气候变化领域集成服务门户(CCPortal): The strong upwelling event off the Southern coast of Sri Lanka in 2013 and its relationship with Indian ocean dipole events

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DOI	10.1175/JCLI-D-20-0620.1
	The strong upwelling event off the Southern coast of Sri Lanka in 2013 and its relationship with Indian ocean dipole events
	Li Y.; Qiu Y.; Hu J.; Aung C.; Lin X.; Jing C.; Zhang J.
发表日期	2021
ISSN	08948755
起始页码	3555
结束页码	3569
卷号	34 期号:9
英文摘要	Multisource satellite remote sensing data have been used to analyze the strong upwelling event off the southern coast of Sri Lanka in 2013 and its relationship with Indian Ocean dipole (IOD) events. The upwelling area in 2013 is 5.7 times larger than that in a normal year and lasts from June to August, with the peaks of the cooling anomaly reaching 21.58C and the positive chlorophyll a concentration anomaly exceeding 3.1 mg m23. In 2013, the negative unseasonable IOD (IODJJA) event enhances the southwest monsoon, while the blocking of the monsoon wind by the island results in a stronger westerly/northwesterly wind stress off the southern coast of Sri Lanka and a weaker westerly/ northwesterly wind stress over the eastern Sri Lanka waters. This causes stronger offshore transport and positive Ekman pumping off the southern coast, forming a strong upwelling event there. Further analysis indicates that the interannual variability of the upwelling, as represented by a newly constructed index based on satellite observations, is primarily caused by the variations of local wind associated with the IOD. The upwelling off the southern coast of Sri Lanka weakens (strengthens) in the positive (negative) IOD years. However, an analysis based on 21 IOD events during 1982-2019 demonstrates that the effects of the three types of IOD events, including IODJJA, prolonged IOD (IODLONG), and normal IOD (IODSON), on the upwelling are different. Compared to the IODSON events, the IODJJA and IODLONG events tend to have stronger influences due to their earlier developing phases. © 2021 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	Atmosphere-ocean interaction; Ekman pumping/transport; Ocean dynamics; Upwelling/downwelling; Wind stress
语种	英语
scopus关键词	Atmospheric thermodynamics; Offshore oil well production; Remote sensing; Wind stress; Chlorophyll-a concentration; Indian Ocean dipole; Indian ocean dipoles; Interannual variability; Satellite observations; Satellite remote sensing data; Southwest monsoon; Upwelling areas; Coastal engineering
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178616
作者单位	Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; Marine Science Department, Pathein University, Ministry of Education, Pathein, Myanmar
推荐引用方式 GB/T 7714	Li Y.,Qiu Y.,Hu J.,et al. The strong upwelling event off the Southern coast of Sri Lanka in 2013 and its relationship with Indian ocean dipole events[J],2021,34(9).
APA	Li Y..,Qiu Y..,Hu J..,Aung C..,Lin X..,...&Zhang J..(2021).The strong upwelling event off the Southern coast of Sri Lanka in 2013 and its relationship with Indian ocean dipole events.Journal of Climate,34(9).
MLA	Li Y.,et al."The strong upwelling event off the Southern coast of Sri Lanka in 2013 and its relationship with Indian ocean dipole events".Journal of Climate 34.9(2021).