A Downscaling Approach Toward High-resolution Surface Mass Balance Over Antarctica
peer reviewed The Antarctic ice sheet surface mass balance shows high spatial variability over the coastal area. As state-of-the-art climate models usually require coarse resolutions to keep computational costs to a moderate level, they miss some local features that can be captured by field measurem...
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ftorbi:oai:orbi.ulg.ac.be:2268/143901 2024-04-21T07:49:04+00:00 A Downscaling Approach Toward High-resolution Surface Mass Balance Over Antarctica Gallée, Hubert Agosta, Cécile Gential, Luc Favier, Vincent Krinner, Gerhard 2011 https://orbi.uliege.be/handle/2268/143901 https://orbi.uliege.be/bitstream/2268/143901/1/Surv%20Geophys%202011%20Gall%c3%a9e.pdf https://doi.org/10.1007/s10712-011-9125-3 en eng Springer Netherlands info:eu-repo/grantAgreement/EC/FP7/226375 urn:issn:0169-3298 urn:issn:1573-0956 https://orbi.uliege.be/handle/2268/143901 info:hdl:2268/143901 https://orbi.uliege.be/bitstream/2268/143901/1/Surv%20Geophys%202011%20Gall%c3%a9e.pdf doi:10.1007/s10712-011-9125-3 scopus-id:2-s2.0-80053186805 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Surveys in Geophysics, 32 (4-5), 507-518518 (2011) Net accumulation Downscaling Antarctica Law Dome 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 2011 ftorbi https://doi.org/10.1007/s10712-011-9125-3 2024-03-27T14:56:25Z peer reviewed The Antarctic ice sheet surface mass balance shows high spatial variability over the coastal area. As state-of-the-art climate models usually require coarse resolutions to keep computational costs to a moderate level, they miss some local features that can be captured by field measurements. The downscaling approach adopted here consists of using a cascade of atmospheric models from large scale to meso-gamma scale. A regional climate model (Modegravele Atmospheacuterique Reacutegional) forced by meteorological reanalyses provides a diagnostic physically-based rain- and snowfall downscaling model with meteorological fields at the regional scale. Although the parameterizations invoked by the downscaling model are fairly simple, the knowledge of small-scale topography significantly improves the representation of spatial variability of precipitation and therefore that of the surface mass balance. Model evaluation is carried out with the help of shallow firn cores and snow height measurements provided by automatic weather stations. Although downscaling of blowing snow still needs to be implemented in the model, the net accumulation gradient across Law Dome summit is shown to be induced mostly by orographic effects on precipitation. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet University of Liège: ORBi (Open Repository and Bibliography) Surveys in Geophysics 32 4-5 507 518 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Net accumulation Downscaling Antarctica Law Dome Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Net accumulation Downscaling Antarctica Law Dome Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Gallée, Hubert Agosta, Cécile Gential, Luc Favier, Vincent Krinner, Gerhard A Downscaling Approach Toward High-resolution Surface Mass Balance Over Antarctica |
topic_facet |
Net accumulation Downscaling Antarctica Law Dome 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 The Antarctic ice sheet surface mass balance shows high spatial variability over the coastal area. As state-of-the-art climate models usually require coarse resolutions to keep computational costs to a moderate level, they miss some local features that can be captured by field measurements. The downscaling approach adopted here consists of using a cascade of atmospheric models from large scale to meso-gamma scale. A regional climate model (Modegravele Atmospheacuterique Reacutegional) forced by meteorological reanalyses provides a diagnostic physically-based rain- and snowfall downscaling model with meteorological fields at the regional scale. Although the parameterizations invoked by the downscaling model are fairly simple, the knowledge of small-scale topography significantly improves the representation of spatial variability of precipitation and therefore that of the surface mass balance. Model evaluation is carried out with the help of shallow firn cores and snow height measurements provided by automatic weather stations. Although downscaling of blowing snow still needs to be implemented in the model, the net accumulation gradient across Law Dome summit is shown to be induced mostly by orographic effects on precipitation. |
format |
Article in Journal/Newspaper |
author |
Gallée, Hubert Agosta, Cécile Gential, Luc Favier, Vincent Krinner, Gerhard |
author_facet |
Gallée, Hubert Agosta, Cécile Gential, Luc Favier, Vincent Krinner, Gerhard |
author_sort |
Gallée, Hubert |
title |
A Downscaling Approach Toward High-resolution Surface Mass Balance Over Antarctica |
title_short |
A Downscaling Approach Toward High-resolution Surface Mass Balance Over Antarctica |
title_full |
A Downscaling Approach Toward High-resolution Surface Mass Balance Over Antarctica |
title_fullStr |
A Downscaling Approach Toward High-resolution Surface Mass Balance Over Antarctica |
title_full_unstemmed |
A Downscaling Approach Toward High-resolution Surface Mass Balance Over Antarctica |
title_sort |
downscaling approach toward high-resolution surface mass balance over antarctica |
publisher |
Springer Netherlands |
publishDate |
2011 |
url |
https://orbi.uliege.be/handle/2268/143901 https://orbi.uliege.be/bitstream/2268/143901/1/Surv%20Geophys%202011%20Gall%c3%a9e.pdf https://doi.org/10.1007/s10712-011-9125-3 |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
op_source |
Surveys in Geophysics, 32 (4-5), 507-518518 (2011) |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/226375 urn:issn:0169-3298 urn:issn:1573-0956 https://orbi.uliege.be/handle/2268/143901 info:hdl:2268/143901 https://orbi.uliege.be/bitstream/2268/143901/1/Surv%20Geophys%202011%20Gall%c3%a9e.pdf doi:10.1007/s10712-011-9125-3 scopus-id:2-s2.0-80053186805 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s10712-011-9125-3 |
container_title |
Surveys in Geophysics |
container_volume |
32 |
container_issue |
4-5 |
container_start_page |
507 |
op_container_end_page |
518 |
_version_ |
1796952999085473792 |