气候变化领域集成服务门户(CCPortal): Characteristics and vertical structure of oceanic mesoscale eddies in the Bay of Bengal

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DOI	10.1016/j.dynatmoce.2020.101131
	Characteristics and vertical structure of oceanic mesoscale eddies in the Bay of Bengal
	Gulakaram V.S.; Vissa N.K.; Bhaskaran P.K.
发表日期	2020
ISSN	03770265
卷号	89
英文摘要	The signatures of mesoscale eddies induced surface and subsurface changes have not been comprehensively quantified for the Bay of Bengal (BoB) region. This study quantifies the statistical properties and three-dimensional (3D) eddy structures in the BoB. To accomplish this, the satellite altimetry data combined with automated eddy detection and tracking algorithm is used. Horizontal distribution of surface characteristics of eddies is analyzed by using 24 years (1993–2016) of AVHRR infrared satellite sea surface temperature (SST) and 7 years (2010–2016) of sea surface salinity (SSS) of SMOS satellite data. Surface eddy centric composite analysis reveals the existence of warm (cold) and diverse SSS anomalies for anticyclonic (cyclonic) eddies. During winter, it is important to note that the eddy induced SST and SSS anomalies show the dipole patterns show opposite phases for the cyclonic and anticyclonic eddies. Observed diploe structures are consistent with the eddy rotation and background large-scale meridional gradient of temperature and salinity fields. The 3D structure of eddies is investigated by using the ARMOR3D and Argo float profiles. The horizontal distribution of temperature and salinity anomalies from ARMOR3D signify the monopole structure of eddies in the subsurface layers. Further, the analysis of composite averages of 241 (200) Argo temperature profiles indicates the core of anticyclonic (cyclonic) eddies centered at about ∼140 m (∼100 m). However, salinity profiles depict the existence of core at ∼65 m (∼50 m). This study have practical relevance to a variety of stakeholders and finds profound importance in the validation of eddy-resolving ocean models for the BoB region. © 2020 Elsevier B.V.
英文关键词	ARMOR3D; Bay of Bengal; Mesoscale eddies; Three-dimensional structure
语种	英语
scopus关键词	Satellites; Surface waters; ARMOR3D; Bay of Bengal; Horizontal distribution; Mesoscale eddy; Satellite altimetry data; Sea surface temperature (SST); Surface characteristics; Three-dimensional structure; Oceanography; algorithm; Argo; AVHRR; marine atmosphere; mesoscale eddy; satellite altimetry; sea surface salinity; sea surface temperature; three-dimensional modeling; Bay of Bengal; Indian Ocean
来源期刊	Dynamics of Atmospheres and Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178327
作者单位	Department of Earth and Atmospheric Sciences, National Institute of Technology Rourkela, Dist: SundargarhOdisha 769008, India; Department of Ocean Engineering & Naval Architecture Indian Institute of Technology, Kharagpur, West Bengal 721302, India
推荐引用方式 GB/T 7714	Gulakaram V.S.,Vissa N.K.,Bhaskaran P.K.. Characteristics and vertical structure of oceanic mesoscale eddies in the Bay of Bengal[J],2020,89.
APA	Gulakaram V.S.,Vissa N.K.,&Bhaskaran P.K..(2020).Characteristics and vertical structure of oceanic mesoscale eddies in the Bay of Bengal.Dynamics of Atmospheres and Oceans,89.
MLA	Gulakaram V.S.,et al."Characteristics and vertical structure of oceanic mesoscale eddies in the Bay of Bengal".Dynamics of Atmospheres and Oceans 89(2020).