Physically modulated phytoplankton production and export at submesoscales in the oligotrophic South China Sea Basin.
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| Title: | Physically modulated phytoplankton production and export at submesoscales in the oligotrophic South China Sea Basin. |
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| Authors: | Zhao, Zhonghua1,2 (AUTHOR), Xu, Mengdi1,2 (AUTHOR), Huang, Bangqin1,3,4 (AUTHOR), Lu, Wenfang5 (AUTHOR), Qi, Hongshuai6 (AUTHOR), Cai, Feng6 (AUTHOR) caifeng@tio.org.cn, Jiang, Yuwu1,2,4 (AUTHOR) ywjiang@xmu.edu.cn |
| Source: | SCIENCE CHINA Earth Sciences. Aug2024, Vol. 67 Issue 8, p2681-2698. 18p. |
| Subjects: | Baroclinicity, Mixing height (Atmospheric chemistry), Algal blooms, Winter, Biomass |
| Abstract: | Oceanic submesoscales can significantly influence phytoplankton production and export owing to their similar timescales of days. Based on two-year Biogeochemical Argo (BGC-Argo) observations, this study investigated the development of submesoscale instabilities, particularly symmetric and mixed-layer baroclinic instabilities, and their impacts on biological production and export in the oligotrophic South China Sea basin. In the northern basin, near-surface winter blooms consistently cooccurred with seasonally deepened mixed layers. However, significantly stronger and weaker winter blooms were observed over two consecutive winters within the BGC-Argo observation period. During the first winter, symmetric-instability-induced upward nutrient entrainment played a crucial role in initiating the strong winter bloom in early December, when the mixed layer was approximately 20–30 m shallower than the nutricline. This bloom occurred approximately 20–30 days earlier than that anticipated owing to the contact between the seasonally deepened mixed layer and mesoscale-cyclone-induced uplifted nutricline. The symmetric instability also facilitated the export of fixed phytoplankton carbon from the surface to deeper layers. Conversely, during the second winter, remarkably intense mixed-layer baroclinic instability associated with an intense mesoscale anticyclone led to more significant shoaling of the mixed layer compared to the nutricline, thus increasing the vertical distance between the two layers. Under this condition, upward nutrient injection, phytoplankton bloom, and carbon export were suppressed. In contrast, the BGC-Argo float in the central basin revealed significantly inhibited seasonality of phytoplankton biomass and submesoscale instabilities compared to those in the northern basin, primarily owing to the significantly shallower winter mixed layer. [ABSTRACT FROM AUTHOR] |
| Copyright of SCIENCE CHINA Earth Sciences is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 178678307 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Physically modulated phytoplankton production and export at submesoscales in the oligotrophic South China Sea Basin. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zhao%2C+Zhonghua%22">Zhao, Zhonghua</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Mengdi%22">Xu, Mengdi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Bangqin%22">Huang, Bangqin</searchLink><relatesTo>1,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lu%2C+Wenfang%22">Lu, Wenfang</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qi%2C+Hongshuai%22">Qi, Hongshuai</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cai%2C+Feng%22">Cai, Feng</searchLink><relatesTo>6</relatesTo> (AUTHOR)<i> caifeng@tio.org.cn</i><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Yuwu%22">Jiang, Yuwu</searchLink><relatesTo>1,2,4</relatesTo> (AUTHOR)<i> ywjiang@xmu.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22SCIENCE+CHINA+Earth+Sciences%22">SCIENCE CHINA Earth Sciences</searchLink>. Aug2024, Vol. 67 Issue 8, p2681-2698. 18p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Baroclinicity%22">Baroclinicity</searchLink><br /><searchLink fieldCode="DE" term="%22Mixing+height+%28Atmospheric+chemistry%29%22">Mixing height (Atmospheric chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Algal+blooms%22">Algal blooms</searchLink><br /><searchLink fieldCode="DE" term="%22Winter%22">Winter</searchLink><br /><searchLink fieldCode="DE" term="%22Biomass%22">Biomass</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Oceanic submesoscales can significantly influence phytoplankton production and export owing to their similar timescales of days. Based on two-year Biogeochemical Argo (BGC-Argo) observations, this study investigated the development of submesoscale instabilities, particularly symmetric and mixed-layer baroclinic instabilities, and their impacts on biological production and export in the oligotrophic South China Sea basin. In the northern basin, near-surface winter blooms consistently cooccurred with seasonally deepened mixed layers. However, significantly stronger and weaker winter blooms were observed over two consecutive winters within the BGC-Argo observation period. During the first winter, symmetric-instability-induced upward nutrient entrainment played a crucial role in initiating the strong winter bloom in early December, when the mixed layer was approximately 20–30 m shallower than the nutricline. This bloom occurred approximately 20–30 days earlier than that anticipated owing to the contact between the seasonally deepened mixed layer and mesoscale-cyclone-induced uplifted nutricline. The symmetric instability also facilitated the export of fixed phytoplankton carbon from the surface to deeper layers. Conversely, during the second winter, remarkably intense mixed-layer baroclinic instability associated with an intense mesoscale anticyclone led to more significant shoaling of the mixed layer compared to the nutricline, thus increasing the vertical distance between the two layers. Under this condition, upward nutrient injection, phytoplankton bloom, and carbon export were suppressed. In contrast, the BGC-Argo float in the central basin revealed significantly inhibited seasonality of phytoplankton biomass and submesoscale instabilities compared to those in the northern basin, primarily owing to the significantly shallower winter mixed layer. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of SCIENCE CHINA Earth Sciences is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=178678307 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11430-023-1362-1 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 2681 Subjects: – SubjectFull: Baroclinicity Type: general – SubjectFull: Mixing height (Atmospheric chemistry) Type: general – SubjectFull: Algal blooms Type: general – SubjectFull: Winter Type: general – SubjectFull: Biomass Type: general Titles: – TitleFull: Physically modulated phytoplankton production and export at submesoscales in the oligotrophic South China Sea Basin. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zhao, Zhonghua – PersonEntity: Name: NameFull: Xu, Mengdi – PersonEntity: Name: NameFull: Huang, Bangqin – PersonEntity: Name: NameFull: Lu, Wenfang – PersonEntity: Name: NameFull: Qi, Hongshuai – PersonEntity: Name: NameFull: Cai, Feng – PersonEntity: Name: NameFull: Jiang, Yuwu IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 16747313 Numbering: – Type: volume Value: 67 – Type: issue Value: 8 Titles: – TitleFull: SCIENCE CHINA Earth Sciences Type: main |
| ResultId | 1 |
