Unveiling spatial variability within the Dotson Melt Channel through high-resolution basal melt rates from the Reference Elevation Model of Antarctica
The intrusion of Circumpolar Deep Water in the Amundsen and Bellingshausen Sea embayments of Antarctica causes ice shelves in the region to melt from below, potentially putting their stability at risk. Earlier studies have shown how digital elevation models can be used to obtain ice shelf basal melt...
Published in: | The Cryosphere |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2023
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00068654 2023-10-09T21:47:07+02:00 Unveiling spatial variability within the Dotson Melt Channel through high-resolution basal melt rates from the Reference Elevation Model of Antarctica Zinck, Ann-Sofie Priergaard Wouters, Bert Lambert, Erwin Lhermitte, Stef 2023-09 electronic https://doi.org/10.5194/tc-17-3785-2023 https://noa.gwlb.de/receive/cop_mods_00068654 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067073/tc-17-3785-2023.pdf https://tc.copernicus.org/articles/17/3785/2023/tc-17-3785-2023.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-17-3785-2023 https://noa.gwlb.de/receive/cop_mods_00068654 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067073/tc-17-3785-2023.pdf https://tc.copernicus.org/articles/17/3785/2023/tc-17-3785-2023.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/tc-17-3785-2023 2023-09-10T23:21:45Z The intrusion of Circumpolar Deep Water in the Amundsen and Bellingshausen Sea embayments of Antarctica causes ice shelves in the region to melt from below, potentially putting their stability at risk. Earlier studies have shown how digital elevation models can be used to obtain ice shelf basal melt rates at a high spatial resolution. However, there has been limited availability of high-resolution elevation data, a gap the Reference Elevation Model of Antarctica (REMA) has filled. In this study we use a novel combination of REMA and CryoSat-2 elevation data to obtain high-resolution basal melt rates of the Dotson Ice Shelf in a Lagrangian framework, at a 50 m spatial posting on a 3-yearly temporal resolution. We present a novel method: Basal melt rates Using REMA and Google Earth Engine (BURGEE). The high resolution of BURGEE is supported through a sensitivity study of the Lagrangian displacement. The high-resolution basal melt rates show a good agreement with an earlier basal melt product based on CryoSat-2. Both products show a wide melt channel extending from the grounding line to the ice front, but our high-resolution product indicates that the pathway and spatial variability of this channel is influenced by a pinning point on the ice shelf. This result emphasizes the importance of high-resolution basal melt rates to expand our understanding of channel formation and melt patterns. BURGEE can be expanded to a pan-Antarctic study of high-resolution basal melt rates. This will provide a better picture of the (in)stability of Antarctic ice shelves. Article in Journal/Newspaper Antarc* Antarctic Antarctica Bellingshausen Sea Dotson Ice Shelf Ice Shelf Ice Shelves The Cryosphere Niedersächsisches Online-Archiv NOA Antarctic Bellingshausen Sea Dotson Ice Shelf ENVELOPE(-112.367,-112.367,-74.400,-74.400) The Cryosphere 17 9 3785 3801 |
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Niedersächsisches Online-Archiv NOA |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Zinck, Ann-Sofie Priergaard Wouters, Bert Lambert, Erwin Lhermitte, Stef Unveiling spatial variability within the Dotson Melt Channel through high-resolution basal melt rates from the Reference Elevation Model of Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
The intrusion of Circumpolar Deep Water in the Amundsen and Bellingshausen Sea embayments of Antarctica causes ice shelves in the region to melt from below, potentially putting their stability at risk. Earlier studies have shown how digital elevation models can be used to obtain ice shelf basal melt rates at a high spatial resolution. However, there has been limited availability of high-resolution elevation data, a gap the Reference Elevation Model of Antarctica (REMA) has filled. In this study we use a novel combination of REMA and CryoSat-2 elevation data to obtain high-resolution basal melt rates of the Dotson Ice Shelf in a Lagrangian framework, at a 50 m spatial posting on a 3-yearly temporal resolution. We present a novel method: Basal melt rates Using REMA and Google Earth Engine (BURGEE). The high resolution of BURGEE is supported through a sensitivity study of the Lagrangian displacement. The high-resolution basal melt rates show a good agreement with an earlier basal melt product based on CryoSat-2. Both products show a wide melt channel extending from the grounding line to the ice front, but our high-resolution product indicates that the pathway and spatial variability of this channel is influenced by a pinning point on the ice shelf. This result emphasizes the importance of high-resolution basal melt rates to expand our understanding of channel formation and melt patterns. BURGEE can be expanded to a pan-Antarctic study of high-resolution basal melt rates. This will provide a better picture of the (in)stability of Antarctic ice shelves. |
format |
Article in Journal/Newspaper |
author |
Zinck, Ann-Sofie Priergaard Wouters, Bert Lambert, Erwin Lhermitte, Stef |
author_facet |
Zinck, Ann-Sofie Priergaard Wouters, Bert Lambert, Erwin Lhermitte, Stef |
author_sort |
Zinck, Ann-Sofie Priergaard |
title |
Unveiling spatial variability within the Dotson Melt Channel through high-resolution basal melt rates from the Reference Elevation Model of Antarctica |
title_short |
Unveiling spatial variability within the Dotson Melt Channel through high-resolution basal melt rates from the Reference Elevation Model of Antarctica |
title_full |
Unveiling spatial variability within the Dotson Melt Channel through high-resolution basal melt rates from the Reference Elevation Model of Antarctica |
title_fullStr |
Unveiling spatial variability within the Dotson Melt Channel through high-resolution basal melt rates from the Reference Elevation Model of Antarctica |
title_full_unstemmed |
Unveiling spatial variability within the Dotson Melt Channel through high-resolution basal melt rates from the Reference Elevation Model of Antarctica |
title_sort |
unveiling spatial variability within the dotson melt channel through high-resolution basal melt rates from the reference elevation model of antarctica |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-17-3785-2023 https://noa.gwlb.de/receive/cop_mods_00068654 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067073/tc-17-3785-2023.pdf https://tc.copernicus.org/articles/17/3785/2023/tc-17-3785-2023.pdf |
long_lat |
ENVELOPE(-112.367,-112.367,-74.400,-74.400) |
geographic |
Antarctic Bellingshausen Sea Dotson Ice Shelf |
geographic_facet |
Antarctic Bellingshausen Sea Dotson Ice Shelf |
genre |
Antarc* Antarctic Antarctica Bellingshausen Sea Dotson Ice Shelf Ice Shelf Ice Shelves The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica Bellingshausen Sea Dotson Ice Shelf Ice Shelf Ice Shelves The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-17-3785-2023 https://noa.gwlb.de/receive/cop_mods_00068654 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067073/tc-17-3785-2023.pdf https://tc.copernicus.org/articles/17/3785/2023/tc-17-3785-2023.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-17-3785-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
9 |
container_start_page |
3785 |
op_container_end_page |
3801 |
_version_ |
1779309878140993536 |