Detection of coccolithophore blooms with biogeochemical‐argo floats
Coccolithophores (calcifying phytoplankton) form extensive blooms in temperate and subpolar oceans as evidenced from ocean-color satellites. This study examines the potential to detect coccolithophore blooms with BioGeoChemical-Argo (BGC-Argo) floats, autonomous ocean profilers equipped with bio-opt...
Published in: | Geophysical Research Letters |
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2020
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Online Access: | https://biblio.ugent.be/publication/8689189 http://hdl.handle.net/1854/LU-8689189 https://doi.org/10.1029/2020gl090559 https://biblio.ugent.be/publication/8689189/file/8689193 |
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ftunivgent:oai:archive.ugent.be:8689189 2023-06-11T04:15:02+02:00 Detection of coccolithophore blooms with biogeochemical‐argo floats Terrats, L. Claustre, H. Cornec, M. Mangin, A Neukermans, Griet 2020 application/pdf https://biblio.ugent.be/publication/8689189 http://hdl.handle.net/1854/LU-8689189 https://doi.org/10.1029/2020gl090559 https://biblio.ugent.be/publication/8689189/file/8689193 eng eng https://biblio.ugent.be/publication/8689189 http://hdl.handle.net/1854/LU-8689189 http://dx.doi.org/10.1029/2020gl090559 https://biblio.ugent.be/publication/8689189/file/8689193 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess GEOPHYSICAL RESEARCH LETTERS ISSN: 0094-8276 ISSN: 1944-8007 Biology and Life Sciences Earth and Environmental Sciences General Earth and Planetary Sciences Geophysics coccolithophores Emiliania huxleyi bloom detection BGC-Argo floats bio-optics global ocean OPTICAL-PROPERTIES NORTH-ATLANTIC CHLOROPHYLL CONCENTRATION LIGHT-SCATTERING ORGANIC-CARBON INDIAN SECTOR BACKSCATTERING SATELLITE OCEAN VARIABILITY journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2020 ftunivgent https://doi.org/10.1029/2020gl090559 2023-05-10T22:47:27Z Coccolithophores (calcifying phytoplankton) form extensive blooms in temperate and subpolar oceans as evidenced from ocean-color satellites. This study examines the potential to detect coccolithophore blooms with BioGeoChemical-Argo (BGC-Argo) floats, autonomous ocean profilers equipped with bio-optical and physicochemical sensors. We first matched float data to ocean-color satellite data of calcite concentration to select floats that sampled coccolithophore blooms. We identified two floats in the Southern Ocean, which measured the particulate beam attenuation coefficient (c(p)) in addition to two core BGC-Argo variables, Chlorophyll-a concentration ([Chl-a]) and the particle backscattering coefficient (b(bp)). We show that coccolithophore blooms can be identified from floats by distinctively high values of (1) the b(bp)/c(p) ratio, a proxy for the refractive index of suspended particles, and (2) the b(bp)/[Chl-a] ratio, measurable by any BGC-Argo float. The latter thus paves the way to global investigations of environmental control of coccolithophore blooms and their role in carbon export. Plain Language Summary Coccolithophores are a group of phytoplankton that form an armor of calcite plates. Coccolithophores may form intense blooms which can be identified from space by so-called ocean-color satellites, providing global images of the color of the surface ocean. BioGeoChemical-Argo (BGC-Argo) floats, robots profiling down to 2,000 m with a variety of physicochemical and bio-optical sensors, present an increasingly attractive and cost-effective platform to study phytoplankton blooms and their impact on oceanic biogeochemical cycles. We show that coccolithophore blooms can be detected by BGC-Argo floats with high confidence, hence providing a new way to study them at the global scale as well as their role in sinking carbon. Key Points We matched profiling float trajectories with ocean-color satellite observations of coccolithophore blooms Two simple bio-optical indices permitted successful identification of ... Article in Journal/Newspaper North Atlantic Southern Ocean Ghent University Academic Bibliography Southern Ocean Indian Geophysical Research Letters 47 23 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Biology and Life Sciences Earth and Environmental Sciences General Earth and Planetary Sciences Geophysics coccolithophores Emiliania huxleyi bloom detection BGC-Argo floats bio-optics global ocean OPTICAL-PROPERTIES NORTH-ATLANTIC CHLOROPHYLL CONCENTRATION LIGHT-SCATTERING ORGANIC-CARBON INDIAN SECTOR BACKSCATTERING SATELLITE OCEAN VARIABILITY |
