Remote Control of Filchner‐Ronne Ice Shelf Melt Rates by the Antarctic Slope Current
International audience Recent work on the Filchner-Ronne Ice Shelf (FRIS) system has shown that a redirection of the coastal current in the southeastern Weddell Sea could lead to a regime change in which an intrusion of warm Modified Circumpolar Deep Water results in large increases in the basal mel...
Published in: | Journal of Geophysical Research: Oceans |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2021
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Subjects: | |
Online Access: | https://hal.science/hal-03244475 https://hal.science/hal-03244475/document https://hal.science/hal-03244475/file/2020JC016550.pdf https://doi.org/10.1029/2020JC016550 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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ftinsu |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] Bull, Christopher Y. S. Jenkins, Adrian Jourdain, Nicolas Vaňková, Irena Holland, Paul R. Mathiot, Pierre Hausmann, Ute Sallée, Jean-Baptiste Remote Control of Filchner‐Ronne Ice Shelf Melt Rates by the Antarctic Slope Current |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience Recent work on the Filchner-Ronne Ice Shelf (FRIS) system has shown that a redirection of the coastal current in the southeastern Weddell Sea could lead to a regime change in which an intrusion of warm Modified Circumpolar Deep Water results in large increases in the basal melt rate. Work to date has mostly focused on how increases in the Modified Circumpolar Deep Water crossing the continental shelf break leads directly to heat driven changes in melting in the ice-shelf cavity. In this study, we introduce a Weddell Sea regional ocean model configuration with static ice shelves. We evaluate a reference simulation against radar observations of melting, and find good agreement between the simulated and observed mean melt rates. We analyze 28 sensitivity experiments that simulate the influence of changes in remote water properties of the Antarctic Slope Current on basal melting in the FRIS. We find that remote changes in salinity quasi-linearly modulate the mean FRIS net melt rate. Changes in remote temperature quadratically vary the FRIS net melt rate. In both salinity and temperature perturbations, the response is rapid and transient, with a recovery time-scale of 5–15 years dependent on the size/type of perturbation. We show that the two types of perturbations lead to different changes on the continental shelf, and that ultimately different factors modulate the melt rates in the FRIS cavity. We discuss how these results, are relevant for ocean hindcast simulations, sea level, and melt rate projections of the FRIS. |
author2 |
British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) ANR-15-CE01-0005,TROIS-AS,Vers un système de modélisation régionale océan / calotte / atmosphère(2015) European Project: 637770,H2020,ERC-2014-STG,WAPITI(2015) |
format |
Article in Journal/Newspaper |
author |
Bull, Christopher Y. S. Jenkins, Adrian Jourdain, Nicolas Vaňková, Irena Holland, Paul R. Mathiot, Pierre Hausmann, Ute Sallée, Jean-Baptiste |
author_facet |
Bull, Christopher Y. S. Jenkins, Adrian Jourdain, Nicolas Vaňková, Irena Holland, Paul R. Mathiot, Pierre Hausmann, Ute Sallée, Jean-Baptiste |
author_sort |
Bull, Christopher Y. S. |
title |
Remote Control of Filchner‐Ronne Ice Shelf Melt Rates by the Antarctic Slope Current |
title_short |
Remote Control of Filchner‐Ronne Ice Shelf Melt Rates by the Antarctic Slope Current |
title_full |
Remote Control of Filchner‐Ronne Ice Shelf Melt Rates by the Antarctic Slope Current |
title_fullStr |
Remote Control of Filchner‐Ronne Ice Shelf Melt Rates by the Antarctic Slope Current |
title_full_unstemmed |
Remote Control of Filchner‐Ronne Ice Shelf Melt Rates by the Antarctic Slope Current |
title_sort |
remote control of filchner‐ronne ice shelf melt rates by the antarctic slope current |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03244475 https://hal.science/hal-03244475/document https://hal.science/hal-03244475/file/2020JC016550.pdf https://doi.org/10.1029/2020JC016550 |
genre |
