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A case study of a phytoplankton bloom triggered by a tropical cyclone and cyclonic eddies
Lu, Haibin1; Zhao, Xingyu; Sun, Jialong; Zha, Guozhen; Xi, Jingyuan2; Cai, Shuqun1,3
2020
Source PublicationPLOS ONE
ISSN1932-6203
Volume15Issue:4Pages:e0230394
AbstractStrong tropical cyclone (TC) Ockhi occurred in the southeastern Arabian Sea (AS) in 2017. Ockhi greatly changed the oceanic conditions and induced large variation in chlorophyll-a (Chl-a). The dynamic mechanisms of the long-term phytoplankton bloom after the passage of the TC were investigated in this study. Prominent surface ocean responses, e.g., decreasing temperature and salinity, were identified from Argo data by comparing the pre- and post-conditions of the TC. A phytoplankton bloom was observed in southeastern AS after the passage of TC Ockhi within the area of (11 degrees N-14 degrees N, 67 degrees E-70 degrees E) and lasted for seven days. Interestingly, there were two weaker cyclonic eddies, with an average vorticity of less than 0.14 s(-1), on the TC trajectory from November 28 to December 2. As Ockhi approached, strong vertical mixing occurred on December 3, increasing the eddy vorticity to 0.26 s(-1). After the passage of Ockhi, both eddies, with a two-day oscillation period, were substantially enhanced. Especially from December 11 to 16, the vorticity above 70 m was as high as 0.2 s(-1) in the thermocline. Because of the high photosynthetically available radiation (PAR) and low precipitation, the enhanced cyclonic eddies induced upwelling for the entire thermocline for over ten days and uplifted nitrates into the mixed layer. This study offers new insights on the influence of eddies in regulating the impacts of typhoons on Chl-a, and the results can help evaluate typhoon-induced biological responses in the future.
DepartmentLMB
Funding OrganizationPriority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1702]; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0304]; Natural Science Foundation of Huai Hai Institute of Technology [Z2017006]; Natural Science Foundation of Jiangsu ProvinceJiangsu Planned Projects for Postdoctoral Research FundsNatural Science Foundation of Jiangsu Province [BK20181072]; Natural Science Foundation of the Jiangsu Higher Education Institutions of ChinaNational Natural Science Foundation of China (NSFC) [18KJB440003] ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1702]; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0304]; Natural Science Foundation of Huai Hai Institute of Technology [Z2017006]; Natural Science Foundation of Jiangsu ProvinceJiangsu Planned Projects for Postdoctoral Research FundsNatural Science Foundation of Jiangsu Province [BK20181072]; Natural Science Foundation of the Jiangsu Higher Education Institutions of ChinaNational Natural Science Foundation of China (NSFC) [18KJB440003]
DOI10.1371/journal.pone.0230394
Funding OrganizationPriority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1702]; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0304]; Natural Science Foundation of Huai Hai Institute of Technology [Z2017006]; Natural Science Foundation of Jiangsu ProvinceJiangsu Planned Projects for Postdoctoral Research FundsNatural Science Foundation of Jiangsu Province [BK20181072]; Natural Science Foundation of the Jiangsu Higher Education Institutions of ChinaNational Natural Science Foundation of China (NSFC) [18KJB440003] ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences [LTO1702]; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0304]; Natural Science Foundation of Huai Hai Institute of Technology [Z2017006]; Natural Science Foundation of Jiangsu ProvinceJiangsu Planned Projects for Postdoctoral Research FundsNatural Science Foundation of Jiangsu Province [BK20181072]; Natural Science Foundation of the Jiangsu Higher Education Institutions of ChinaNational Natural Science Foundation of China (NSFC) [18KJB440003]
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/18453
Collection中科院海洋生物资源可持续利用重点实验室
Affiliation1.Jiangsu Ocean Univ, Jiangsu Key Lab Marine Bioresources & Environm, Jiangsu Key Lab Marine Biotechnol, Lianyungang, Jiangsu, Peoples R China
2.Chinese Acad Sci, State Key Lab Oceanog Trop, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
3.Minist Nat Resources, State Key Lab Satellite Ocean Environm Dynam, Inst Oceanog 2, Hangzhou, Zhejiang, Peoples R China
4.Southern Marine Sci & Engn Guangdong Lab, Guangzhou, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Lu, Haibin,Zhao, Xingyu,Sun, Jialong,et al. A case study of a phytoplankton bloom triggered by a tropical cyclone and cyclonic eddies[J]. PLOS ONE,2020,15(4):e0230394.
APA Lu, Haibin,Zhao, Xingyu,Sun, Jialong,Zha, Guozhen,Xi, Jingyuan,&Cai, Shuqun.(2020).A case study of a phytoplankton bloom triggered by a tropical cyclone and cyclonic eddies.PLOS ONE,15(4),e0230394.
MLA Lu, Haibin,et al."A case study of a phytoplankton bloom triggered by a tropical cyclone and cyclonic eddies".PLOS ONE 15.4(2020):e0230394.
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