Three Types of Typhoon-Induced Upwellings Enhance Coastal Algal Blooms: A Case Study

doi:10.1029/2022JC018448

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Three Types of Typhoon-Induced Upwellings Enhance Coastal Algal Blooms: A Case Study
	Li, Yuxuan 1,2,3,4,5; Yang, Dezhou 1,2,3,4,5; Xu, Lingjing 1,2,4,5; Gao, Guandong 1,2,4,5; He, Zhiwei 1,2,3,4,5; Cui, Xuan 1,2,3,4,5; Jiang, Wenxin 1,2,3,4,5; Feng, Xingru 1,2,4,5; Yin, Baoshu 1,2,3,4,5
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2022-05-01
卷号	127 期号:5 页码:20
ISSN号	2169-9275
DOI	10.1029/2022JC018448
通讯作者	Yang, Dezhou(yangdezhou@qdio.ac.cn)
英文摘要	Satellite data show that typhoon Chan-hom did trigger an algal bloom several days after passing by the East China Sea. To investigate dynamic connections between this enhanced chlorophyll-a and phosphate-rich Kuroshio subsurface water (KSSW), we set up a fine-resolution coupled physical-biological model, which effectively reproduced the oceanic conditions during this typhoon. Furthermore, we released a passive tracer along a zonal transect northeast of Taiwan. The modeled surface tracer variations along the coast of Zhejiang agreed very well with satellite data and chlorophyll-a changes in the biological model. The lowest structural similarity index between chlorophyll-a and KSSW was 0.77. Model results along a coastal section imply that typhoon Chan-hom induced additional upwellings and enhanced vertical mixing, leading to more KSSW outcropping. Through horizontal dynamic diagnostic and vertical velocity decomposition, we distinguished three types of dynamical mechanisms for the upward motions. At first, the linear wind Ekman effect existed around the coastal areas and led to intense Ekman pumping. Second, a pronounced nonlinear effect led to upwellings, and spectrum analysis revealed that this nonlinearity consisted of high-frequency near-inertial waves and low-frequency coastal shelf waves. At last, an eddy field remained after the typhoon, continuously supplying nutrients upward to the surface layer by eddy-induced Ekman pumping. This study reveals that these mechanisms may be general on the continental shelf, where typhoons can pump phosphate-rich bottom water into the upper layer and enhance primary productivity there. The results also prove typhoon-induced nonlinear wave motions on the continental shelf contribute to the outcrop of nutrients.
资助项目	National Natural Science Foundation of China (NSFC)[41876019] ; National Natural Science Foundation of China (NSFC)[92158202] ; National Natural Science Foundation of China (NSFC)[42076022] ; Chinese Academy of Sciences[XDB42000000] ; Chinese Academy of Sciences[XDA19060203] ; Key Deployment Project of Centre for Ocean Mega-Research of Science[COMS2020Q01] ; National Key Research Development Program of China[2017YFC1404000] ; National Key Research Development Program of China[2016YFC1401601] ; National Key Research Development Program of China[2017YFA0604102] ; NSFC-Shandong Joint Fund[U1806227] ; Chinese Academy of Sciences ; Commonwealth Scientific and Industrial Research Organization (CSIRO) ; High-Performance Computing Center at the Institute of Oceanology Chinese Academy of Sciences (IOCAS) ; Offshore Marine Observation and Research Network (OMORN)
WOS研究方向	Oceanography
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000798227200001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/179278]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Yang, Dezhou
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Engn Lab Marine Ranching, Qingdao, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China 5.Pilot Natl Lab Marine Sci & Technol, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Li, Yuxuan,Yang, Dezhou,Xu, Lingjing,et al. Three Types of Typhoon-Induced Upwellings Enhance Coastal Algal Blooms: A Case Study[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2022,127(5):20.
APA	Li, Yuxuan.,Yang, Dezhou.,Xu, Lingjing.,Gao, Guandong.,He, Zhiwei.,...&Yin, Baoshu.(2022).Three Types of Typhoon-Induced Upwellings Enhance Coastal Algal Blooms: A Case Study.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,127(5),20.
MLA	Li, Yuxuan,et al."Three Types of Typhoon-Induced Upwellings Enhance Coastal Algal Blooms: A Case Study".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 127.5(2022):20.