Three-dimensional reconstruction of oceanic mesoscale currents from surface information
International audience The ability to reconstruct the three‐dimensional (3D) dynamics of the ocean by an effective version of Surface Quasi‐Geostrophy (eSQG) is examined. Using the fact that surface density plays an analogous role as interior potential vorticity (PV), the eSQG method consists in inv...
Published in: | Journal of Geophysical Research |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2008
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Online Access: | https://hal.science/hal-02051290 https://hal.science/hal-02051290/document https://hal.science/hal-02051290/file/2007JC004692.pdf https://doi.org/10.1029/2007JC004692 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
3D dynamics reconstruction SST Surface Quasi‐Geostrophy [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] |
spellingShingle |
3D dynamics reconstruction SST Surface Quasi‐Geostrophy [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] Capet, Xavier Hua, Bach Lien Mcwilliams, James C. Isern-Fontanet, Jordi Lapeyre, Guillaume Klein, Patrice Chapron, Bertrand Hecht, Matthew Three-dimensional reconstruction of oceanic mesoscale currents from surface information |
topic_facet |
3D dynamics reconstruction SST Surface Quasi‐Geostrophy [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] |
description |
International audience The ability to reconstruct the three‐dimensional (3D) dynamics of the ocean by an effective version of Surface Quasi‐Geostrophy (eSQG) is examined. Using the fact that surface density plays an analogous role as interior potential vorticity (PV), the eSQG method consists in inverting the QG PV generated by sea‐surface density only. We also make the extra assumption that sea‐surface temperature (SST) anomalies fully represent surface density anomalies. This approach requires a single snapshot of SST and the setup of two parameters: the mean Brunt‐Väisälä frequency and a parameter that determines the energy level at the ocean surface. The validity of this approach is tested using an Ocean General Circulation Model simulation representing the North Atlantic in winter. It is shown that the method is quite successful in reconstructing the velocity field at the ocean surface for mesoscales (between 30 and 300 km). The eSQG framework can also be applied to reconstruct subsurface fields using surface information. Results show that the reconstruction of velocities and vorticity from surface fields is reasonably good for the upper 500 m and that the success of the method mainly depends on the quality of the SST as a proxy of the density anomaly at the base of the mixed layer. This situation happens after a mixed‐layer deepening period. Therefore the ideal situation for the application of this method would be after strong wind events. |
author2 |
Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Department of Atmospheric Sciences Los Angeles University of California Los Angeles (UCLA) University of California (UC)-University of California (UC) Laboratoire d'Océanographie Spatiale (LOS) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Los Alamos National Laboratory (LANL) |
format |
Article in Journal/Newspaper |
author |
Capet, Xavier Hua, Bach Lien Mcwilliams, James C. Isern-Fontanet, Jordi Lapeyre, Guillaume Klein, Patrice Chapron, Bertrand Hecht, Matthew |
author_facet |
Capet, Xavier Hua, Bach Lien Mcwilliams, James C. Isern-Fontanet, Jordi Lapeyre, Guillaume Klein, Patrice Chapron, Bertrand Hecht, Matthew |
author_sort |
Capet, Xavier |
title |
Three-dimensional reconstruction of oceanic mesoscale currents from surface information |
title_short |
Three-dimensional reconstruction of oceanic mesoscale currents from surface information |
title_full |
Three-dimensional reconstruction of oceanic mesoscale currents from surface information |
title_fullStr |
Three-dimensional reconstruction of oceanic mesoscale currents from surface information |
title_full_unstemmed |
Three-dimensional reconstruction of oceanic mesoscale currents from surface information |
title_sort |
three-dimensional reconstruction of oceanic mesoscale currents from surface information |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-02051290 https://hal.science/hal-02051290/document https://hal.science/hal-02051290/file/2007JC004692.pdf https://doi.org/10.1029/2007JC004692 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-02051290 Journal of Geophysical Research, 2008, 113 (C9), ⟨10.1029/2007JC004692⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2007JC004692 hal-02051290 https://hal.science/hal-02051290 https://hal.science/hal-02051290/document https://hal.science/hal-02051290/file/2007JC004692.pdf doi:10.1029/2007JC004692 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2007JC004692 |
container_title |
Journal of Geophysical Research |
container_volume |
113 |
container_issue |
C9 |
_version_ |
1801379962709606400 |
spelling |
ftsorbonneuniv:oai:HAL:hal-02051290v1 2024-06-09T07:48:18+00:00 Three-dimensional reconstruction of oceanic mesoscale currents from surface information Capet, Xavier Hua, Bach Lien Mcwilliams, James C. Isern-Fontanet, Jordi Lapeyre, Guillaume Klein, Patrice Chapron, Bertrand Hecht, Matthew Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Department of Atmospheric Sciences Los Angeles University of California Los Angeles (UCLA) University of California (UC)-University of California (UC) Laboratoire d'Océanographie Spatiale (LOS) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Los Alamos National Laboratory (LANL) 2008 https://hal.science/hal-02051290 https://hal.science/hal-02051290/document https://hal.science/hal-02051290/file/2007JC004692.pdf https://doi.org/10.1029/2007JC004692 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2007JC004692 hal-02051290 https://hal.science/hal-02051290 https://hal.science/hal-02051290/document https://hal.science/hal-02051290/file/2007JC004692.pdf doi:10.1029/2007JC004692 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-02051290 Journal of Geophysical Research, 2008, 113 (C9), ⟨10.1029/2007JC004692⟩ 3D dynamics reconstruction SST Surface Quasi‐Geostrophy [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] info:eu-repo/semantics/article Journal articles 2008 ftsorbonneuniv https://doi.org/10.1029/2007JC004692 2024-05-16T23:55:59Z International audience The ability to reconstruct the three‐dimensional (3D) dynamics of the ocean by an effective version of Surface Quasi‐Geostrophy (eSQG) is examined. Using the fact that surface density plays an analogous role as interior potential vorticity (PV), the eSQG method consists in inverting the QG PV generated by sea‐surface density only. We also make the extra assumption that sea‐surface temperature (SST) anomalies fully represent surface density anomalies. This approach requires a single snapshot of SST and the setup of two parameters: the mean Brunt‐Väisälä frequency and a parameter that determines the energy level at the ocean surface. The validity of this approach is tested using an Ocean General Circulation Model simulation representing the North Atlantic in winter. It is shown that the method is quite successful in reconstructing the velocity field at the ocean surface for mesoscales (between 30 and 300 km). The eSQG framework can also be applied to reconstruct subsurface fields using surface information. Results show that the reconstruction of velocities and vorticity from surface fields is reasonably good for the upper 500 m and that the success of the method mainly depends on the quality of the SST as a proxy of the density anomaly at the base of the mixed layer. This situation happens after a mixed‐layer deepening period. Therefore the ideal situation for the application of this method would be after strong wind events. Article in Journal/Newspaper North Atlantic HAL Sorbonne Université Journal of Geophysical Research 113 C9 |