Correction and Accuracy of High- and Low-Resolution CTD Data from Animal-Borne Instruments
International audience Most available CTD Satellite Relay Data Logger (CTD-SRDL) profiles are heavily compressed before satellite transmission. High-resolution profiles recorded at the sampling frequency of 0.5 Hz are, however, available upon physical retrieval of the logger. Between 2014 and 2018,...
Published in: | Journal of Atmospheric and Oceanic Technology |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2019
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Subjects: | |
Online Access: | https://hal.science/hal-02192465 https://hal.science/hal-02192465/document https://hal.science/hal-02192465/file/Siegelman_etal_JoAaOT_2019.pdf https://doi.org/10.1175/JTECH-D-18-0170.1 |
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ftuniversailles:oai:HAL:hal-02192465v1 |
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openpolar |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
In situ oceanic observations Data processing Algorithms ACL [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
In situ oceanic observations Data processing Algorithms ACL [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology Siegelman, Lia Roquet, Fabien Mensah, Vigan Rivière, Pascal Pauthenet, Etienne Picard, Baptiste Guinet, Christophe Correction and Accuracy of High- and Low-Resolution CTD Data from Animal-Borne Instruments |
topic_facet |
In situ oceanic observations Data processing Algorithms ACL [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Most available CTD Satellite Relay Data Logger (CTD-SRDL) profiles are heavily compressed before satellite transmission. High-resolution profiles recorded at the sampling frequency of 0.5 Hz are, however, available upon physical retrieval of the logger. Between 2014 and 2018, several loggers deployed on elephant seals in the Southern Ocean have been set in continuous recording mode, capturing both the ascent and descent for over 60 profiles per day during several months, opening new horizons for the physical oceanography community. Taking advantage of a new dataset made of seven such loggers, a postprocessing procedure is proposed and validated to improve the quality of all CTD-SRDL data: that is, both high-resolution profiles and compressed low-resolution ones. First, temperature and conductivity are corrected for a thermal mass effect. Then salinity spiking and density inversion are removed by adjusting salinity while leaving temperature unchanged. This method, applied here to more than 50 000 profiles, yields significant and systematic improvements in both temperature and salinity, particularly in regions of rapid temperature variation. The continuous high-resolution dataset is then used to provide updated accuracy estimates of CTD-SRDL data. For high-resolution data, accuracies are estimated to be of +/- 0.02 degrees C for temperature and +/- 0.03 g kg(-1) for salinity. For low-resolution data, transmitted data points have similar accuracies; however, reconstructed temperature profiles have a reduced accuracy associated with the vertical interpolation of +/- 0.04 degrees C and a nearly unchanged salinity accuracy of +/- 0.03 g kg(-1). |
author2 |
Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Department of Environmental Science and Engineering Pasadena (ESE) California Institute of Technology (CALTECH) Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) Department of Marine Sciences Gothenburg Göteborgs Universitet = University of Gothenburg (GU) Institute of Low Temperature Science Sapporo Hokkaido University Sapporo, Japan Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) CNES-TOSCA IPEV CORIOLIS in situ ocean observation program CNES LabexMer doctoral fellowship ANR-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010) |
format |
Article in Journal/Newspaper |
author |
Siegelman, Lia Roquet, Fabien Mensah, Vigan Rivière, Pascal Pauthenet, Etienne Picard, Baptiste Guinet, Christophe |
author_facet |
Siegelman, Lia Roquet, Fabien Mensah, Vigan Rivière, Pascal Pauthenet, Etienne Picard, Baptiste Guinet, Christophe |
author_sort |
Siegelman, Lia |
title |
Correction and Accuracy of High- and Low-Resolution CTD Data from Animal-Borne Instruments |
title_short |
Correction and Accuracy of High- and Low-Resolution CTD Data from Animal-Borne Instruments |
title_full |
Correction and Accuracy of High- and Low-Resolution CTD Data from Animal-Borne Instruments |
title_fullStr |
Correction and Accuracy of High- and Low-Resolution CTD Data from Animal-Borne Instruments |
title_full_unstemmed |
Correction and Accuracy of High- and Low-Resolution CTD Data from Animal-Borne Instruments |
