Delayed-Mode Calibration of Hydrographic Data Obtained from Animal-Borne Satellite Relay Data Loggers
International audience A delayed-mode calibration procedure is presented to improve the quality of hydrographic data from CTD-Satellite Relay Data Loggers (CTD-SRDL) deployed on elephant seals. This procedure is applied on a dataset obtained with 10 CTD-SRDLs deployed at Kerguelen Islands in 2007. A...
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
2011
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Subjects: | |
Online Access: | https://hal.science/hal-00624609 https://hal.science/hal-00624609/document https://hal.science/hal-00624609/file/%5B15200426%20-%20Journal%20of%20Atmospheric%20and%20Oceanic%20Technology%5D%20Delayed-Mode%20Calibration%20of%20Hydrographic%20Data%20Obtained%20from%20Animal-Borne%20Satellite%20Relay%20Data%20Loggers.pdf https://doi.org/10.1175/2010JTECHO801.1 |
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ftepunivpsaclay:oai:HAL:hal-00624609v1 |
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openpolar |
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Open Polar |
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École Polytechnique, Université Paris-Saclay: HAL |
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ftepunivpsaclay |
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English |
topic |
OCEANOGRAPHIC CONDITIONS SALINITY ELEPHANT SEALS OCEAN [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE]Environmental Sciences |
spellingShingle |
OCEANOGRAPHIC CONDITIONS SALINITY ELEPHANT SEALS OCEAN [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE]Environmental Sciences Roquet, Fabien Charrassin, Jean-Benoit Marchand, Stéphane Boehme, Lars Fedak, Michael A. Reverdin, Gilles Guinet, Christophe Delayed-Mode Calibration of Hydrographic Data Obtained from Animal-Borne Satellite Relay Data Loggers |
topic_facet |
OCEANOGRAPHIC CONDITIONS SALINITY ELEPHANT SEALS OCEAN [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE]Environmental Sciences |
description |
International audience A delayed-mode calibration procedure is presented to improve the quality of hydrographic data from CTD-Satellite Relay Data Loggers (CTD-SRDL) deployed on elephant seals. This procedure is applied on a dataset obtained with 10 CTD-SRDLs deployed at Kerguelen Islands in 2007. A comparison of CTD-SRDLs with a ship-based CTD system is first presented. A pressure-effect correction, linear with pressure, is deduced for both temperature and salinity measurements. An external field effect on the conductivity sensor is also detected, inducing an additional salinity offset. The salinity offset cannot be estimated directly from the ship-based CTD comparisons, because the attachment of the CTD-SRDL on the seal head modifies the magnitude of the external field effect. Two methods are proposed for estimating a posteriori the salinity offset. The first method uses the stable salinity maximum characterizing the Lower Circumpolar Deep Water (LCDW), sampled by seals foraging south of the Southern Antarctic Circumpolar Current Front. Where this approach is not possible, a statistical method of cross-comparison of CTD-SRDLs surface salinity measurements is used over the sluggish Northern Kerguelen Plateau. Accuracies are respectively estimated as +/- 0.02 degrees C for temperature and +/- 0.1 for derived salinity without corrections. The delayed-mode calibration significantly improves the CTD-SRDL data, improving accuracies to +/- 0.01 degrees C and +/- 0.03, respectively. A better salinity accuracy of +/- 0.02 is achieved when the LCDW method can be used. For CTD-SRDLs where ship-based CTD comparisons are not available, the expected accuracy would be +/- 0.02 degrees C for temperature and +/- 0.04 for the derived salinity. |
author2 |
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Sea Mammal Research Unit Natural Environment Research Council (NERC) Centre d'Études Biologiques de Chizé (CEBC) Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Roquet, Fabien Charrassin, Jean-Benoit Marchand, Stéphane Boehme, Lars Fedak, Michael A. Reverdin, Gilles Guinet, Christophe |
author_facet |
Roquet, Fabien Charrassin, Jean-Benoit Marchand, Stéphane Boehme, Lars Fedak, Michael A. Reverdin, Gilles Guinet, Christophe |
author_sort |
Roquet, Fabien |
title |
Delayed-Mode Calibration of Hydrographic Data Obtained from Animal-Borne Satellite Relay Data Loggers |
title_short |
Delayed-Mode Calibration of Hydrographic Data Obtained from Animal-Borne Satellite Relay Data Loggers |
title_full |
Delayed-Mode Calibration of Hydrographic Data Obtained from Animal-Borne Satellite Relay Data Loggers |
title_fullStr |
Delayed-Mode Calibration of Hydrographic Data Obtained from Animal-Borne Satellite Relay Data Loggers |
title_full_unstemmed |
Delayed-Mode Calibration of Hydrographic Data Obtained from Animal-Borne Satellite Relay Data Loggers |
title_sort |
delayed-mode calibration of hydrographic data obtained from animal-borne satellite relay data loggers |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00624609 https://hal.science/hal-00624609/document https://hal.science/hal-00624609/file/%5B15200426%20-%20Journal%20of%20Atmospheric%20and%20Oceanic%20Technology%5D%20Delayed-Mode%20Calibration%20of%20Hydrographic%20Data%20Obtained%20from%20Animal-Borne%20Satellite%20Relay%20Data%20Loggers.pdf https://doi.org/10.1175/2010JTECHO801.1 |
