Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data
International audience Observations of wind and ocean surface velocity vectors by along-track interferometry (ATI) with the synthetic aperture radar (SAR) are not only important for direct applications but also to increase understandings of ocean upper layer mixing, air-ocean interactions, and mappi...
Published in: | IEEE Transactions on Geoscience and Remote Sensing |
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Online Access: | https://hal.science/hal-04203774 https://doi.org/10.1109/TGRS.2022.3147490 |
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ftinsu:oai:HAL:hal-04203774v1 2024-04-14T08:16:50+00:00 Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data Caldarella, Nina Lopez-Dekker, Paco Prats-Iraola, Pau Nouguier, Frederic Chapron, Bertrand Zonno, Mariantonietta Rodriguez-Cassola, Marc 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) 2022 https://hal.science/hal-04203774 https://doi.org/10.1109/TGRS.2022.3147490 en eng HAL CCSD Institute of Electrical and Electronics Engineers info:eu-repo/semantics/altIdentifier/doi/10.1109/TGRS.2022.3147490 hal-04203774 https://hal.science/hal-04203774 doi:10.1109/TGRS.2022.3147490 ISSN: 0196-2892 IEEE Transactions on Geoscience and Remote Sensing https://hal.science/hal-04203774 IEEE Transactions on Geoscience and Remote Sensing, 2022, 60 (5223412), pp.1-12. ⟨10.1109/TGRS.2022.3147490⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2022 ftinsu https://doi.org/10.1109/TGRS.2022.3147490 2024-03-21T17:06:29Z International audience Observations of wind and ocean surface velocity vectors by along-track interferometry (ATI) with the synthetic aperture radar (SAR) are not only important for direct applications but also to increase understandings of ocean upper layer mixing, air-ocean interactions, and mapping submesoscale (1-10 km) structures. An experimental bidirectional (BiDi) ATI acquisition mode of TanDEM-X observes with two squinted beams separated by an angle of approximately 13.2 degrees in azimuth on the ground. The baseline is very short, and the along-track interferometric phase (ATI phase) of the ocean surface in the line-of-sight direction of the beams can be interpreted as a total Doppler velocity. The 2-D Doppler velocity field will thus include wind-wave detected motions. In this article, Doppler velocity fields acquired from this experimental acquisition mode are presented. The sequential retrieval of wind vector and total surface current vectors (TSCV) is demonstrated on the BiDi TanDEM-X data. The retrieval algorithm builds on existing geophysical model functions (GMFs) of normalized radar cross section (NRCS) and Doppler velocity. XMOD2 and a GMF based on the Elfouhaily ocean wave spectrum coupled with a Kirchhoff approximation (EOWS&KA) are used. The retrieved wind fields are generally consistent with the European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-5. While the ATI phase errors are small, the retrieved TSCV field looks promising. Acquisitions were located at sea over the tip of the Novaya Zemlya in Russia and over an area near Tromso, Norway. Article in Journal/Newspaper Novaya Zemlya Tromso Tromso Institut national des sciences de l'Univers: HAL-INSU Norway Tromso ENVELOPE(16.546,16.546,68.801,68.801) IEEE Transactions on Geoscience and Remote Sensing 60 1 12 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Caldarella, Nina Lopez-Dekker, Paco Prats-Iraola, Pau Nouguier, Frederic Chapron, Bertrand Zonno, Mariantonietta Rodriguez-Cassola, Marc Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Observations of wind and ocean surface velocity vectors by along-track interferometry (ATI) with the synthetic aperture radar (SAR) are not only important for direct applications but also to increase understandings of ocean upper layer mixing, air-ocean interactions, and mapping submesoscale (1-10 km) structures. An experimental bidirectional (BiDi) ATI acquisition mode of TanDEM-X observes with two squinted beams separated by an angle of approximately 13.2 degrees in azimuth on the ground. The baseline is very short, and the along-track interferometric phase (ATI phase) of the ocean surface in the line-of-sight direction of the beams can be interpreted as a total Doppler velocity. The 2-D Doppler velocity field will thus include wind-wave detected motions. In this article, Doppler velocity fields acquired from this experimental acquisition mode are presented. The sequential retrieval of wind vector and total surface current vectors (TSCV) is demonstrated on the BiDi TanDEM-X data. The retrieval algorithm builds on existing geophysical model functions (GMFs) of normalized radar cross section (NRCS) and Doppler velocity. XMOD2 and a GMF based on the Elfouhaily ocean wave spectrum coupled with a Kirchhoff approximation (EOWS&KA) are used. The retrieved wind fields are generally consistent with the European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-5. While the ATI phase errors are small, the retrieved TSCV field looks promising. Acquisitions were located at sea over the tip of the Novaya Zemlya in Russia and over an area near Tromso, Norway. |
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) |
format |
Article in Journal/Newspaper |
author |
Caldarella, Nina Lopez-Dekker, Paco Prats-Iraola, Pau Nouguier, Frederic Chapron, Bertrand Zonno, Mariantonietta Rodriguez-Cassola, Marc |
author_facet |
Caldarella, Nina Lopez-Dekker, Paco Prats-Iraola, Pau Nouguier, Frederic Chapron, Bertrand Zonno, Mariantonietta Rodriguez-Cassola, Marc |
author_sort |
Caldarella, Nina |
title |
Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data |
title_short |
Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data |
title_full |
Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data |
title_fullStr |
Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data |
title_full_unstemmed |
Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data |
title_sort |
retrieval of wind and total surface current vectors using experimental bidirectional along-track interferometric tandem-x data |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-04203774 https://doi.org/10.1109/TGRS.2022.3147490 |
long_lat |
ENVELOPE(16.546,16.546,68.801,68.801) |
geographic |
Norway Tromso |
geographic_facet |
Norway Tromso |
genre |
Novaya Zemlya Tromso Tromso |
genre_facet |
Novaya Zemlya Tromso Tromso |
op_source |
ISSN: 0196-2892 IEEE Transactions on Geoscience and Remote Sensing https://hal.science/hal-04203774 IEEE Transactions on Geoscience and Remote Sensing, 2022, 60 (5223412), pp.1-12. ⟨10.1109/TGRS.2022.3147490⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1109/TGRS.2022.3147490 hal-04203774 https://hal.science/hal-04203774 doi:10.1109/TGRS.2022.3147490 |
op_doi |
https://doi.org/10.1109/TGRS.2022.3147490 |
container_title |
IEEE Transactions on Geoscience and Remote Sensing |
container_volume |
60 |
container_start_page |
1 |
op_container_end_page |
12 |
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1796315593307062272 |