Evaluation of the updated regional climate model RACMO2.3: Summer snowfall impact on the Greenland Ice Sheet
peer reviewed We discuss Greenland Ice Sheet (GrIS) surface mass balance (SMB) differences between the updated polar version of the RACMO climate model (RACMO2.3) and the previous version (RACMO2.1). Among other revisions, the updated model includes an adjusted rainfall-to-snowfall conversion that p...
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Copernicus GmbH
2015
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Online Access: | https://orbi.uliege.be/handle/2268/301891 https://orbi.uliege.be/bitstream/2268/301891/1/Noel_TC_2015.pdf https://doi.org/10.5194/tc-9-1831-2015 |
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ftorbi:oai:orbi.ulg.ac.be:2268/301891 2024-04-21T08:03:34+00:00 Evaluation of the updated regional climate model RACMO2.3: Summer snowfall impact on the Greenland Ice Sheet Noël, Brice Van De Berg, W.J. Van Meijgaard, E. Kuipers Munneke, P. Van De Wal, R.S.W. Van Den Broeke, M.R. 2015-09-18 https://orbi.uliege.be/handle/2268/301891 https://orbi.uliege.be/bitstream/2268/301891/1/Noel_TC_2015.pdf https://doi.org/10.5194/tc-9-1831-2015 en eng Copernicus GmbH https://tc.copernicus.org/articles/9/1831/2015/tc-9-1831-2015.pdf urn:issn:1994-0416 urn:issn:1994-0424 https://orbi.uliege.be/handle/2268/301891 info:hdl:2268/301891 https://orbi.uliege.be/bitstream/2268/301891/1/Noel_TC_2015.pdf doi:10.5194/tc-9-1831-2015 scopus-id:2-s2.0-84942108741 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess The Cryosphere, 9 (5), 1831 - 1844 (2015-09-18) Water Science and Technology Earth-Surface Processes Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2015 ftorbi https://doi.org/10.5194/tc-9-1831-2015 2024-03-27T14:58:15Z peer reviewed We discuss Greenland Ice Sheet (GrIS) surface mass balance (SMB) differences between the updated polar version of the RACMO climate model (RACMO2.3) and the previous version (RACMO2.1). Among other revisions, the updated model includes an adjusted rainfall-to-snowfall conversion that produces exclusively snowfall under freezing conditions; this especially favours snowfall in summer. Summer snowfall in the ablation zone of the GrIS has a pronounced effect on melt rates, affecting modelled GrIS SMB in two ways. By covering relatively dark ice with highly reflective fresh snow, these summer snowfalls have the potential to locally reduce melt rates in the ablation zone of the GrIS through the snow-albedo-melt feedback. At larger scales, SMB changes are driven by differences in orographic precipitation following a shift in large-scale circulation, in combination with enhanced moisture to precipitation conversion for warm to moderately cold conditions. A detailed comparison of model output with observations from automatic weather stations, ice cores and ablation stakes shows that the model update generally improves the simulated SMB-elevation gradient as well as the representation of the surface energy balance, although significant biases remain. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere University of Liège: ORBi (Open Repository and Bibliography) The Cryosphere 9 5 1831 1844 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Water Science and Technology Earth-Surface Processes Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Water Science and Technology Earth-Surface Processes Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Noël, Brice Van De Berg, W.J. Van Meijgaard, E. Kuipers Munneke, P. Van De Wal, R.S.W. Van Den Broeke, M.R. Evaluation of the updated regional climate model RACMO2.3: Summer snowfall impact on the Greenland Ice Sheet |
topic_facet |
Water Science and Technology Earth-Surface Processes Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed We discuss Greenland Ice Sheet (GrIS) surface mass balance (SMB) differences between the updated polar version of the RACMO climate model (RACMO2.3) and the previous version (RACMO2.1). Among other revisions, the updated model includes an adjusted rainfall-to-snowfall conversion that produces exclusively snowfall under freezing conditions; this especially favours snowfall in summer. Summer snowfall in the ablation zone of the GrIS has a pronounced effect on melt rates, affecting modelled GrIS SMB in two ways. By covering relatively dark ice with highly reflective fresh snow, these summer snowfalls have the potential to locally reduce melt rates in the ablation zone of the GrIS through the snow-albedo-melt feedback. At larger scales, SMB changes are driven by differences in orographic precipitation following a shift in large-scale circulation, in combination with enhanced moisture to precipitation conversion for warm to moderately cold conditions. A detailed comparison of model output with observations from automatic weather stations, ice cores and ablation stakes shows that the model update generally improves the simulated SMB-elevation gradient as well as the representation of the surface energy balance, although significant biases remain. |
format |
Article in Journal/Newspaper |
author |
Noël, Brice Van De Berg, W.J. Van Meijgaard, E. Kuipers Munneke, P. Van De Wal, R.S.W. Van Den Broeke, M.R. |
author_facet |
Noël, Brice Van De Berg, W.J. Van Meijgaard, E. Kuipers Munneke, P. Van De Wal, R.S.W. Van Den Broeke, M.R. |
author_sort |
Noël, Brice |
title |
Evaluation of the updated regional climate model RACMO2.3: Summer snowfall impact on the Greenland Ice Sheet |
title_short |
Evaluation of the updated regional climate model RACMO2.3: Summer snowfall impact on the Greenland Ice Sheet |
title_full |
Evaluation of the updated regional climate model RACMO2.3: Summer snowfall impact on the Greenland Ice Sheet |
title_fullStr |
Evaluation of the updated regional climate model RACMO2.3: Summer snowfall impact on the Greenland Ice Sheet |
title_full_unstemmed |
Evaluation of the updated regional climate model RACMO2.3: Summer snowfall impact on the Greenland Ice Sheet |
title_sort |
evaluation of the updated regional climate model racmo2.3: summer snowfall impact on the greenland ice sheet |
publisher |
Copernicus GmbH |
publishDate |
2015 |
url |
https://orbi.uliege.be/handle/2268/301891 https://orbi.uliege.be/bitstream/2268/301891/1/Noel_TC_2015.pdf https://doi.org/10.5194/tc-9-1831-2015 |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, 9 (5), 1831 - 1844 (2015-09-18) |
op_relation |
https://tc.copernicus.org/articles/9/1831/2015/tc-9-1831-2015.pdf urn:issn:1994-0416 urn:issn:1994-0424 https://orbi.uliege.be/handle/2268/301891 info:hdl:2268/301891 https://orbi.uliege.be/bitstream/2268/301891/1/Noel_TC_2015.pdf doi:10.5194/tc-9-1831-2015 scopus-id:2-s2.0-84942108741 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-9-1831-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
5 |
container_start_page |
1831 |
op_container_end_page |
1844 |
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1796943365959319552 |