genre |
Antarc* Antarctic Elephant Seals Kerguelen Islands |
genre_facet |
Antarc* Antarctic Elephant Seals Kerguelen Islands |
op_source |
ISSN: 0739-0572 EISSN: 1520-0426 Journal of Atmospheric and Oceanic Technology https://hal.science/hal-00624609 Journal of Atmospheric and Oceanic Technology, 2011, 28 (6), pp.787-801. ⟨10.1175/2010JTECHO801.1⟩ http://journals.ametsoc.org/doi/abs/10.1175/2010JTECHO801.1 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1175/2010JTECHO801.1 hal-00624609 https://hal.science/hal-00624609 https://hal.science/hal-00624609/document https://hal.science/hal-00624609/file/%5B15200426%20-%20Journal%20of%20Atmospheric%20and%20Oceanic%20Technology%5D%20Delayed-Mode%20Calibration%20of%20Hydrographic%20Data%20Obtained%20from%20Animal-Borne%20Satellite%20Relay%20Data%20Loggers.pdf doi:10.1175/2010JTECHO801.1 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1175/2010JTECHO801.1 |
container_title |
Journal of Atmospheric and Oceanic Technology |
container_volume |
28 |
container_issue |
6 |
container_start_page |
787 |
op_container_end_page |
801 |
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1799469203160301568 |
spelling |
ftepunivpsaclay:oai:HAL:hal-00624609v1 2024-05-19T07:31:21+00:00 Delayed-Mode Calibration of Hydrographic Data Obtained from Animal-Borne Satellite Relay Data Loggers Roquet, Fabien Charrassin, Jean-Benoit Marchand, Stéphane Boehme, Lars Fedak, Michael A. Reverdin, Gilles Guinet, Christophe Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Sea Mammal Research Unit Natural Environment Research Council (NERC) Centre d'Études Biologiques de Chizé (CEBC) Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) 2011 https://hal.science/hal-00624609 https://hal.science/hal-00624609/document https://hal.science/hal-00624609/file/%5B15200426%20-%20Journal%20of%20Atmospheric%20and%20Oceanic%20Technology%5D%20Delayed-Mode%20Calibration%20of%20Hydrographic%20Data%20Obtained%20from%20Animal-Borne%20Satellite%20Relay%20Data%20Loggers.pdf https://doi.org/10.1175/2010JTECHO801.1 en eng HAL CCSD American Meteorological Society info:eu-repo/semantics/altIdentifier/doi/10.1175/2010JTECHO801.1 hal-00624609 https://hal.science/hal-00624609 https://hal.science/hal-00624609/document https://hal.science/hal-00624609/file/%5B15200426%20-%20Journal%20of%20Atmospheric%20and%20Oceanic%20Technology%5D%20Delayed-Mode%20Calibration%20of%20Hydrographic%20Data%20Obtained%20from%20Animal-Borne%20Satellite%20Relay%20Data%20Loggers.pdf doi:10.1175/2010JTECHO801.1 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0739-0572 EISSN: 1520-0426 Journal of Atmospheric and Oceanic Technology https://hal.science/hal-00624609 Journal of Atmospheric and Oceanic Technology, 2011, 28 (6), pp.787-801. ⟨10.1175/2010JTECHO801.1⟩ http://journals.ametsoc.org/doi/abs/10.1175/2010JTECHO801.1 OCEANOGRAPHIC CONDITIONS SALINITY ELEPHANT SEALS OCEAN [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2011 ftepunivpsaclay https://doi.org/10.1175/2010JTECHO801.1 2024-04-25T00:40:38Z International audience A delayed-mode calibration procedure is presented to improve the quality of hydrographic data from CTD-Satellite Relay Data Loggers (CTD-SRDL) deployed on elephant seals. This procedure is applied on a dataset obtained with 10 CTD-SRDLs deployed at Kerguelen Islands in 2007. A comparison of CTD-SRDLs with a ship-based CTD system is first presented. A pressure-effect correction, linear with pressure, is deduced for both temperature and salinity measurements. An external field effect on the conductivity sensor is also detected, inducing an additional salinity offset. The salinity offset cannot be estimated directly from the ship-based CTD comparisons, because the attachment of the CTD-SRDL on the seal head modifies the magnitude of the external field effect. Two methods are proposed for estimating a posteriori the salinity offset. The first method uses the stable salinity maximum characterizing the Lower Circumpolar Deep Water (LCDW), sampled by seals foraging south of the Southern Antarctic Circumpolar Current Front. Where this approach is not possible, a statistical method of cross-comparison of CTD-SRDLs surface salinity measurements is used over the sluggish Northern Kerguelen Plateau. Accuracies are respectively estimated as +/- 0.02 degrees C for temperature and +/- 0.1 for derived salinity without corrections. The delayed-mode calibration significantly improves the CTD-SRDL data, improving accuracies to +/- 0.01 degrees C and +/- 0.03, respectively. A better salinity accuracy of +/- 0.02 is achieved when the LCDW method can be used. For CTD-SRDLs where ship-based CTD comparisons are not available, the expected accuracy would be +/- 0.02 degrees C for temperature and +/- 0.04 for the derived salinity. Article in Journal/Newspaper Antarc* Antarctic Elephant Seals Kerguelen Islands École Polytechnique, Université Paris-Saclay: HAL Journal of Atmospheric and Oceanic Technology 28 6 787 801 |