Pacific Southern Ocean coccolithophore-derived particulate inorganic carbon (PIC): A novel comparative analysis of in-situ and satellite-derived measurements
Polar plankton communities are already experiencing the impact of ocean acidification and global warming. Coccolithophores are the main type of calcifying phytoplankton in the Southern Ocean (SO) and they play a key role in the carbon cycle through the production of particulate organic, and inorgani...
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Copernicus Publications
2023
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00070686 2024-01-21T10:01:28+01:00 Pacific Southern Ocean coccolithophore-derived particulate inorganic carbon (PIC): A novel comparative analysis of in-situ and satellite-derived measurements Saavedra-Pellitero, Mariem Baumann, Karl-Heinz Bachiller-Jareno, Nuria Lovell, Harold Vollmar, Nele Manon Malinverno, Elisa 2023-12 electronic https://doi.org/10.5194/egusphere-2023-2801 https://noa.gwlb.de/receive/cop_mods_00070686 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069028/egusphere-2023-2801.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2801/egusphere-2023-2801.pdf eng eng Copernicus Publications https://doi.org/10.5194/egusphere-2023-2801 https://noa.gwlb.de/receive/cop_mods_00070686 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069028/egusphere-2023-2801.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2801/egusphere-2023-2801.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/egusphere-2023-2801 2023-12-25T00:22:42Z Polar plankton communities are already experiencing the impact of ocean acidification and global warming. Coccolithophores are the main type of calcifying phytoplankton in the Southern Ocean (SO) and they play a key role in the carbon cycle through the production of particulate organic, and inorganic carbon (PIC). Coccolithophores account for most of the optical PIC backscattering in the sea, so remote sensing is potentially an excellent monitoring tool. However, in situ measurements in the SO are sparse in space and time due to the harsh weather conditions. Here, we combine micropalaeontology and remote-sensing to evaluate critical discrepancies between coccolithophore and satellite-derived PIC in the Pacific SO in non-bloom conditions. Plankton samples were collected from two latitudinal transects: from New Zealand to Antarctica (December 2004–January 2005) and across the Drake Passage (February–March 2016). Coccolithophore species specific PIC estimates were compared, based on 1) Scanning Electron Microscope cocolith morphometric analyses and 2) remote sensing PIC values acquired from NASA’s Ocean Color Web service. Considering that the SO is the cloudiest region on Earth (which limits the amount of satellite data available), in-situ and satellite-derived PIC datasets show very good agreement in both transects, particularly in the Subantarctic and Polar Front zones. Emiliania huxleyi morphogroup B substantially contributes to the sea-surface PIC content south of the Subantarctic Front in both transects, whereas E. huxleyi types A, A overcalcified, and other taxa (e.g. Calcidiscus leptoporus), only contribute to coccolithophore PIC in the northernmost stations. Of particular interest are strong peaks in satellite-derived PIC south of the Polar Front, which do not show up in the coccolithophore data. We suggest that the high reflectance signal from this southernmost region (which could have been initially attributed to coccolithophores) may be due to the prevalence of small opal particles or unknown highly ... Article in Journal/Newspaper Antarc* Antarctica Drake Passage Ocean acidification Southern Ocean Niedersächsisches Online-Archiv NOA Southern Ocean Drake Passage Pacific New Zealand |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Saavedra-Pellitero, Mariem Baumann, Karl-Heinz Bachiller-Jareno, Nuria Lovell, Harold Vollmar, Nele Manon Malinverno, Elisa Pacific Southern Ocean coccolithophore-derived particulate inorganic carbon (PIC): A novel comparative analysis of in-situ and satellite-derived measurements |
topic_facet |
article Verlagsveröffentlichung |
description |
