Biological Production of Distinct Carbon Pools Drives Particle Export Efficiency in the Southern Ocean
Abstract We use observations from the Southern Ocean (SO) biogeochemical profiling float array to quantify the meridional pattern of particle export efficiency (PEeff) during the austral productive season. Float estimates reveal a pronounced latitudinal gradient of PEeff, which is quantitatively sup...
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| Format: | Article |
| Language: | English |
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Wiley
2024-06-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2023GL107511 |
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| author | Yibin Huang Andrea J. Fassbender |
| author_facet | Yibin Huang Andrea J. Fassbender |
| author_sort | Yibin Huang |
| collection | DOAJ |
| description | Abstract We use observations from the Southern Ocean (SO) biogeochemical profiling float array to quantify the meridional pattern of particle export efficiency (PEeff) during the austral productive season. Float estimates reveal a pronounced latitudinal gradient of PEeff, which is quantitatively supported by a compilation of existing ship‐based measurements. Relying on complementary float‐based estimates of distinct carbon pools produced through biological activity, we find that PEeff peaks near the region of maximum particulate inorganic carbon sinking flux in the polar antarctic zone, where net primary production (NPP) is the lowest. Regions characterized by intermediate NPP and low PEeff, primarily in the subtropical and seasonal ice zones, are generally associated with a higher fraction of dissolved organic carbon production. Our study reveals the critical role of distinct biogenic carbon pool production in driving the latitudinal pattern of PEeff in the SO. |
| format | Article |
| id | doaj-art-e140001e315c4d6dbe694afff2ba088f |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-e140001e315c4d6dbe694afff2ba088f2025-08-20T01:52:06ZengWileyGeophysical Research Letters0094-82761944-80072024-06-015112n/an/a10.1029/2023GL107511Biological Production of Distinct Carbon Pools Drives Particle Export Efficiency in the Southern OceanYibin Huang0Andrea J. Fassbender1State Key Laboratory of Marine Environmental Science College of Ocean and Earth Sciences, Xiamen University Xiamen ChinaNOAA/OAR Pacific Marine Environmental Laboratory Seattle WA USAAbstract We use observations from the Southern Ocean (SO) biogeochemical profiling float array to quantify the meridional pattern of particle export efficiency (PEeff) during the austral productive season. Float estimates reveal a pronounced latitudinal gradient of PEeff, which is quantitatively supported by a compilation of existing ship‐based measurements. Relying on complementary float‐based estimates of distinct carbon pools produced through biological activity, we find that PEeff peaks near the region of maximum particulate inorganic carbon sinking flux in the polar antarctic zone, where net primary production (NPP) is the lowest. Regions characterized by intermediate NPP and low PEeff, primarily in the subtropical and seasonal ice zones, are generally associated with a higher fraction of dissolved organic carbon production. Our study reveals the critical role of distinct biogenic carbon pool production in driving the latitudinal pattern of PEeff in the SO.https://doi.org/10.1029/2023GL107511carbon exportsinking particlesBGC‐ArgoSouthern Oceanexport efficiencydissolved organic carbon |
| spellingShingle | Yibin Huang Andrea J. Fassbender Biological Production of Distinct Carbon Pools Drives Particle Export Efficiency in the Southern Ocean Geophysical Research Letters carbon export sinking particles BGC‐Argo Southern Ocean export efficiency dissolved organic carbon |
| title | Biological Production of Distinct Carbon Pools Drives Particle Export Efficiency in the Southern Ocean |
| title_full | Biological Production of Distinct Carbon Pools Drives Particle Export Efficiency in the Southern Ocean |
| title_fullStr | Biological Production of Distinct Carbon Pools Drives Particle Export Efficiency in the Southern Ocean |
| title_full_unstemmed | Biological Production of Distinct Carbon Pools Drives Particle Export Efficiency in the Southern Ocean |
| title_short | Biological Production of Distinct Carbon Pools Drives Particle Export Efficiency in the Southern Ocean |
| title_sort | biological production of distinct carbon pools drives particle export efficiency in the southern ocean |
| topic | carbon export sinking particles BGC‐Argo Southern Ocean export efficiency dissolved organic carbon |
| url | https://doi.org/10.1029/2023GL107511 |
| work_keys_str_mv | AT yibinhuang biologicalproductionofdistinctcarbonpoolsdrivesparticleexportefficiencyinthesouthernocean AT andreajfassbender biologicalproductionofdistinctcarbonpoolsdrivesparticleexportefficiencyinthesouthernocean |