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Correction of Biogeochemical-Argo Radiometry for Sensor Temperature-Dependence and Drift: Protocols for a Delayed-Mode Quality Control

Measuring the underwater light field is a key mission of the international Biogeochemical-Argo program. Since 2012, 0–250 dbar profiles of downwelling irradiance at 380, 412 and 490 nm besides photosynthetically available radiation (PAR) have been acquired across the globe every 1 to 10 days. The re...

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Autores principales: Jutard, Quentin, Organelli, Emanuele, Briggs, Nathan, Xing, Xiaogang, Schmechtig, Catherine, Boss, Emmanuel, Poteau, Antoine, Leymarie, Edouard, Cornec, Marin, D’Ortenzio, Fabrizio, Claustre, Hervé
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8473398/
https://www.ncbi.nlm.nih.gov/pubmed/34577421
http://dx.doi.org/10.3390/s21186217
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author Jutard, Quentin
Organelli, Emanuele
Briggs, Nathan
Xing, Xiaogang
Schmechtig, Catherine
Boss, Emmanuel
Poteau, Antoine
Leymarie, Edouard
Cornec, Marin
D’Ortenzio, Fabrizio
Claustre, Hervé
author_facet Jutard, Quentin
Organelli, Emanuele
Briggs, Nathan
Xing, Xiaogang
Schmechtig, Catherine
Boss, Emmanuel
Poteau, Antoine
Leymarie, Edouard
Cornec, Marin
D’Ortenzio, Fabrizio
Claustre, Hervé
author_sort Jutard, Quentin
collection PubMed
description Measuring the underwater light field is a key mission of the international Biogeochemical-Argo program. Since 2012, 0–250 dbar profiles of downwelling irradiance at 380, 412 and 490 nm besides photosynthetically available radiation (PAR) have been acquired across the globe every 1 to 10 days. The resulting unprecedented amount of radiometric data has been previously quality-controlled for real-time distribution and ocean optics applications, yet some issues affecting the accuracy of measurements at depth have been identified such as changes in sensor dark responsiveness to ambient temperature, with time and according to the material used to build the instrument components. Here, we propose a quality-control procedure to solve these sensor issues to make Argo radiometry data available for delayed-mode distribution, with associated error estimation. The presented protocol requires the acquisition of ancillary radiometric measurements at the 1000 dbar parking depth and night-time profiles. A test on >10,000 profiles from across the world revealed a quality-control success rate >90% for each band. The procedure shows similar performance in re-qualifying low radiometry values across diverse oceanic regions. We finally recommend, for future deployments, acquiring daily 1000 dbar measurements and one night profile per year, preferably during moonless nights and when the temperature range between the surface and 1000 dbar is the largest.
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spelling pubmed-84733982021-09-28 Correction of Biogeochemical-Argo Radiometry for Sensor Temperature-Dependence and Drift: Protocols for a Delayed-Mode Quality Control Jutard, Quentin Organelli, Emanuele Briggs, Nathan Xing, Xiaogang Schmechtig, Catherine Boss, Emmanuel Poteau, Antoine Leymarie, Edouard Cornec, Marin D’Ortenzio, Fabrizio Claustre, Hervé Sensors (Basel) Article Measuring the underwater light field is a key mission of the international Biogeochemical-Argo program. Since 2012, 0–250 dbar profiles of downwelling irradiance at 380, 412 and 490 nm besides photosynthetically available radiation (PAR) have been acquired across the globe every 1 to 10 days. The resulting unprecedented amount of radiometric data has been previously quality-controlled for real-time distribution and ocean optics applications, yet some issues affecting the accuracy of measurements at depth have been identified such as changes in sensor dark responsiveness to ambient temperature, with time and according to the material used to build the instrument components. Here, we propose a quality-control procedure to solve these sensor issues to make Argo radiometry data available for delayed-mode distribution, with associated error estimation. The presented protocol requires the acquisition of ancillary radiometric measurements at the 1000 dbar parking depth and night-time profiles. A test on >10,000 profiles from across the world revealed a quality-control success rate >90% for each band. The procedure shows similar performance in re-qualifying low radiometry values across diverse oceanic regions. We finally recommend, for future deployments, acquiring daily 1000 dbar measurements and one night profile per year, preferably during moonless nights and when the temperature range between the surface and 1000 dbar is the largest. MDPI 2021-09-16 /pmc/articles/PMC8473398/ /pubmed/34577421 http://dx.doi.org/10.3390/s21186217 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jutard, Quentin
Organelli, Emanuele
Briggs, Nathan
Xing, Xiaogang
Schmechtig, Catherine
Boss, Emmanuel
Poteau, Antoine
Leymarie, Edouard
Cornec, Marin
D’Ortenzio, Fabrizio
Claustre, Hervé
Correction of Biogeochemical-Argo Radiometry for Sensor Temperature-Dependence and Drift: Protocols for a Delayed-Mode Quality Control
title Correction of Biogeochemical-Argo Radiometry for Sensor Temperature-Dependence and Drift: Protocols for a Delayed-Mode Quality Control
title_full Correction of Biogeochemical-Argo Radiometry for Sensor Temperature-Dependence and Drift: Protocols for a Delayed-Mode Quality Control
title_fullStr Correction of Biogeochemical-Argo Radiometry for Sensor Temperature-Dependence and Drift: Protocols for a Delayed-Mode Quality Control
title_full_unstemmed Correction of Biogeochemical-Argo Radiometry for Sensor Temperature-Dependence and Drift: Protocols for a Delayed-Mode Quality Control
title_short Correction of Biogeochemical-Argo Radiometry for Sensor Temperature-Dependence and Drift: Protocols for a Delayed-Mode Quality Control
title_sort correction of biogeochemical-argo radiometry for sensor temperature-dependence and drift: protocols for a delayed-mode quality control
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8473398/
https://www.ncbi.nlm.nih.gov/pubmed/34577421
http://dx.doi.org/10.3390/s21186217
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