Antarc* Antarctic Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ice Shelves Ronne Ice Shelf Weddell Sea |
genre_facet |
Antarc* Antarctic Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ice Shelves Ronne Ice Shelf Weddell Sea |
op_source |
ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.science/hal-03244475 Journal of Geophysical Research. Oceans, 2021, 126 (2), pp.e2020JC016550. ⟨10.1029/2020JC016550⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JC016550 info:eu-repo/grantAgreement//637770/EU/Water-mass transformation and Pathways In The Weddell Sea: uncovering the dynamics of a global climate chokepoint from In-situ measurements/WAPITI hal-03244475 https://hal.science/hal-03244475 https://hal.science/hal-03244475/document https://hal.science/hal-03244475/file/2020JC016550.pdf doi:10.1029/2020JC016550 WOS: 000624429800016 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2020JC016550 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
126 |
container_issue |
2 |
_version_ |
1797587698189336576 |
spelling |
ftinsu:oai:HAL:hal-03244475v1 2024-04-28T07:57:16+00:00 Remote Control of Filchner‐Ronne Ice Shelf Melt Rates by the Antarctic Slope Current Bull, Christopher Y. S. Jenkins, Adrian Jourdain, Nicolas Vaňková, Irena Holland, Paul R. Mathiot, Pierre Hausmann, Ute Sallée, Jean-Baptiste British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) ANR-15-CE01-0005,TROIS-AS,Vers un système de modélisation régionale océan / calotte / atmosphère(2015) European Project: 637770,H2020,ERC-2014-STG,WAPITI(2015) 2021-02 https://hal.science/hal-03244475 https://hal.science/hal-03244475/document https://hal.science/hal-03244475/file/2020JC016550.pdf https://doi.org/10.1029/2020JC016550 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JC016550 info:eu-repo/grantAgreement//637770/EU/Water-mass transformation and Pathways In The Weddell Sea: uncovering the dynamics of a global climate chokepoint from In-situ measurements/WAPITI hal-03244475 https://hal.science/hal-03244475 https://hal.science/hal-03244475/document https://hal.science/hal-03244475/file/2020JC016550.pdf doi:10.1029/2020JC016550 WOS: 000624429800016 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.science/hal-03244475 Journal of Geophysical Research. Oceans, 2021, 126 (2), pp.e2020JC016550. ⟨10.1029/2020JC016550⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2021 ftinsu https://doi.org/10.1029/2020JC016550 2024-04-05T00:37:03Z International audience Recent work on the Filchner-Ronne Ice Shelf (FRIS) system has shown that a redirection of the coastal current in the southeastern Weddell Sea could lead to a regime change in which an intrusion of warm Modified Circumpolar Deep Water results in large increases in the basal melt rate. Work to date has mostly focused on how increases in the Modified Circumpolar Deep Water crossing the continental shelf break leads directly to heat driven changes in melting in the ice-shelf cavity. In this study, we introduce a Weddell Sea regional ocean model configuration with static ice shelves. We evaluate a reference simulation against radar observations of melting, and find good agreement between the simulated and observed mean melt rates. We analyze 28 sensitivity experiments that simulate the influence of changes in remote water properties of the Antarctic Slope Current on basal melting in the FRIS. We find that remote changes in salinity quasi-linearly modulate the mean FRIS net melt rate. Changes in remote temperature quadratically vary the FRIS net melt rate. In both salinity and temperature perturbations, the response is rapid and transient, with a recovery time-scale of 5–15 years dependent on the size/type of perturbation. We show that the two types of perturbations lead to different changes on the continental shelf, and that ultimately different factors modulate the melt rates in the FRIS cavity. We discuss how these results, are relevant for ocean hindcast simulations, sea level, and melt rate projections of the FRIS. Article in Journal/Newspaper Antarc* Antarctic Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ice Shelves Ronne Ice Shelf Weddell Sea Institut national des sciences de l'Univers: HAL-INSU Journal of Geophysical Research: Oceans 126 2 |