Southern Ocean carbon export efficiency in relation to temperature and primary productivity
Satellite remote sensing and numerical models are widely used to estimate large-scale variations in ocean carbon export, but the relationship between export efficiency (e-ratio) of sinking organic carbon out of the surface ocean and its drivers remains poorly understood, especially in the Southern O...
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ftpubmed:oai:pubmedcentral.nih.gov:7417578 2023-05-15T14:04:13+02:00 Southern Ocean carbon export efficiency in relation to temperature and primary productivity Fan, Gaojing Han, Zhengbing Ma, Wentao Chen, Shuangling Chai, Fei Mazloff, Matthew R. Pan, Jianming Zhang, Haisheng 2020-08-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7417578/ http://www.ncbi.nlm.nih.gov/pubmed/32778681 https://doi.org/10.1038/s41598-020-70417-z en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7417578/ http://www.ncbi.nlm.nih.gov/pubmed/32778681 http://dx.doi.org/10.1038/s41598-020-70417-z © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Sci Rep Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-70417-z 2020-08-16T00:41:30Z Satellite remote sensing and numerical models are widely used to estimate large-scale variations in ocean carbon export, but the relationship between export efficiency (e-ratio) of sinking organic carbon out of the surface ocean and its drivers remains poorly understood, especially in the Southern Ocean. Here, we assess the effects of temperature and primary productivity on e-ratio by combining particulate organic carbon export flux from in situ measurements during 1997–2013, environmental parameters from satellite products, and outputs from ocean biogeochemical models in the Southern Ocean. Results show that “High Productivity Low E-ratio” (HPLE) is a common phenomenon in the Subantarctic Zone and the Polar Frontal Zone, but not the Antarctic Zone. The e-ratio shows little dependence on temperature below 6 °C. Our results support the hypothesis that the HPLE phenomenon is due to the large contribution of non-sinking organic carbon. Both temperature and ballast minerals play less important roles in controlling e-ratio than ecosystem structure at low temperatures. These findings suggest that non-sinking organic carbon, ecosystem structure, and region-specific parameterizations of e-ratio are key factors to quantify the carbon export in the Southern Ocean. Text Antarc* Antarctic Southern Ocean PubMed Central (PMC) Antarctic Southern Ocean The Antarctic Scientific Reports 10 1 |
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Article Fan, Gaojing Han, Zhengbing Ma, Wentao Chen, Shuangling Chai, Fei Mazloff, Matthew R. Pan, Jianming Zhang, Haisheng Southern Ocean carbon export efficiency in relation to temperature and primary productivity |
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Satellite remote sensing and numerical models are widely used to estimate large-scale variations in ocean carbon export, but the relationship between export efficiency (e-ratio) of sinking organic carbon out of the surface ocean and its drivers remains poorly understood, especially in the Southern Ocean. Here, we assess the effects of temperature and primary productivity on e-ratio by combining particulate organic carbon export flux from in situ measurements during 1997–2013, environmental parameters from satellite products, and outputs from ocean biogeochemical models in the Southern Ocean. Results show that “High Productivity Low E-ratio” (HPLE) is a common phenomenon in the Subantarctic Zone and the Polar Frontal Zone, but not the Antarctic Zone. The e-ratio shows little dependence on temperature below 6 °C. Our results support the hypothesis that the HPLE phenomenon is due to the large contribution of non-sinking organic carbon. Both temperature and ballast minerals play less important roles in controlling e-ratio than ecosystem structure at low temperatures. These findings suggest that non-sinking organic carbon, ecosystem structure, and region-specific parameterizations of e-ratio are key factors to quantify the carbon export in the Southern Ocean. |
format |
Text |
author |
Fan, Gaojing Han, Zhengbing Ma, Wentao Chen, Shuangling Chai, Fei Mazloff, Matthew R. Pan, Jianming Zhang, Haisheng |
author_facet |
Fan, Gaojing Han, Zhengbing Ma, Wentao Chen, Shuangling Chai, Fei Mazloff, Matthew R. Pan, Jianming Zhang, Haisheng |
author_sort |
Fan, Gaojing |
title |
Southern Ocean carbon export efficiency in relation to temperature and primary productivity |
title_short |
Southern Ocean carbon export efficiency in relation to temperature and primary productivity |
title_full |
Southern Ocean carbon export efficiency in relation to temperature and primary productivity |
title_fullStr |
Southern Ocean carbon export efficiency in relation to temperature and primary productivity |
title_full_unstemmed |
Southern Ocean carbon export efficiency in relation to temperature and primary productivity |
title_sort |
southern ocean carbon export efficiency in relation to temperature and primary productivity |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7417578/ http://www.ncbi.nlm.nih.gov/pubmed/32778681 https://doi.org/10.1038/s41598-020-70417-z |
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Antarctic Southern Ocean The Antarctic |
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Antarctic Southern Ocean The Antarctic |
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Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7417578/ http://www.ncbi.nlm.nih.gov/pubmed/32778681 http://dx.doi.org/10.1038/s41598-020-70417-z |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41598-020-70417-z |
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Scientific Reports |
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