Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory
Coccolithophores are a biogeochemically important calcifying group of phytoplankton that exert significant influence on the global carbon cycle. They can modulate the air‐sea flux of CO2 through the processes of photosynthesis and calcification and, as one of the primary contributors to the oceanic...
Published in: | Global Biogeochemical Cycles |
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ftsouthampton:oai:eprints.soton.ac.uk:436335 2023-07-30T04:07:02+02:00 Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory Hopkins, Jason Henson, Stephanie A. Poulton, Alex J. Balch, William M. 2019-10-22 text https://eprints.soton.ac.uk/436335/ https://eprints.soton.ac.uk/436335/1/Hopkins_et_al_2019_Global_Biogeochemical_Cycles.pdf en English eng https://eprints.soton.ac.uk/436335/1/Hopkins_et_al_2019_Global_Biogeochemical_Cycles.pdf Hopkins, Jason, Henson, Stephanie A., Poulton, Alex J. and Balch, William M. (2019) Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory. Global Biogeochemical Cycles. (doi:10.1029/2019GB006300 <http://dx.doi.org/10.1029/2019GB006300>). Article PeerReviewed 2019 ftsouthampton https://doi.org/10.1029/2019GB006300 2023-07-09T22:33:25Z Coccolithophores are a biogeochemically important calcifying group of phytoplankton that exert significant influence on the global carbon cycle. They can modulate the air‐sea flux of CO2 through the processes of photosynthesis and calcification and, as one of the primary contributors to the oceanic particulate inorganic carbon (PIC) pool, promote the export of organic carbon to depth. Here we present the first interannually resolved, global analysis of PIC standing stock. Average, global PIC standing stock in the top 100 m is estimated to be 27.04 ± 4.33 Tg PIC, with turnover times of ~7 days, which suggests PIC is likely removed by active processes such as grazing or rapid sinking, mediated through biogenic packaging (i.e., fecal pellets). We find that the Southern Hemisphere plays a significant role in the variability in PIC inventories and that interannual variability in PIC standing stock is driven primarily by variability in the midlatitude oceanic gyres and regions within the Great Calcite Belt of the Southern Ocean. Our results provide a framework against which future changes in global PIC standing stocks may be assessed. Article in Journal/Newspaper Southern Ocean University of Southampton: e-Prints Soton Southern Ocean Global Biogeochemical Cycles 33 11 1328 1338 |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
English |
description |
Coccolithophores are a biogeochemically important calcifying group of phytoplankton that exert significant influence on the global carbon cycle. They can modulate the air‐sea flux of CO2 through the processes of photosynthesis and calcification and, as one of the primary contributors to the oceanic particulate inorganic carbon (PIC) pool, promote the export of organic carbon to depth. Here we present the first interannually resolved, global analysis of PIC standing stock. Average, global PIC standing stock in the top 100 m is estimated to be 27.04 ± 4.33 Tg PIC, with turnover times of ~7 days, which suggests PIC is likely removed by active processes such as grazing or rapid sinking, mediated through biogenic packaging (i.e., fecal pellets). We find that the Southern Hemisphere plays a significant role in the variability in PIC inventories and that interannual variability in PIC standing stock is driven primarily by variability in the midlatitude oceanic gyres and regions within the Great Calcite Belt of the Southern Ocean. Our results provide a framework against which future changes in global PIC standing stocks may be assessed. |
format |
Article in Journal/Newspaper |
author |
Hopkins, Jason Henson, Stephanie A. Poulton, Alex J. Balch, William M. |
spellingShingle |
Hopkins, Jason Henson, Stephanie A. Poulton, Alex J. Balch, William M. Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory |
author_facet |
Hopkins, Jason Henson, Stephanie A. Poulton, Alex J. Balch, William M. |
author_sort |
Hopkins, Jason |
title |
Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory |
title_short |
Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory |
title_full |
Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory |
title_fullStr |
Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory |
title_full_unstemmed |
Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory |
title_sort |
regional characteristics of the temporal variability in the global particulate inorganic carbon inventory |
publishDate |
2019 |
url |
https://eprints.soton.ac.uk/436335/ https://eprints.soton.ac.uk/436335/1/Hopkins_et_al_2019_Global_Biogeochemical_Cycles.pdf |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://eprints.soton.ac.uk/436335/1/Hopkins_et_al_2019_Global_Biogeochemical_Cycles.pdf Hopkins, Jason, Henson, Stephanie A., Poulton, Alex J. and Balch, William M. (2019) Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory. Global Biogeochemical Cycles. (doi:10.1029/2019GB006300 <http://dx.doi.org/10.1029/2019GB006300>). |
op_doi |
https://doi.org/10.1029/2019GB006300 |
container_title |
Global Biogeochemical Cycles |
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33 |
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11 |
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1328 |
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1338 |
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1772820120306974720 |