Sensitivity of the Ross Ice Shelf to environmental and glaciological controls
The Ross Ice Shelf (RIS) is currently stable but recent observations have indicated that basal melt rates beneath the ice shelf are expected to increase. It is important to know which areas of the RIS are more sensitive to enhanced basal melting as well as other external forcings or internal materia...
Published in: | The Cryosphere |
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Copernicus Publications
2022
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Online Access: | https://doi.org/10.5194/tc-16-3723-2022 https://tc.copernicus.org/articles/16/3723/2022/tc-16-3723-2022.pdf https://doaj.org/article/da22fe33b8c245088ecd3b5f9f4b3ab9 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:da22fe33b8c245088ecd3b5f9f4b3ab9 2023-05-15T16:41:08+02:00 Sensitivity of the Ross Ice Shelf to environmental and glaciological controls F. Baldacchino M. Morlighem N. R. Golledge H. Horgan A. Malyarenko 2022-09-01 https://doi.org/10.5194/tc-16-3723-2022 https://tc.copernicus.org/articles/16/3723/2022/tc-16-3723-2022.pdf https://doaj.org/article/da22fe33b8c245088ecd3b5f9f4b3ab9 en eng Copernicus Publications doi:10.5194/tc-16-3723-2022 1994-0416 1994-0424 https://tc.copernicus.org/articles/16/3723/2022/tc-16-3723-2022.pdf https://doaj.org/article/da22fe33b8c245088ecd3b5f9f4b3ab9 undefined The Cryosphere, Vol 16, Pp 3723-3738 (2022) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2022 fttriple https://doi.org/10.5194/tc-16-3723-2022 2023-01-22T17:51:33Z The Ross Ice Shelf (RIS) is currently stable but recent observations have indicated that basal melt rates beneath the ice shelf are expected to increase. It is important to know which areas of the RIS are more sensitive to enhanced basal melting as well as other external forcings or internal material properties of the ice to understand how climate change will influence RIS mass balance. In this paper, we use automatic differentiation and the Ice Sheet and Sea-level System Model to quantify the sensitivity of the RIS to changes in basal friction, ice rigidity, surface mass balance, and basal melting. Using volume above flotation (VAF) as our quantity of interest, we find that the RIS is most sensitive to changes in basal friction and ice rigidity close to grounding lines and along shear margins of the Siple Coast Ice Streams and Transantarctic Mountains Outlet Glaciers. The RIS sensitivity to surface mass balance is uniform over grounded ice, while the sensitivity to basal melting is more spatially variable. Changes in basal melting close to the grounding lines of the Siple Coast Ice Streams and Transantarctic Mountains outlet glaciers have a larger impact on the final VAF compared to elsewhere. Additionally, the pinning points and ice shelf shear margins are highly sensitive to changes in basal melt. Our sensitivity maps allow areas of greatest future vulnerability to be identified. Article in Journal/Newspaper Ice Sheet Ice Shelf Ross Ice Shelf The Cryosphere Unknown Ross Ice Shelf Siple ENVELOPE(-83.917,-83.917,-75.917,-75.917) Siple Coast ENVELOPE(-155.000,-155.000,-82.000,-82.000) Transantarctic Mountains The Cryosphere 16 9 3723 3738 |
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English |
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geo envir F. Baldacchino M. Morlighem N. R. Golledge H. Horgan A. Malyarenko Sensitivity of the Ross Ice Shelf to environmental and glaciological controls |
topic_facet |
geo envir |
description |
The Ross Ice Shelf (RIS) is currently stable but recent observations have indicated that basal melt rates beneath the ice shelf are expected to increase. It is important to know which areas of the RIS are more sensitive to enhanced basal melting as well as other external forcings or internal material properties of the ice to understand how climate change will influence RIS mass balance. In this paper, we use automatic differentiation and the Ice Sheet and Sea-level System Model to quantify the sensitivity of the RIS to changes in basal friction, ice rigidity, surface mass balance, and basal melting. Using volume above flotation (VAF) as our quantity of interest, we find that the RIS is most sensitive to changes in basal friction and ice rigidity close to grounding lines and along shear margins of the Siple Coast Ice Streams and Transantarctic Mountains Outlet Glaciers. The RIS sensitivity to surface mass balance is uniform over grounded ice, while the sensitivity to basal melting is more spatially variable. Changes in basal melting close to the grounding lines of the Siple Coast Ice Streams and Transantarctic Mountains outlet glaciers have a larger impact on the final VAF compared to elsewhere. Additionally, the pinning points and ice shelf shear margins are highly sensitive to changes in basal melt. Our sensitivity maps allow areas of greatest future vulnerability to be identified. |
format |
Article in Journal/Newspaper |
author |
F. Baldacchino M. Morlighem N. R. Golledge H. Horgan A. Malyarenko |
author_facet |
F. Baldacchino M. Morlighem N. R. Golledge H. Horgan A. Malyarenko |
author_sort |
F. Baldacchino |
title |
Sensitivity of the Ross Ice Shelf to environmental and glaciological controls |
title_short |
Sensitivity of the Ross Ice Shelf to environmental and glaciological controls |
title_full |
Sensitivity of the Ross Ice Shelf to environmental and glaciological controls |
title_fullStr |
Sensitivity of the Ross Ice Shelf to environmental and glaciological controls |
title_full_unstemmed |
Sensitivity of the Ross Ice Shelf to environmental and glaciological controls |
title_sort |
sensitivity of the ross ice shelf to environmental and glaciological controls |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/tc-16-3723-2022 https://tc.copernicus.org/articles/16/3723/2022/tc-16-3723-2022.pdf https://doaj.org/article/da22fe33b8c245088ecd3b5f9f4b3ab9 |
long_lat |
ENVELOPE(-83.917,-83.917,-75.917,-75.917) ENVELOPE(-155.000,-155.000,-82.000,-82.000) |
geographic |
Ross Ice Shelf Siple Siple Coast Transantarctic Mountains |
geographic_facet |
Ross Ice Shelf Siple Siple Coast Transantarctic Mountains |
genre |
Ice Sheet Ice Shelf Ross Ice Shelf The Cryosphere |
genre_facet |
Ice Sheet Ice Shelf Ross Ice Shelf The Cryosphere |
op_source |
The Cryosphere, Vol 16, Pp 3723-3738 (2022) |
op_relation |
doi:10.5194/tc-16-3723-2022 1994-0416 1994-0424 https://tc.copernicus.org/articles/16/3723/2022/tc-16-3723-2022.pdf https://doaj.org/article/da22fe33b8c245088ecd3b5f9f4b3ab9 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-16-3723-2022 |
container_title |
The Cryosphere |
container_volume |
16 |
container_issue |
9 |
container_start_page |
3723 |
op_container_end_page |
3738 |
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1766031570299256832 |