Evaluating a regional climate model simulation of Greenland ice sheet snow and firn density for improved surface mass balance estimates
peer reviewed Modeling vertical profiles of snow and firn density near the surface of the Greenland ice sheet (GrIS) is key to estimating GrIS mass balance, and by extension, global sea level change. To understand sources of error in simulated GrIS density, we compare GrIS density profiles from a le...
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Online Access: | https://orbi.uliege.be/handle/2268/240310 https://orbi.uliege.be/bitstream/2268/240310/1/Alexander_et_al-2019-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2019GL084101 |
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ftorbi:oai:orbi.ulg.ac.be:2268/240310 2024-04-21T08:03:28+00:00 Evaluating a regional climate model simulation of Greenland ice sheet snow and firn density for improved surface mass balance estimates Alexander, P. Tedesco, M. Koening, L. Fettweis, Xavier 2019-10-11 https://orbi.uliege.be/handle/2268/240310 https://orbi.uliege.be/bitstream/2268/240310/1/Alexander_et_al-2019-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2019GL084101 en eng Wiley https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019GL084101 urn:issn:0094-8276 urn:issn:1944-8007 https://orbi.uliege.be/handle/2268/240310 info:hdl:2268/240310 https://orbi.uliege.be/bitstream/2268/240310/1/Alexander_et_al-2019-Geophysical_Research_Letters.pdf doi:10.1029/2019GL084101 scopus-id:2-s2.0-85074770586 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Geophysical Research Letters (2019-10-11) 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 2019 ftorbi https://doi.org/10.1029/2019GL084101 2024-03-27T14:53:59Z peer reviewed Modeling vertical profiles of snow and firn density near the surface of the Greenland ice sheet (GrIS) is key to estimating GrIS mass balance, and by extension, global sea level change. To understand sources of error in simulated GrIS density, we compare GrIS density profiles from a leading regional climate model with coincident in situ measurements. We identify key contributors to model density and mass balance biases, including underestimated simulated fresh snow density (which leads to underestimation of density in the top 1 m of snow by ~10%). In areas undergoing frequent melting, positive density biases (of 7% in the top 1 m, and 10% between 1 and 10 m) are likely associated with errors in representing meltwater production, retention and refreezing. The results highlight the importance of accurately capturing fresh snow density and meltwater processes in models used to estimate GrIS mass balance change. Article in Journal/Newspaper Greenland Ice Sheet University of Liège: ORBi (Open Repository and Bibliography) Geophysical Research Letters 46 21 12073 12082 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Alexander, P. Tedesco, M. Koening, L. Fettweis, Xavier Evaluating a regional climate model simulation of Greenland ice sheet snow and firn density for improved surface mass balance estimates |
topic_facet |
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 Modeling vertical profiles of snow and firn density near the surface of the Greenland ice sheet (GrIS) is key to estimating GrIS mass balance, and by extension, global sea level change. To understand sources of error in simulated GrIS density, we compare GrIS density profiles from a leading regional climate model with coincident in situ measurements. We identify key contributors to model density and mass balance biases, including underestimated simulated fresh snow density (which leads to underestimation of density in the top 1 m of snow by ~10%). In areas undergoing frequent melting, positive density biases (of 7% in the top 1 m, and 10% between 1 and 10 m) are likely associated with errors in representing meltwater production, retention and refreezing. The results highlight the importance of accurately capturing fresh snow density and meltwater processes in models used to estimate GrIS mass balance change. |
format |
Article in Journal/Newspaper |
author |
Alexander, P. Tedesco, M. Koening, L. Fettweis, Xavier |
author_facet |
Alexander, P. Tedesco, M. Koening, L. Fettweis, Xavier |
author_sort |
Alexander, P. |
title |
Evaluating a regional climate model simulation of Greenland ice sheet snow and firn density for improved surface mass balance estimates |
title_short |
Evaluating a regional climate model simulation of Greenland ice sheet snow and firn density for improved surface mass balance estimates |
title_full |
Evaluating a regional climate model simulation of Greenland ice sheet snow and firn density for improved surface mass balance estimates |
title_fullStr |
Evaluating a regional climate model simulation of Greenland ice sheet snow and firn density for improved surface mass balance estimates |
title_full_unstemmed |
Evaluating a regional climate model simulation of Greenland ice sheet snow and firn density for improved surface mass balance estimates |
title_sort |
evaluating a regional climate model simulation of greenland ice sheet snow and firn density for improved surface mass balance estimates |
publisher |
Wiley |
publishDate |
2019 |
url |
https://orbi.uliege.be/handle/2268/240310 https://orbi.uliege.be/bitstream/2268/240310/1/Alexander_et_al-2019-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2019GL084101 |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Geophysical Research Letters (2019-10-11) |
op_relation |
https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019GL084101 urn:issn:0094-8276 urn:issn:1944-8007 https://orbi.uliege.be/handle/2268/240310 info:hdl:2268/240310 https://orbi.uliege.be/bitstream/2268/240310/1/Alexander_et_al-2019-Geophysical_Research_Letters.pdf doi:10.1029/2019GL084101 scopus-id:2-s2.0-85074770586 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2019GL084101 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
21 |
container_start_page |
12073 |
op_container_end_page |
12082 |
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1796943307693096960 |