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 Earth’s climate, as it influences melting of ice shelves, the formation of bottom water, and...
Published in: | Science Advances |
---|---|
Main Authors: | , , |
Format: | Text |
Language: | English |
Published: |
American Association for the Advancement of Science
2023
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10156111/ https://doi.org/10.1126/sciadv.add7049 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:10156111 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:10156111 2023-06-11T04:07:00+02:00 Heat transport across the Antarctic Slope Front controlled by cross-slope salinity gradients Si, Yidongfang Stewart, Andrew L. Eisenman, Ian 2023-05-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10156111/ https://doi.org/10.1126/sciadv.add7049 en eng American Association for the Advancement of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10156111/ http://dx.doi.org/10.1126/sciadv.add7049 Copyright © 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Sci Adv Earth Environmental Ecological and Space Sciences Text 2023 ftpubmed https://doi.org/10.1126/sciadv.add7049 2023-05-07T01:26:08Z 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 Earth’s 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. Text Antarc* Antarctic Ice Sheet Ice Shelves PubMed Central (PMC) Antarctic The Antarctic Science Advances 9 18 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Earth Environmental Ecological and Space Sciences |
spellingShingle |
Earth Environmental Ecological and Space Sciences Si, Yidongfang Stewart, Andrew L. Eisenman, Ian Heat transport across the Antarctic Slope Front controlled by cross-slope salinity gradients |
topic_facet |
Earth Environmental Ecological and Space Sciences |
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 Earth’s 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 |
Text |
author |
Si, Yidongfang Stewart, Andrew L. Eisenman, Ian |
author_facet |
Si, Yidongfang Stewart, Andrew L. 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 |
American Association for the Advancement of Science |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10156111/ https://doi.org/10.1126/sciadv.add7049 |
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 |
Sci Adv |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10156111/ http://dx.doi.org/10.1126/sciadv.add7049 |
op_rights |
Copyright © 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_doi |
https://doi.org/10.1126/sciadv.add7049 |
container_title |
Science Advances |
container_volume |
9 |
container_issue |
18 |
_version_ |
1768379420099215360 |