Internal Tide Surface Signature and Incoherence in the North Atlantic
International audience Abstract Despite intensified efforts to better quantify Internal Tide dynamics over past decades, large uncertainties remain regarding their distribution and lifecycle in the ocean. In particular, internal tide incoherence (loss of time‐regularity) has limited our ability to c...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2024
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Online Access: | https://hal.science/hal-04614612 https://hal.science/hal-04614612/document https://hal.science/hal-04614612/file/Geophysical%20Research%20Letters%20-%202024%20-%20Lahaye%20-%20Internal%20Tide%20Surface%20Signature%20and%20Incoherence%20in%20the%20North%20Atlantic.pdf https://doi.org/10.1029/2024GL108508 |
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ftunigrenoble:oai:HAL:hal-04614612v1 |
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openpolar |
institution |
Open Polar |
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Université Grenoble Alpes: HAL |
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ftunigrenoble |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Lahaye, Noé Ponte, Aurélien Le Sommer, Julien Albert, Aurélie Internal Tide Surface Signature and Incoherence in the North Atlantic |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Abstract Despite intensified efforts to better quantify Internal Tide dynamics over past decades, large uncertainties remain regarding their distribution and lifecycle in the ocean. In particular, internal tide incoherence (loss of time‐regularity) has limited our ability to characterize, understand, and predict internal tides, challenging the exploitation of new‐generation wide‐swath satellite altimeters. Based on a realistic high‐resolution numerical simulation, we quantify the internal tide distribution and incoherence properties in the North Atlantic. We quantify IT incoherence for sea level and surface currents, and for different vertical modes independently. Our results show that typical decorrelation timescale induced by the mesoscale turbulence are rather short—below 25 days for the first vertical mode. It further exhibits a strong dependence of the internal tide incoherence with location, reflecting regions of enhanced eddy activity, and with vertical mode number—higher baroclinic modes being much more incoherent with shorter decorrelation timescale. |
author2 |
Océan Dynamique Observations Analyse (ODYSSEY) Université de Rennes (UR)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Inria Rennes – Bretagne Atlantique Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-IMT Atlantique (IMT Atlantique) Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT) Institut de Recherche Mathématique de Rennes (IRMAR) Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes) Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École normale supérieure - Rennes (ENS Rennes)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut Agro Rennes Angers Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Modélisation des écoulements océaniques multiéchelles / The MultiscalE Ocean Modelling (MEOM) 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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) |
format |
Article in Journal/Newspaper |
author |
Lahaye, Noé Ponte, Aurélien Le Sommer, Julien Albert, Aurélie |
author_facet |
Lahaye, Noé Ponte, Aurélien Le Sommer, Julien Albert, Aurélie |
author_sort |
Lahaye, Noé |
title |
Internal Tide Surface Signature and Incoherence in the North Atlantic |
title_short |
Internal Tide Surface Signature and Incoherence in the North Atlantic |
title_full |
Internal Tide Surface Signature and Incoherence in the North Atlantic |
title_fullStr |
Internal Tide Surface Signature and Incoherence in the North Atlantic |
title_full_unstemmed |
Internal Tide Surface Signature and Incoherence in the North Atlantic |
title_sort |
internal tide surface signature and incoherence in the north atlantic |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://hal.science/hal-04614612 https://hal.science/hal-04614612/document https://hal.science/hal-04614612/file/Geophysical%20Research%20Letters%20-%202024%20-%20Lahaye%20-%20Internal%20Tide%20Surface%20Signature%20and%20Incoherence%20in%20the%20North%20Atlantic.pdf https://doi.org/10.1029/2024GL108508 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-04614612 Geophysical Research Letters, 2024, 51 (12), ⟨10.1029/2024GL108508⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2024GL108508 hal-04614612 https://hal.science/hal-04614612 https://hal.science/hal-04614612/document https://hal.science/hal-04614612/file/Geophysical%20Research%20Letters%20-%202024%20-%20Lahaye%20-%20Internal%20Tide%20Surface%20Signature%20and%20Incoherence%20in%20the%20North%20Atlantic.pdf doi:10.1029/2024GL108508 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2024GL108508 |
container_title |
Geophysical Research Letters |
container_volume |
51 |
container_issue |
12 |
_version_ |
1810460939919556608 |
spelling |
ftunigrenoble:oai:HAL:hal-04614612v1 2024-09-15T18:21:54+00:00 Internal Tide Surface Signature and Incoherence in the North Atlantic Lahaye, Noé Ponte, Aurélien Le Sommer, Julien Albert, Aurélie Océan Dynamique Observations Analyse (ODYSSEY) Université de Rennes (UR)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Inria Rennes – Bretagne Atlantique Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-IMT Atlantique (IMT Atlantique) Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT) Institut de Recherche Mathématique de Rennes (IRMAR) Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes) Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École normale supérieure - Rennes (ENS Rennes)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut Agro Rennes Angers Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Modélisation des écoulements océaniques multiéchelles / The MultiscalE Ocean Modelling (MEOM) 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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) 2024-06-14 https://hal.science/hal-04614612 https://hal.science/hal-04614612/document https://hal.science/hal-04614612/file/Geophysical%20Research%20Letters%20-%202024%20-%20Lahaye%20-%20Internal%20Tide%20Surface%20Signature%20and%20Incoherence%20in%20the%20North%20Atlantic.pdf https://doi.org/10.1029/2024GL108508 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2024GL108508 hal-04614612 https://hal.science/hal-04614612 https://hal.science/hal-04614612/document https://hal.science/hal-04614612/file/Geophysical%20Research%20Letters%20-%202024%20-%20Lahaye%20-%20Internal%20Tide%20Surface%20Signature%20and%20Incoherence%20in%20the%20North%20Atlantic.pdf doi:10.1029/2024GL108508 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-04614612 Geophysical Research Letters, 2024, 51 (12), ⟨10.1029/2024GL108508⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2024 ftunigrenoble https://doi.org/10.1029/2024GL108508 2024-06-24T23:56:05Z International audience Abstract Despite intensified efforts to better quantify Internal Tide dynamics over past decades, large uncertainties remain regarding their distribution and lifecycle in the ocean. In particular, internal tide incoherence (loss of time‐regularity) has limited our ability to characterize, understand, and predict internal tides, challenging the exploitation of new‐generation wide‐swath satellite altimeters. Based on a realistic high‐resolution numerical simulation, we quantify the internal tide distribution and incoherence properties in the North Atlantic. We quantify IT incoherence for sea level and surface currents, and for different vertical modes independently. Our results show that typical decorrelation timescale induced by the mesoscale turbulence are rather short—below 25 days for the first vertical mode. It further exhibits a strong dependence of the internal tide incoherence with location, reflecting regions of enhanced eddy activity, and with vertical mode number—higher baroclinic modes being much more incoherent with shorter decorrelation timescale. Article in Journal/Newspaper North Atlantic Université Grenoble Alpes: HAL Geophysical Research Letters 51 12 |