Simulating or prescribing the influence of tides on the Amundsen Sea ice shelves
International audience The representation of tides in regional ocean simulations of the Amundsen Sea enhances ice-shelf melting, with weakest effects for Pine Island and Thwaites (< +10 %) and strongest effects for Dotson, Cosgrove and Abbot (> + 30 %). Tides increase vertical mixing throughou...
Published in: | Ocean Modelling |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2019
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Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-03084236 https://doi.org/10.1016/j.ocemod.2018.11.001 |
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ftsorbonneuniv:oai:HAL:hal-03084236v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
Thwaites Pine Island NEMO Ice shelf cavity Ice shelf melt Tides Amundsen Sea [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Thwaites Pine Island NEMO Ice shelf cavity Ice shelf melt Tides Amundsen Sea [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Jourdain, Nicolas Molines, Jean-Marc Le Sommer, Julien Mathiot, Pierre Chanut, Jérôme de Lavergne, Casimir Madec, Gurvan Simulating or prescribing the influence of tides on the Amundsen Sea ice shelves |
topic_facet |
Thwaites Pine Island NEMO Ice shelf cavity Ice shelf melt Tides Amundsen Sea [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The representation of tides in regional ocean simulations of the Amundsen Sea enhances ice-shelf melting, with weakest effects for Pine Island and Thwaites (< +10 %) and strongest effects for Dotson, Cosgrove and Abbot (> + 30 %). Tides increase vertical mixing throughout the water column along the continental shelf break. Diurnal tides induce topographically trapped vorticity waves along the continental shelf break, likely underpinning the tidal rectification (residual circulation) simulated in the Dotson–Getz Trough. However, the primary effect by which tides affect ice-shelf melting is the increase of ice/ocean exchanges, rather than the modification of water masses on the continental shelf. Tide-induced velocities strengthen turbulent heat fluxes at the ice/ocean interface, thereby increasing melt rates. Approximately a third of this effect is counterbalanced by the resulting release of cold melt water that reduces melt downstream along the meltwater flow. The relatively weak tide-induced melting underneath Pine Island and Thwaites could be partly related to their particularly thick water column, which limits the presence of quarter wavelength tidal resonance. No sensitivity to the position of Pine Island and Thwaites with respect to the M2 critical latitude is found. We refine and evaluate existing methodologies to prescribe the effect of tides on ice-shelf melt rates in ocean models that do not explicitely include tidal forcing. The best results are obtained by prescribing spatially-dependent tidal top-boundary-layer velocities in the melt equations. These velocities can be approximated as a linear function of existing barotropic tidal solutions. A correction factor needs to be applied to account for the additional melt-induced circulation associated with tides and to reproduce the relative importance of dynamical and thermodynamical processes. |
author2 |
Institut des Géosciences de l’Environnement (IGE) Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Met Office Hadley Centre for Climate Change (MOHC) United Kingdom Met Office Exeter Mercator Océan Société Civile CNRS Ifremer IRD Météo-France SHOM Nucleus for European Modeling of the Ocean (NEMO R&D ) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-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)-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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU) ANR-15-CE01-0005,TROIS-AS,Vers un système de modélisation régionale océan / calotte / atmosphère(2015) ANR-10-LABX-0056,OSUG@2020,Innovative strategies for observing and modelling natural systems(2010) |
format |
Article in Journal/Newspaper |
author |
Jourdain, Nicolas Molines, Jean-Marc Le Sommer, Julien Mathiot, Pierre Chanut, Jérôme de Lavergne, Casimir Madec, Gurvan |
author_facet |
Jourdain, Nicolas Molines, Jean-Marc Le Sommer, Julien Mathiot, Pierre Chanut, Jérôme de Lavergne, Casimir Madec, Gurvan |
author_sort |
Jourdain, Nicolas |
title |
Simulating or prescribing the influence of tides on the Amundsen Sea ice shelves |
title_short |
Simulating or prescribing the influence of tides on the Amundsen Sea ice shelves |
title_full |
Simulating or prescribing the influence of tides on the Amundsen Sea ice shelves |
title_fullStr |
Simulating or prescribing the influence of tides on the Amundsen Sea ice shelves |
title_full_unstemmed |
Simulating or prescribing the influence of tides on the Amundsen Sea ice shelves |
title_sort |