Polar plankton communities are already experiencing the impact of ocean acidification and global warming. Coccolithophores are the main type of calcifying phytoplankton in the Southern Ocean (SO) and they play a key role in the carbon cycle through the production of particulate organic, and inorganic carbon (PIC). Coccolithophores account for most of the optical PIC backscattering in the sea, so remote sensing is potentially an excellent monitoring tool. However, in situ measurements in the SO are sparse in space and time due to the harsh weather conditions. Here, we combine micropalaeontology and remote-sensing to evaluate critical discrepancies between coccolithophore and satellite-derived PIC in the Pacific SO in non-bloom conditions. Plankton samples were collected from two latitudinal transects: from New Zealand to Antarctica (December 2004–January 2005) and across the Drake Passage (February–March 2016). Coccolithophore species specific PIC estimates were compared, based on 1) Scanning Electron Microscope cocolith morphometric analyses and 2) remote sensing PIC values acquired from NASA’s Ocean Color Web service. Considering that the SO is the cloudiest region on Earth (which limits the amount of satellite data available), in-situ and satellite-derived PIC datasets show very good agreement in both transects, particularly in the Subantarctic and Polar Front zones. Emiliania huxleyi morphogroup B substantially contributes to the sea-surface PIC content south of the Subantarctic Front in both transects, whereas E. huxleyi types A, A overcalcified, and other taxa (e.g. Calcidiscus leptoporus), only contribute to coccolithophore PIC in the northernmost stations. Of particular interest are strong peaks in satellite-derived PIC south of the Polar Front, which do not show up in the coccolithophore data. We suggest that the high reflectance signal from this southernmost region (which could have been initially attributed to coccolithophores) may be due to the prevalence of small opal particles or unknown highly ... |
format |
Article in Journal/Newspaper |
author |
Saavedra-Pellitero, Mariem Baumann, Karl-Heinz Bachiller-Jareno, Nuria Lovell, Harold Vollmar, Nele Manon Malinverno, Elisa |
author_facet |
Saavedra-Pellitero, Mariem Baumann, Karl-Heinz Bachiller-Jareno, Nuria Lovell, Harold Vollmar, Nele Manon Malinverno, Elisa |
author_sort |
Saavedra-Pellitero, Mariem |
title |
Pacific Southern Ocean coccolithophore-derived particulate inorganic carbon (PIC): A novel comparative analysis of in-situ and satellite-derived measurements |
title_short |
Pacific Southern Ocean coccolithophore-derived particulate inorganic carbon (PIC): A novel comparative analysis of in-situ and satellite-derived measurements |
title_full |
Pacific Southern Ocean coccolithophore-derived particulate inorganic carbon (PIC): A novel comparative analysis of in-situ and satellite-derived measurements |
title_fullStr |
Pacific Southern Ocean coccolithophore-derived particulate inorganic carbon (PIC): A novel comparative analysis of in-situ and satellite-derived measurements |
title_full_unstemmed |
Pacific Southern Ocean coccolithophore-derived particulate inorganic carbon (PIC): A novel comparative analysis of in-situ and satellite-derived measurements |
title_sort |
pacific southern ocean coccolithophore-derived particulate inorganic carbon (pic): a novel comparative analysis of in-situ and satellite-derived measurements |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/egusphere-2023-2801 https://noa.gwlb.de/receive/cop_mods_00070686 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069028/egusphere-2023-2801.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2801/egusphere-2023-2801.pdf |
geographic |
Southern Ocean Drake Passage Pacific New Zealand |
geographic_facet |
Southern Ocean Drake Passage Pacific New Zealand |
genre |
Antarc* Antarctica Drake Passage Ocean acidification Southern Ocean |
genre_facet |
Antarc* Antarctica Drake Passage Ocean acidification Southern Ocean |
op_relation |
https://doi.org/10.5194/egusphere-2023-2801 https://noa.gwlb.de/receive/cop_mods_00070686 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069028/egusphere-2023-2801.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2801/egusphere-2023-2801.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/egusphere-2023-2801 |
_version_ |
1788691394543484928 |