title_sort |
correction and accuracy of high- and low-resolution ctd data from animal-borne instruments |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02192465 https://hal.science/hal-02192465/document https://hal.science/hal-02192465/file/Siegelman_etal_JoAaOT_2019.pdf https://doi.org/10.1175/JTECH-D-18-0170.1 |
genre |
Elephant Seals Southern Ocean |
genre_facet |
Elephant Seals Southern Ocean |
op_source |
ISSN: 0739-0572 EISSN: 1520-0426 Journal of Atmospheric and Oceanic Technology https://hal.science/hal-02192465 Journal of Atmospheric and Oceanic Technology, 2019, 36 (5), pp.745-760. ⟨10.1175/JTECH-D-18-0170.1⟩ |
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op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1175/JTECH-D-18-0170.1 |
container_title |
Journal of Atmospheric and Oceanic Technology |
container_volume |
36 |
container_issue |
5 |
container_start_page |
745 |
op_container_end_page |
760 |
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1799479316689453056 |
spelling |
ftuniversailles:oai:HAL:hal-02192465v1 2024-05-19T07:39:44+00:00 Correction and Accuracy of High- and Low-Resolution CTD Data from Animal-Borne Instruments Siegelman, Lia Roquet, Fabien Mensah, Vigan Rivière, Pascal Pauthenet, Etienne Picard, Baptiste Guinet, Christophe Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Department of Environmental Science and Engineering Pasadena (ESE) California Institute of Technology (CALTECH) Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) Department of Marine Sciences Gothenburg Göteborgs Universitet = University of Gothenburg (GU) Institute of Low Temperature Science Sapporo Hokkaido University Sapporo, Japan Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) CNES-TOSCA IPEV CORIOLIS in situ ocean observation program CNES LabexMer doctoral fellowship ANR-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010) 2019-05 https://hal.science/hal-02192465 https://hal.science/hal-02192465/document https://hal.science/hal-02192465/file/Siegelman_etal_JoAaOT_2019.pdf https://doi.org/10.1175/JTECH-D-18-0170.1 en eng HAL CCSD American Meteorological Society info:eu-repo/semantics/altIdentifier/doi/10.1175/JTECH-D-18-0170.1 hal-02192465 https://hal.science/hal-02192465 https://hal.science/hal-02192465/document https://hal.science/hal-02192465/file/Siegelman_etal_JoAaOT_2019.pdf doi:10.1175/JTECH-D-18-0170.1 WOS: 000465389500001 info:eu-repo/semantics/OpenAccess ISSN: 0739-0572 EISSN: 1520-0426 Journal of Atmospheric and Oceanic Technology https://hal.science/hal-02192465 Journal of Atmospheric and Oceanic Technology, 2019, 36 (5), pp.745-760. ⟨10.1175/JTECH-D-18-0170.1⟩ In situ oceanic observations Data processing Algorithms ACL [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2019 ftuniversailles https://doi.org/10.1175/JTECH-D-18-0170.1 2024-04-25T00:30:10Z International audience Most available CTD Satellite Relay Data Logger (CTD-SRDL) profiles are heavily compressed before satellite transmission. High-resolution profiles recorded at the sampling frequency of 0.5 Hz are, however, available upon physical retrieval of the logger. Between 2014 and 2018, several loggers deployed on elephant seals in the Southern Ocean have been set in continuous recording mode, capturing both the ascent and descent for over 60 profiles per day during several months, opening new horizons for the physical oceanography community. Taking advantage of a new dataset made of seven such loggers, a postprocessing procedure is proposed and validated to improve the quality of all CTD-SRDL data: that is, both high-resolution profiles and compressed low-resolution ones. First, temperature and conductivity are corrected for a thermal mass effect. Then salinity spiking and density inversion are removed by adjusting salinity while leaving temperature unchanged. This method, applied here to more than 50 000 profiles, yields significant and systematic improvements in both temperature and salinity, particularly in regions of rapid temperature variation. The continuous high-resolution dataset is then used to provide updated accuracy estimates of CTD-SRDL data. For high-resolution data, accuracies are estimated to be of +/- 0.02 degrees C for temperature and +/- 0.03 g kg(-1) for salinity. For low-resolution data, transmitted data points have similar accuracies; however, reconstructed temperature profiles have a reduced accuracy associated with the vertical interpolation of +/- 0.04 degrees C and a nearly unchanged salinity accuracy of +/- 0.03 g kg(-1). Article in Journal/Newspaper Elephant Seals Southern Ocean Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Journal of Atmospheric and Oceanic Technology 36 5 745 760 |