Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf
Pine Island Ice Shelf (PIIS) buttresses the Pine Island Glacier, the key contributor to sea-level rise. PIIS has thinned owing to ocean-driven melting, and its calving front has retreated, leading to buttressing loss. PIIS melting depends primarily on the thermocline variability in its front. Furthe...
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/ice-front-retreat-reconfigures-meltwaterdriven-gyres-modulating-ocean-heat-delivery-to-an-antarctic-ice-shelf(f1f480f1-94bf-4556-a035-ec9ec9da67c9).html https://doi.org/10.1038/s41467-022-27968-8 https://research-repository.st-andrews.ac.uk/bitstream/10023/24694/1/Yoon_2022_NatComm_Ice_front_retreat_CC.pdf |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/f1f480f1-94bf-4556-a035-ec9ec9da67c9 2023-05-15T13:39:30+02:00 Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf Yoon, Seung-Tae Lee, Won Sang Nam, Sung Hyun Lee, Choon-Ki Yun, Sukyoung Heywood, Karen Boehme, Lars Zheng, Yixi Lee, Inhee Choi, Yeon Jenkins, Adrian Jin, Emilia Larter, Robert Wellner, Julia Dutrieux, Pierre Bradley, Alexander 2022-01-13 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/ice-front-retreat-reconfigures-meltwaterdriven-gyres-modulating-ocean-heat-delivery-to-an-antarctic-ice-shelf(f1f480f1-94bf-4556-a035-ec9ec9da67c9).html https://doi.org/10.1038/s41467-022-27968-8 https://research-repository.st-andrews.ac.uk/bitstream/10023/24694/1/Yoon_2022_NatComm_Ice_front_retreat_CC.pdf eng eng info:eu-repo/semantics/openAccess Yoon , S-T , Lee , W S , Nam , S H , Lee , C-K , Yun , S , Heywood , K , Boehme , L , Zheng , Y , Lee , I , Choi , Y , Jenkins , A , Jin , E , Larter , R , Wellner , J , Dutrieux , P & Bradley , A 2022 , ' Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf ' , Nature Communications , vol. 13 , 306 . https://doi.org/10.1038/s41467-022-27968-8 article 2022 ftunstandrewcris https://doi.org/10.1038/s41467-022-27968-8 2022-06-02T07:52:47Z Pine Island Ice Shelf (PIIS) buttresses the Pine Island Glacier, the key contributor to sea-level rise. PIIS has thinned owing to ocean-driven melting, and its calving front has retreated, leading to buttressing loss. PIIS melting depends primarily on the thermocline variability in its front. Furthermore, local ocean circulation shifts adjust heat transport within Pine Island Bay (PIB), yet oceanic processes underlying the ice front retreat remain unclear. Here, we report a PIB double-gyre that moves with the PIIS calving front and hypothesise that it controls ocean heat input towards PIIS. Glacial melt generates cyclonic and anticyclonic gyres near and off PIIS, and meltwater outflows converge into the anticyclonic gyre with a deep-convex-downward thermocline. The double-gyre migrated eastward as the calving front retreated, placing the anticyclonic gyre over a shallow seafloor ridge, reducing the ocean heat input towards PIIS. Reconfigurations of meltwater-driven gyres associated with moving ice boundaries might be crucial in modulating ocean heat delivery to glacial ice. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Pine Island Bay Pine Island Glacier University of St Andrews: Research Portal Antarctic Island Bay ENVELOPE(-109.085,-109.085,59.534,59.534) Pine Island Bay ENVELOPE(-102.000,-102.000,-74.750,-74.750) Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) Nature Communications 13 1 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
description |
Pine Island Ice Shelf (PIIS) buttresses the Pine Island Glacier, the key contributor to sea-level rise. PIIS has thinned owing to ocean-driven melting, and its calving front has retreated, leading to buttressing loss. PIIS melting depends primarily on the thermocline variability in its front. Furthermore, local ocean circulation shifts adjust heat transport within Pine Island Bay (PIB), yet oceanic processes underlying the ice front retreat remain unclear. Here, we report a PIB double-gyre that moves with the PIIS calving front and hypothesise that it controls ocean heat input towards PIIS. Glacial melt generates cyclonic and anticyclonic gyres near and off PIIS, and meltwater outflows converge into the anticyclonic gyre with a deep-convex-downward thermocline. The double-gyre migrated eastward as the calving front retreated, placing the anticyclonic gyre over a shallow seafloor ridge, reducing the ocean heat input towards PIIS. Reconfigurations of meltwater-driven gyres associated with moving ice boundaries might be crucial in modulating ocean heat delivery to glacial ice. |
format |
Article in Journal/Newspaper |
author |
Yoon, Seung-Tae Lee, Won Sang Nam, Sung Hyun Lee, Choon-Ki Yun, Sukyoung Heywood, Karen Boehme, Lars Zheng, Yixi Lee, Inhee Choi, Yeon Jenkins, Adrian Jin, Emilia Larter, Robert Wellner, Julia Dutrieux, Pierre Bradley, Alexander |
spellingShingle |
Yoon, Seung-Tae Lee, Won Sang Nam, Sung Hyun Lee, Choon-Ki Yun, Sukyoung Heywood, Karen Boehme, Lars Zheng, Yixi Lee, Inhee Choi, Yeon Jenkins, Adrian Jin, Emilia Larter, Robert Wellner, Julia Dutrieux, Pierre Bradley, Alexander Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf |
author_facet |
Yoon, Seung-Tae Lee, Won Sang Nam, Sung Hyun Lee, Choon-Ki Yun, Sukyoung Heywood, Karen Boehme, Lars Zheng, Yixi Lee, Inhee Choi, Yeon Jenkins, Adrian Jin, Emilia Larter, Robert Wellner, Julia Dutrieux, Pierre Bradley, Alexander |
author_sort |
Yoon, Seung-Tae |
title |
Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf |
title_short |
Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf |
title_full |
Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf |
title_fullStr |
Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf |
title_full_unstemmed |
Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf |
title_sort |
ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an antarctic ice shelf |
publishDate |
2022 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/ice-front-retreat-reconfigures-meltwaterdriven-gyres-modulating-ocean-heat-delivery-to-an-antarctic-ice-shelf(f1f480f1-94bf-4556-a035-ec9ec9da67c9).html https://doi.org/10.1038/s41467-022-27968-8 https://research-repository.st-andrews.ac.uk/bitstream/10023/24694/1/Yoon_2022_NatComm_Ice_front_retreat_CC.pdf |
long_lat |
ENVELOPE(-109.085,-109.085,59.534,59.534) ENVELOPE(-102.000,-102.000,-74.750,-74.750) ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Antarctic Island Bay Pine Island Bay Pine Island Glacier |
geographic_facet |
Antarctic Island Bay Pine Island Bay Pine Island Glacier |
genre |
Antarc* Antarctic Ice Shelf Pine Island Bay Pine Island Glacier |
genre_facet |
Antarc* Antarctic Ice Shelf Pine Island Bay Pine Island Glacier |
op_source |
Yoon , S-T , Lee , W S , Nam , S H , Lee , C-K , Yun , S , Heywood , K , Boehme , L , Zheng , Y , Lee , I , Choi , Y , Jenkins , A , Jin , E , Larter , R , Wellner , J , Dutrieux , P & Bradley , A 2022 , ' Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf ' , Nature Communications , vol. 13 , 306 . https://doi.org/10.1038/s41467-022-27968-8 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-022-27968-8 |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
_version_ |
1766119708500688896 |