of a thermodynamic snow-ice model that was complemented with the snow metamorphism and albedo parameterizations of the Centre d'Etudes de la Neige (Grenoble, France) in order to make the surface albedo variable and interactive. Special attention is given to the surface albedo since it is the most important parameter in energy exchanges with the atmosphere for snow and ice melt. The development of an integrated (snow, ice, and water) albedo model takes into account the different surface types observed on an ice sheet, and the snow albedo is calculated from the simulated surface snow grains. The validation for a polar site has been done at ETH Camp (West Greenland, 1155 m above sea level) during the 1990 and 1991 summer seasons. Although both ablation seasons differed greatly (in 1990 it showed a negative mass balance while in 1991 it ended with a positive mass balance), a single model configuration was able to provide good results for both 1990 and 1991. These simulations show that the snow metamorphism laws included enable an accurate simulation of the surface albedo and henceforth of the surface mass balance for a polar site, provided that the snow model is correctly forced at its surface level and that meltwater retention, percolation, and drainage are well represented in the snow model. The model results are also compared with two other modeling approaches, and differences between the three snow models are detailed. Article in Journal/Newspaper Greenland Ice Sheet DIAL@UCLouvain (Université catholique de Louvain) Greenland Journal of Geophysical Research 108 D8 |
institution |
Open Polar |
collection |
DIAL@UCLouvain (Université catholique de Louvain) |
op_collection_id |
ftunivlouvain |
language |
English |
topic |
modeling surface albedo on Greenland snow albedo modeling surface mass balance at ETH Camp Greenland surface mass balance |
spellingShingle |
modeling surface albedo on Greenland snow albedo modeling surface mass balance at ETH Camp Greenland surface mass balance Lefebre, F. Gallee, H. van Ypersele de Strihou, Jean-Pascal Greuell, W Modelling of snow and ice melt at ETH Camp (West Greenland): A study of surface albedo |
topic_facet |
modeling surface albedo on Greenland snow albedo modeling surface mass balance at ETH Camp Greenland surface mass balance |
description |
[1] The objective of this paper is to present the validation over Greenland of a thermodynamic snow-ice model that was complemented with the snow metamorphism and albedo parameterizations of the Centre d'Etudes de la Neige (Grenoble, France) in order to make the surface albedo variable and interactive. Special attention is given to the surface albedo since it is the most important parameter in energy exchanges with the atmosphere for snow and ice melt. The development of an integrated (snow, ice, and water) albedo model takes into account the different surface types observed on an ice sheet, and the snow albedo is calculated from the simulated surface snow grains. The validation for a polar site has been done at ETH Camp (West Greenland, 1155 m above sea level) during the 1990 and 1991 summer seasons. Although both ablation seasons differed greatly (in 1990 it showed a negative mass balance while in 1991 it ended with a positive mass balance), a single model configuration was able to provide good results for both 1990 and 1991. These simulations show that the snow metamorphism laws included enable an accurate simulation of the surface albedo and henceforth of the surface mass balance for a polar site, provided that the snow model is correctly forced at its surface level and that meltwater retention, percolation, and drainage are well represented in the snow model. The model results are also compared with two other modeling approaches, and differences between the three snow models are detailed. |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Lefebre, F. Gallee, H. van Ypersele de Strihou, Jean-Pascal Greuell, W |
author_facet |
Lefebre, F. Gallee, H. van Ypersele de Strihou, Jean-Pascal Greuell, W |
author_sort |
Lefebre, F. |
title |
Modelling of snow and ice melt at ETH Camp (West Greenland): A study of surface albedo |
title_short |
Modelling of snow and ice melt at ETH Camp (West Greenland): A study of surface albedo |
title_full |
Modelling of snow and ice melt at ETH Camp (West Greenland): A study of surface albedo |
title_fullStr |
Modelling of snow and ice melt at ETH Camp (West Greenland): A study of surface albedo |
title_full_unstemmed |
Modelling of snow and ice melt at ETH Camp (West Greenland): A study of surface albedo |
title_sort |
modelling of snow and ice melt at eth camp (west greenland): a study of surface albedo |
publisher |
Amer Geophysical Union |
publishDate |
2003 |
url |
http://hdl.handle.net/2078.1/41029 https://doi.org/10.1029/2001JD001160 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Journal of Geophysical Research, Vol. 108, no. D8 (2003) |
op_relation |
boreal:41029 http://hdl.handle.net/2078.1/41029 doi:10.1029/2001JD001160 urn:ISSN:0148-0227 |
op_doi |
https://doi.org/10.1029/2001JD001160 |
container_title |
Journal of Geophysical Research |
container_volume |
108 |
container_issue |
D8 |
_version_ |
1798846550244327424 |