Heat transport across the Antarctic Slope Front controlled by cross-slope salinity gradients.
The Antarctic Slope Front (ASF) is a strong gradient in water mass properties close to the Antarctic margins, separating warm water from the Antarctic ice sheet. Heat transport across the ASF is important to Earths climate, as it influences melting of ice shelves, the formation of bottom water, and...
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ftcdlib:oai:escholarship.org:ark:/13030/qt5q50f46s 2023-07-30T03:59:24+02:00 Heat transport across the Antarctic Slope Front controlled by cross-slope salinity gradients. Si, Yidongfang Stewart, Andrew Eisenman, Ian 2023-05-03 application/pdf https://escholarship.org/uc/item/5q50f46s unknown eScholarship, University of California qt5q50f46s https://escholarship.org/uc/item/5q50f46s public Science Advances, vol 9, iss 18 article 2023 ftcdlib 2023-07-17T17:59:03Z The Antarctic Slope Front (ASF) is a strong gradient in water mass properties close to the Antarctic margins, separating warm water from the Antarctic ice sheet. Heat transport across the ASF is important to Earths climate, as it influences melting of ice shelves, the formation of bottom water, and thus the global meridional overturning circulation. Previous studies based on relatively low-resolution global models have reported contradictory findings regarding the impact of additional meltwater on heat transport toward the Antarctic continental shelf: It remains unclear whether meltwater enhances shoreward heat transport, leading to a positive feedback, or further isolates the continental shelf from the open ocean. In this study, heat transport across the ASF is investigated using eddy- and tide-resolving, process-oriented simulations. It is found that freshening of the fresh coastal waters leads to increased shoreward heat flux, which implies a positive feedback in a warming climate: Increased meltwater will increase shoreward heat transport, causing further melt of ice shelves. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Ice Shelves University of California: eScholarship Antarctic The Antarctic |
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University of California: eScholarship |
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language |
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description |
The Antarctic Slope Front (ASF) is a strong gradient in water mass properties close to the Antarctic margins, separating warm water from the Antarctic ice sheet. Heat transport across the ASF is important to Earths climate, as it influences melting of ice shelves, the formation of bottom water, and thus the global meridional overturning circulation. Previous studies based on relatively low-resolution global models have reported contradictory findings regarding the impact of additional meltwater on heat transport toward the Antarctic continental shelf: It remains unclear whether meltwater enhances shoreward heat transport, leading to a positive feedback, or further isolates the continental shelf from the open ocean. In this study, heat transport across the ASF is investigated using eddy- and tide-resolving, process-oriented simulations. It is found that freshening of the fresh coastal waters leads to increased shoreward heat flux, which implies a positive feedback in a warming climate: Increased meltwater will increase shoreward heat transport, causing further melt of ice shelves. |
format |
Article in Journal/Newspaper |
author |
Si, Yidongfang Stewart, Andrew Eisenman, Ian |
spellingShingle |
Si, Yidongfang Stewart, Andrew Eisenman, Ian Heat transport across the Antarctic Slope Front controlled by cross-slope salinity gradients. |
author_facet |
Si, Yidongfang Stewart, Andrew Eisenman, Ian |
author_sort |
Si, Yidongfang |
title |
Heat transport across the Antarctic Slope Front controlled by cross-slope salinity gradients. |
title_short |
Heat transport across the Antarctic Slope Front controlled by cross-slope salinity gradients. |
title_full |
Heat transport across the Antarctic Slope Front controlled by cross-slope salinity gradients. |
title_fullStr |
Heat transport across the Antarctic Slope Front controlled by cross-slope salinity gradients. |
title_full_unstemmed |
Heat transport across the Antarctic Slope Front controlled by cross-slope salinity gradients. |
title_sort |
heat transport across the antarctic slope front controlled by cross-slope salinity gradients. |
publisher |
eScholarship, University of California |
publishDate |
2023 |
url |
https://escholarship.org/uc/item/5q50f46s |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Ice Shelves |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelves |
op_source |
Science Advances, vol 9, iss 18 |
op_relation |
qt5q50f46s https://escholarship.org/uc/item/5q50f46s |
op_rights |
public |
_version_ |
1772810208901332992 |