spellingShingle |
Biology and Life Sciences Earth and Environmental Sciences General Earth and Planetary Sciences Geophysics coccolithophores Emiliania huxleyi bloom detection BGC-Argo floats bio-optics global ocean OPTICAL-PROPERTIES NORTH-ATLANTIC CHLOROPHYLL CONCENTRATION LIGHT-SCATTERING ORGANIC-CARBON INDIAN SECTOR BACKSCATTERING SATELLITE OCEAN VARIABILITY Terrats, L. Claustre, H. Cornec, M. Mangin, A Neukermans, Griet Detection of coccolithophore blooms with biogeochemical‐argo floats |
topic_facet |
Biology and Life Sciences Earth and Environmental Sciences General Earth and Planetary Sciences Geophysics coccolithophores Emiliania huxleyi bloom detection BGC-Argo floats bio-optics global ocean OPTICAL-PROPERTIES NORTH-ATLANTIC CHLOROPHYLL CONCENTRATION LIGHT-SCATTERING ORGANIC-CARBON INDIAN SECTOR BACKSCATTERING SATELLITE OCEAN VARIABILITY |
description |
Coccolithophores (calcifying phytoplankton) form extensive blooms in temperate and subpolar oceans as evidenced from ocean-color satellites. This study examines the potential to detect coccolithophore blooms with BioGeoChemical-Argo (BGC-Argo) floats, autonomous ocean profilers equipped with bio-optical and physicochemical sensors. We first matched float data to ocean-color satellite data of calcite concentration to select floats that sampled coccolithophore blooms. We identified two floats in the Southern Ocean, which measured the particulate beam attenuation coefficient (c(p)) in addition to two core BGC-Argo variables, Chlorophyll-a concentration ([Chl-a]) and the particle backscattering coefficient (b(bp)). We show that coccolithophore blooms can be identified from floats by distinctively high values of (1) the b(bp)/c(p) ratio, a proxy for the refractive index of suspended particles, and (2) the b(bp)/[Chl-a] ratio, measurable by any BGC-Argo float. The latter thus paves the way to global investigations of environmental control of coccolithophore blooms and their role in carbon export. Plain Language Summary Coccolithophores are a group of phytoplankton that form an armor of calcite plates. Coccolithophores may form intense blooms which can be identified from space by so-called ocean-color satellites, providing global images of the color of the surface ocean. BioGeoChemical-Argo (BGC-Argo) floats, robots profiling down to 2,000 m with a variety of physicochemical and bio-optical sensors, present an increasingly attractive and cost-effective platform to study phytoplankton blooms and their impact on oceanic biogeochemical cycles. We show that coccolithophore blooms can be detected by BGC-Argo floats with high confidence, hence providing a new way to study them at the global scale as well as their role in sinking carbon. Key Points We matched profiling float trajectories with ocean-color satellite observations of coccolithophore blooms Two simple bio-optical indices permitted successful identification of ... |
format |
Article in Journal/Newspaper |
author |
Terrats, L. Claustre, H. Cornec, M. Mangin, A Neukermans, Griet |
author_facet |
Terrats, L. Claustre, H. Cornec, M. Mangin, A Neukermans, Griet |
author_sort |
Terrats, L. |
title |
Detection of coccolithophore blooms with biogeochemical‐argo floats |
title_short |
Detection of coccolithophore blooms with biogeochemical‐argo floats |
title_full |
Detection of coccolithophore blooms with biogeochemical‐argo floats |
title_fullStr |
Detection of coccolithophore blooms with biogeochemical‐argo floats |
title_full_unstemmed |
Detection of coccolithophore blooms with biogeochemical‐argo floats |
title_sort |
detection of coccolithophore blooms with biogeochemical‐argo floats |
publishDate |
2020 |
url |
https://biblio.ugent.be/publication/8689189 http://hdl.handle.net/1854/LU-8689189 https://doi.org/10.1029/2020gl090559 https://biblio.ugent.be/publication/8689189/file/8689193 |
geographic |
Southern Ocean Indian |
geographic_facet |
Southern Ocean Indian |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_source |
GEOPHYSICAL RESEARCH LETTERS ISSN: 0094-8276 ISSN: 1944-8007 |
op_relation |
https://biblio.ugent.be/publication/8689189 http://hdl.handle.net/1854/LU-8689189 http://dx.doi.org/10.1029/2020gl090559 https://biblio.ugent.be/publication/8689189/file/8689193 |
op_rights |
Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2020gl090559 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
23 |
_version_ |
1768371532538576896 |