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DOI10.1029/2020GL087215
Equatorial Circulation in the Western Indian Ocean During Onset of the 2018 Summer Monsoon and Links to the Bay of Bengal
Todd R.E.
发表日期2020
ISSN 0094-8276
卷号47期号:10
英文摘要Cross-equator transects occupied by an underwater glider and a research vessel in the western Indian Ocean captured the evolution of equatorial circulation during onset of the boreal summer monsoon in 2018. At the end of the winter monsoon in March, surface currents were westward, while the equatorial undercurrent carried salty Arabian Sea High-Salinity Water eastward. As winds transitioned from westward to eastward during April, an eastward near-surface Wyrtki Jet developed, while the equatorial undercurrent weakened, vanishing by May. A first-mode baroclinic Kelvin wave propagated through the survey region after westward winds relaxed. However, the vertical structure of the evolving circulation was inconsistent with the first baroclinic mode, suggesting the influence of higher modes in setting observed vertical structure. The strong equatorial undercurrent at the end of the winter monsoon allowed high-salinity waters from the western equatorial Indian Ocean to reach the southern Bay of Bengal in summer 2018. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词Ships; Baroclinic mode; Equatorial Indian Ocean; Equatorial undercurrents; Research vessels; Surface current; Underwater gliders; Vertical structures; Western indian oceans; Atmospheric thermodynamics; baroclinic wave; equatorial wave; jet; Kelvin wave; monsoon; oceanic circulation; oceanic current; research vessel; salinity; vertical movement; Arabian Sea; Bay of Bengal; Indian Ocean; Indian Ocean (West)
语种英语
来源期刊Geophysical Research Letters
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/170326
作者单位Woods Hole Oceanographic Institution, Woods Hole, MA, United States
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Todd R.E.. Equatorial Circulation in the Western Indian Ocean During Onset of the 2018 Summer Monsoon and Links to the Bay of Bengal[J],2020,47(10).
APA Todd R.E..(2020).Equatorial Circulation in the Western Indian Ocean During Onset of the 2018 Summer Monsoon and Links to the Bay of Bengal.Geophysical Research Letters,47(10).
MLA Todd R.E.."Equatorial Circulation in the Western Indian Ocean During Onset of the 2018 Summer Monsoon and Links to the Bay of Bengal".Geophysical Research Letters 47.10(2020).
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