Vertical structure of buoyancy transport by ocean baroclinic turbulence
International audience Ocean mesoscale eddies enhance meridional buoyancy transport, notably in the Antarctic Circumpolar Current where they contribute to setting the deep stratification of the neighboring ocean basins. The much-needed parameterization of this buoyancy transport in global climate mo...
Published in: | Geophysical Research Letters |
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Online Access: | https://hal.science/hal-04301208 https://hal.science/hal-04301208/document https://hal.science/hal-04301208/file/GRLMeunier23.pdf https://doi.org/10.1029/2023GL103948 |
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ftuniparissaclay:oai:HAL:hal-04301208v1 2024-05-19T07:31:46+00:00 Vertical structure of buoyancy transport by ocean baroclinic turbulence Meunier, Julie Miquel, Benjamin Gallet, Basile Service de physique de l'état condensé (SPEC - UMR3680) Institut Rayonnement Matière de Saclay (DRF) (IRAMIS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Mecanique des Fluides et d'Acoustique (LMFA) École Centrale de Lyon (ECL) Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) European Project: 757239,FLAVE 2023-08-01 https://hal.science/hal-04301208 https://hal.science/hal-04301208/document https://hal.science/hal-04301208/file/GRLMeunier23.pdf https://doi.org/10.1029/2023GL103948 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2023GL103948 info:eu-repo/grantAgreement//757239/EU/Energetics of natural turbulent flows: the impact of waves and radiation./FLAVE hal-04301208 https://hal.science/hal-04301208 https://hal.science/hal-04301208/document https://hal.science/hal-04301208/file/GRLMeunier23.pdf doi:10.1029/2023GL103948 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-04301208 Geophysical Research Letters, 2023, 50 (17), ⟨10.1029/2023GL103948⟩ https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2023GL103948 [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2023 ftuniparissaclay https://doi.org/10.1029/2023GL103948 2024-04-22T17:26:49Z International audience Ocean mesoscale eddies enhance meridional buoyancy transport, notably in the Antarctic Circumpolar Current where they contribute to setting the deep stratification of the neighboring ocean basins. The much-needed parameterization of this buoyancy transport in global climate models requires a theory for the overall flux, but also for its vertical structure inside the fluid column. Based on the quasi-geostrophic dynamics of an idealized patch of ocean hosting an arbitrary vertically sheared zonal flow, we provide a quantitative prediction for the vertical structure of the buoyancy flux without adjustable parameters. The prediction agrees quantitatively with meridional flux profiles obtained through numerical simulations of an idealized patch of ocean with realistic parameter values. This work empowers modelers with an explicit and physically based expression for the vertical profile of buoyancy transport by ocean baroclinic turbulence, as opposed to the common practice of using arbitrary prescriptions for the depth-dependence of the transport coefficients. Article in Journal/Newspaper Antarc* Antarctic Archives ouvertes de Paris-Saclay Geophysical Research Letters 50 17 |
institution |
Open Polar |
collection |
Archives ouvertes de Paris-Saclay |
op_collection_id |
ftuniparissaclay |
language |
English |
topic |
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
spellingShingle |
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Meunier, Julie Miquel, Benjamin Gallet, Basile Vertical structure of buoyancy transport by ocean baroclinic turbulence |
topic_facet |
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
International audience Ocean mesoscale eddies enhance meridional buoyancy transport, notably in the Antarctic Circumpolar Current where they contribute to setting the deep stratification of the neighboring ocean basins. The much-needed parameterization of this buoyancy transport in global climate models requires a theory for the overall flux, but also for its vertical structure inside the fluid column. Based on the quasi-geostrophic dynamics of an idealized patch of ocean hosting an arbitrary vertically sheared zonal flow, we provide a quantitative prediction for the vertical structure of the buoyancy flux without adjustable parameters. The prediction agrees quantitatively with meridional flux profiles obtained through numerical simulations of an idealized patch of ocean with realistic parameter values. This work empowers modelers with an explicit and physically based expression for the vertical profile of buoyancy transport by ocean baroclinic turbulence, as opposed to the common practice of using arbitrary prescriptions for the depth-dependence of the transport coefficients. |
author2 |
Service de physique de l'état condensé (SPEC - UMR3680) Institut Rayonnement Matière de Saclay (DRF) (IRAMIS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Mecanique des Fluides et d'Acoustique (LMFA) École Centrale de Lyon (ECL) Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) European Project: 757239,FLAVE |
format |
Article in Journal/Newspaper |
author |
Meunier, Julie Miquel, Benjamin Gallet, Basile |
author_facet |
Meunier, Julie Miquel, Benjamin Gallet, Basile |
author_sort |
Meunier, Julie |
title |
Vertical structure of buoyancy transport by ocean baroclinic turbulence |
title_short |
Vertical structure of buoyancy transport by ocean baroclinic turbulence |
title_full |
Vertical structure of buoyancy transport by ocean baroclinic turbulence |
title_fullStr |
Vertical structure of buoyancy transport by ocean baroclinic turbulence |
title_full_unstemmed |
Vertical structure of buoyancy transport by ocean baroclinic turbulence |
title_sort |
vertical structure of buoyancy transport by ocean baroclinic turbulence |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04301208 https://hal.science/hal-04301208/document https://hal.science/hal-04301208/file/GRLMeunier23.pdf https://doi.org/10.1029/2023GL103948 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-04301208 Geophysical Research Letters, 2023, 50 (17), ⟨10.1029/2023GL103948⟩ https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2023GL103948 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2023GL103948 info:eu-repo/grantAgreement//757239/EU/Energetics of natural turbulent flows: the impact of waves and radiation./FLAVE hal-04301208 https://hal.science/hal-04301208 https://hal.science/hal-04301208/document https://hal.science/hal-04301208/file/GRLMeunier23.pdf doi:10.1029/2023GL103948 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2023GL103948 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
17 |
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1799469657812369408 |