Ocean Eddy Signature on SAR Derived Sea Ice Drift and Vorticity
International audience In the Arctic Ocean, the observation of mesoscale eddies is impeded by the presence of sea ice. To address this problem, we develop a new method of ocean eddy detection based on their signature in sea ice vorticity retrieved from synthetic aperture radar (SAR) images. We exami...
Published in: | Geophysical Research Letters |
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ftanrparis:oai:HAL:insu-03683271v1 2024-09-09T19:25:15+00:00 Ocean Eddy Signature on SAR Derived Sea Ice Drift and Vorticity Cassianides, Angelina Lique, Camille Korosov, Anton 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) ANR-18-CE01-0010,ImMEDIAT,Interactions entre la dynamique mésoéchelle et la glace de mer en Arctic(2018) 2021 https://insu.hal.science/insu-03683271 https://insu.hal.science/insu-03683271/document https://insu.hal.science/insu-03683271/file/81640.pdf https://doi.org/10.1029/2020GL092066 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2020GL092066 insu-03683271 https://insu.hal.science/insu-03683271 https://insu.hal.science/insu-03683271/document https://insu.hal.science/insu-03683271/file/81640.pdf BIBCODE: 2021GeoRL.4892066C doi:10.1029/2020GL092066 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-03683271 Geophysical Research Letters, 2021, 48, ⟨10.1029/2020GL092066⟩ mesoscale eddies SAR images sea ice eddies interaction [SDU]Sciences of the Universe [physics] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2021 ftanrparis https://doi.org/10.1029/2020GL092066 2024-07-12T11:00:11Z International audience In the Arctic Ocean, the observation of mesoscale eddies is impeded by the presence of sea ice. To address this problem, we develop a new method of ocean eddy detection based on their signature in sea ice vorticity retrieved from synthetic aperture radar (SAR) images. We examine the case of one eddy in October 2017 in the marginal ice zone of the Canadian Basin, which was sampled by mooring observations. Although the eddy could not be identified by visual inspection of the SAR images, its signature is revealed as a dipole anomaly in sea ice vorticity, which suggests that the eddy is a dipole composed of a cyclone and an anticyclone, with a horizontal scale of 80-100 km and persisted over a week. The robustness of our method will allow us to detect more eddies as more SAR observations become available in the future. Article in Journal/Newspaper Arctic Arctic Ocean Sea ice Portail HAL-ANR (Agence Nationale de la Recherche) Arctic Arctic Ocean Geophysical Research Letters 48 6 |
institution |
Open Polar |
collection |
Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
mesoscale eddies SAR images sea ice eddies interaction [SDU]Sciences of the Universe [physics] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
mesoscale eddies SAR images sea ice eddies interaction [SDU]Sciences of the Universe [physics] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Cassianides, Angelina Lique, Camille Korosov, Anton Ocean Eddy Signature on SAR Derived Sea Ice Drift and Vorticity |
topic_facet |
mesoscale eddies SAR images sea ice eddies interaction [SDU]Sciences of the Universe [physics] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience In the Arctic Ocean, the observation of mesoscale eddies is impeded by the presence of sea ice. To address this problem, we develop a new method of ocean eddy detection based on their signature in sea ice vorticity retrieved from synthetic aperture radar (SAR) images. We examine the case of one eddy in October 2017 in the marginal ice zone of the Canadian Basin, which was sampled by mooring observations. Although the eddy could not be identified by visual inspection of the SAR images, its signature is revealed as a dipole anomaly in sea ice vorticity, which suggests that the eddy is a dipole composed of a cyclone and an anticyclone, with a horizontal scale of 80-100 km and persisted over a week. The robustness of our method will allow us to detect more eddies as more SAR observations become available in the future. |
author2 |
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) ANR-18-CE01-0010,ImMEDIAT,Interactions entre la dynamique mésoéchelle et la glace de mer en Arctic(2018) |
format |
Article in Journal/Newspaper |
author |
Cassianides, Angelina Lique, Camille Korosov, Anton |
author_facet |
Cassianides, Angelina Lique, Camille Korosov, Anton |
author_sort |
Cassianides, Angelina |
title |
Ocean Eddy Signature on SAR Derived Sea Ice Drift and Vorticity |
title_short |
Ocean Eddy Signature on SAR Derived Sea Ice Drift and Vorticity |
title_full |
Ocean Eddy Signature on SAR Derived Sea Ice Drift and Vorticity |
title_fullStr |
Ocean Eddy Signature on SAR Derived Sea Ice Drift and Vorticity |
title_full_unstemmed |
Ocean Eddy Signature on SAR Derived Sea Ice Drift and Vorticity |
title_sort |
ocean eddy signature on sar derived sea ice drift and vorticity |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://insu.hal.science/insu-03683271 https://insu.hal.science/insu-03683271/document https://insu.hal.science/insu-03683271/file/81640.pdf https://doi.org/10.1029/2020GL092066 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-03683271 Geophysical Research Letters, 2021, 48, ⟨10.1029/2020GL092066⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020GL092066 insu-03683271 https://insu.hal.science/insu-03683271 https://insu.hal.science/insu-03683271/document https://insu.hal.science/insu-03683271/file/81640.pdf BIBCODE: 2021GeoRL.4892066C doi:10.1029/2020GL092066 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2020GL092066 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
6 |
_version_ |
1809895007174262784 |