simulating or prescribing the influence of tides on the amundsen sea ice shelves |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.archives-ouvertes.fr/hal-03084236 https://doi.org/10.1016/j.ocemod.2018.11.001 |
long_lat |
ENVELOPE(-114.775,-114.775,-73.231,-73.231) ENVELOPE(-145.217,-145.217,-76.550,-76.550) |
geographic |
Amundsen Sea Dotson-Getz Trough Getz |
geographic_facet |
Amundsen Sea Dotson-Getz Trough Getz |
genre |
Amundsen Sea Ice Shelf Ice Shelves Sea ice |
genre_facet |
Amundsen Sea Ice Shelf Ice Shelves Sea ice |
op_source |
ISSN: 1463-5003 Ocean Modelling https://hal.archives-ouvertes.fr/hal-03084236 Ocean Modelling, Elsevier, 2019, 133, pp.44-55. ⟨10.1016/j.ocemod.2018.11.001⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ocemod.2018.11.001 hal-03084236 https://hal.archives-ouvertes.fr/hal-03084236 doi:10.1016/j.ocemod.2018.11.001 WOS: WOS:000454511200004 |
op_doi |
https://doi.org/10.1016/j.ocemod.2018.11.001 |
container_title |
Ocean Modelling |
container_volume |
133 |
container_start_page |
44 |
op_container_end_page |
55 |
_version_ |
1766375666151849984 |
spelling |
ftsorbonneuniv:oai:HAL:hal-03084236v1 2023-05-15T13:23:50+02:00 Simulating or prescribing the influence of tides on the Amundsen Sea ice shelves Jourdain, Nicolas Molines, Jean-Marc Le Sommer, Julien Mathiot, Pierre Chanut, Jérôme de Lavergne, Casimir Madec, Gurvan Institut des Géosciences de l’Environnement (IGE) Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Met Office Hadley Centre for Climate Change (MOHC) United Kingdom Met Office Exeter Mercator Océan Société Civile CNRS Ifremer IRD Météo-France SHOM Nucleus for European Modeling of the Ocean (NEMO R&D ) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-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)-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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU) ANR-15-CE01-0005,TROIS-AS,Vers un système de modélisation régionale océan / calotte / atmosphère(2015) ANR-10-LABX-0056,OSUG@2020,Innovative strategies for observing and modelling natural systems(2010) 2019-01 https://hal.archives-ouvertes.fr/hal-03084236 https://doi.org/10.1016/j.ocemod.2018.11.001 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ocemod.2018.11.001 hal-03084236 https://hal.archives-ouvertes.fr/hal-03084236 doi:10.1016/j.ocemod.2018.11.001 WOS: WOS:000454511200004 ISSN: 1463-5003 Ocean Modelling https://hal.archives-ouvertes.fr/hal-03084236 Ocean Modelling, Elsevier, 2019, 133, pp.44-55. ⟨10.1016/j.ocemod.2018.11.001⟩ Thwaites Pine Island NEMO Ice shelf cavity Ice shelf melt Tides Amundsen Sea [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2019 ftsorbonneuniv https://doi.org/10.1016/j.ocemod.2018.11.001 2022-01-04T23:38:36Z International audience The representation of tides in regional ocean simulations of the Amundsen Sea enhances ice-shelf melting, with weakest effects for Pine Island and Thwaites (< +10 %) and strongest effects for Dotson, Cosgrove and Abbot (> + 30 %). Tides increase vertical mixing throughout the water column along the continental shelf break. Diurnal tides induce topographically trapped vorticity waves along the continental shelf break, likely underpinning the tidal rectification (residual circulation) simulated in the Dotson–Getz Trough. However, the primary effect by which tides affect ice-shelf melting is the increase of ice/ocean exchanges, rather than the modification of water masses on the continental shelf. Tide-induced velocities strengthen turbulent heat fluxes at the ice/ocean interface, thereby increasing melt rates. Approximately a third of this effect is counterbalanced by the resulting release of cold melt water that reduces melt downstream along the meltwater flow. The relatively weak tide-induced melting underneath Pine Island and Thwaites could be partly related to their particularly thick water column, which limits the presence of quarter wavelength tidal resonance. No sensitivity to the position of Pine Island and Thwaites with respect to the M2 critical latitude is found. We refine and evaluate existing methodologies to prescribe the effect of tides on ice-shelf melt rates in ocean models that do not explicitely include tidal forcing. The best results are obtained by prescribing spatially-dependent tidal top-boundary-layer velocities in the melt equations. These velocities can be approximated as a linear function of existing barotropic tidal solutions. A correction factor needs to be applied to account for the additional melt-induced circulation associated with tides and to reproduce the relative importance of dynamical and thermodynamical processes. Article in Journal/Newspaper Amundsen Sea Ice Shelf Ice Shelves Sea ice HAL Sorbonne Université Amundsen Sea Dotson-Getz Trough ENVELOPE(-114.775,-114.775,-73.231,-73.231) Getz ENVELOPE(-145.217,-145.217,-76.550,-76.550) Ocean Modelling 133 44 55 |