Unveiling spatial variability within the Dotson Melt Channel through high-resolution basal melt rates from the Reference Elevation Model of Antarctica
<p>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 b...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-09-01
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| Series: | The Cryosphere |
| Online Access: | https://tc.copernicus.org/articles/17/3785/2023/tc-17-3785-2023.pdf |
| _version_ | 1827824669839851520 |
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| author | A.-S. P. Zinck A.-S. P. Zinck B. Wouters B. Wouters E. Lambert S. Lhermitte S. Lhermitte |
| author_facet | A.-S. P. Zinck A.-S. P. Zinck B. Wouters B. Wouters E. Lambert S. Lhermitte S. Lhermitte |
| author_sort | A.-S. P. Zinck |
| collection | DOAJ |
| description | <p>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.</p> |
| first_indexed | 2024-03-12T02:29:52Z |
| format | Article |
| id | doaj.art-50d90694e7a3415193b8e36b57f494db |
| institution | Directory Open Access Journal |
| issn | 1994-0416 1994-0424 |
| language | English |
| last_indexed | 2024-03-12T02:29:52Z |
| publishDate | 2023-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The Cryosphere |
| spelling | doaj.art-50d90694e7a3415193b8e36b57f494db2023-09-05T08:24:16ZengCopernicus PublicationsThe Cryosphere1994-04161994-04242023-09-01173785380110.5194/tc-17-3785-2023Unveiling spatial variability within the Dotson Melt Channel through high-resolution basal melt rates from the Reference Elevation Model of AntarcticaA.-S. P. Zinck0A.-S. P. Zinck1B. Wouters2B. Wouters3E. Lambert4S. Lhermitte5S. Lhermitte6Department of Geoscience & Remote Sensing, Delft University of Technology, Delft, the NetherlandsInstitute for Marine and Atmospheric Research Utrecht (IMAU), Utrecht University, Utrecht, the NetherlandsDepartment of Geoscience & Remote Sensing, Delft University of Technology, Delft, the NetherlandsInstitute for Marine and Atmospheric Research Utrecht (IMAU), Utrecht University, Utrecht, the NetherlandsResearch and Development Weather and Climate Modelling (RDWK), Royal Netherlands Meteorological Institute (KNMI), De Bilt, the NetherlandsDepartment of Geoscience & Remote Sensing, Delft University of Technology, Delft, the NetherlandsDepartment of Earth and Environmental Sciences, Katholieke Universiteit Leuven, Leuven, Belgium<p>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.</p>https://tc.copernicus.org/articles/17/3785/2023/tc-17-3785-2023.pdf |
| spellingShingle | A.-S. P. Zinck A.-S. P. Zinck B. Wouters B. Wouters E. Lambert S. Lhermitte S. Lhermitte Unveiling spatial variability within the Dotson Melt Channel through high-resolution basal melt rates from the Reference Elevation Model of Antarctica The Cryosphere |
| title | 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_short | 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 |
| url | https://tc.copernicus.org/articles/17/3785/2023/tc-17-3785-2023.pdf |
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