Where is mineral ballast important for surface export of particulate organic carbon in the ocean?
International audience Correlations between particulate organic carbon (POC) and mineral fluxes in the deep ocean have inspired the inclusion of "ballast effect" parameterizations in carbon cycle models. A recent study demonstrated regional variability in the effect of ballast minerals on...
Published in: | Geophysical Research Letters |
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Online Access: | https://hal.science/hal-02960919 https://hal.science/hal-02960919/document https://hal.science/hal-02960919/file/2014GL061678.pdf https://doi.org/10.1002/2014GL061678 |
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ftinsu:oai:HAL:hal-02960919v1 2023-06-18T03:39:29+02:00 Where is mineral ballast important for surface export of particulate organic carbon in the ocean? Le Moigne, Frédéric A.C. Pabortsava, Katsiaryna Marcinko, Charlotte Martin, Patrick Sanders, Richard Ocean Biogeochemistry & Ecosystems Research Group National Oceanography Centre (NOC) University of Southampton National Oceanography Centre Southampton (NOC) 2015-01-22 https://hal.science/hal-02960919 https://hal.science/hal-02960919/document https://hal.science/hal-02960919/file/2014GL061678.pdf https://doi.org/10.1002/2014GL061678 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/2014GL061678 hal-02960919 https://hal.science/hal-02960919 https://hal.science/hal-02960919/document https://hal.science/hal-02960919/file/2014GL061678.pdf doi:10.1002/2014GL061678 http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-02960919 Geophysical Research Letters, 2015, 41 (23), pp.8460-8468. ⟨10.1002/2014GL061678⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2015 ftinsu https://doi.org/10.1002/2014GL061678 2023-06-05T22:39:54Z International audience Correlations between particulate organic carbon (POC) and mineral fluxes in the deep ocean have inspired the inclusion of "ballast effect" parameterizations in carbon cycle models. A recent study demonstrated regional variability in the effect of ballast minerals on the flux of POC in the deep ocean. We have undertaken a similar analysis of shallow export data from the Arctic, Atlantic, and Southern Oceans. Mineral ballasting is of greatest importance in the high-latitude North Atlantic, where 60% of the POC flux is associated with ballast minerals. This fraction drops to around 40% in the Southern Ocean. The remainder of the export flux is not associated with minerals, and this unballasted fraction thus often dominates the export flux. The proportion of mineral-associated POC flux often scales with regional variation in export efficiency (the proportion of primary production that is exported). However, local discrepancies suggest that regional differences in ecology also impact the magnitude of surface export. We propose that POC export will not respond equally across all high-latitude regions to possible future changes in ballast availability. Article in Journal/Newspaper Arctic North Atlantic Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Arctic Southern Ocean Geophysical Research Letters 41 23 8460 8468 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Le Moigne, Frédéric A.C. Pabortsava, Katsiaryna Marcinko, Charlotte Martin, Patrick Sanders, Richard Where is mineral ballast important for surface export of particulate organic carbon in the ocean? |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Correlations between particulate organic carbon (POC) and mineral fluxes in the deep ocean have inspired the inclusion of "ballast effect" parameterizations in carbon cycle models. A recent study demonstrated regional variability in the effect of ballast minerals on the flux of POC in the deep ocean. We have undertaken a similar analysis of shallow export data from the Arctic, Atlantic, and Southern Oceans. Mineral ballasting is of greatest importance in the high-latitude North Atlantic, where 60% of the POC flux is associated with ballast minerals. This fraction drops to around 40% in the Southern Ocean. The remainder of the export flux is not associated with minerals, and this unballasted fraction thus often dominates the export flux. The proportion of mineral-associated POC flux often scales with regional variation in export efficiency (the proportion of primary production that is exported). However, local discrepancies suggest that regional differences in ecology also impact the magnitude of surface export. We propose that POC export will not respond equally across all high-latitude regions to possible future changes in ballast availability. |
author2 |
Ocean Biogeochemistry & Ecosystems Research Group National Oceanography Centre (NOC) University of Southampton National Oceanography Centre Southampton (NOC) |
format |
Article in Journal/Newspaper |
author |
Le Moigne, Frédéric A.C. Pabortsava, Katsiaryna Marcinko, Charlotte Martin, Patrick Sanders, Richard |
author_facet |
Le Moigne, Frédéric A.C. Pabortsava, Katsiaryna Marcinko, Charlotte Martin, Patrick Sanders, Richard |
author_sort |
Le Moigne, Frédéric A.C. |
title |
Where is mineral ballast important for surface export of particulate organic carbon in the ocean? |
title_short |
Where is mineral ballast important for surface export of particulate organic carbon in the ocean? |
title_full |
Where is mineral ballast important for surface export of particulate organic carbon in the ocean? |
title_fullStr |
Where is mineral ballast important for surface export of particulate organic carbon in the ocean? |
title_full_unstemmed |
Where is mineral ballast important for surface export of particulate organic carbon in the ocean? |
title_sort |
where is mineral ballast important for surface export of particulate organic carbon in the ocean? |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-02960919 https://hal.science/hal-02960919/document https://hal.science/hal-02960919/file/2014GL061678.pdf https://doi.org/10.1002/2014GL061678 |
geographic |
Arctic Southern Ocean |
geographic_facet |
Arctic Southern Ocean |
genre |
Arctic North Atlantic Southern Ocean |
genre_facet |
Arctic North Atlantic Southern Ocean |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-02960919 Geophysical Research Letters, 2015, 41 (23), pp.8460-8468. ⟨10.1002/2014GL061678⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2014GL061678 hal-02960919 https://hal.science/hal-02960919 https://hal.science/hal-02960919/document https://hal.science/hal-02960919/file/2014GL061678.pdf doi:10.1002/2014GL061678 |
op_rights |
http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2014GL061678 |
container_title |
Geophysical Research Letters |
container_volume |
41 |
container_issue |
23 |
container_start_page |
8460 |
op_container_end_page |
8468 |
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1769004219544633344 |