2020
DOI: 10.1175/jpo-d-20-0133.1
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Influence of River Discharge and Tides on the Summertime Discontinuity of Western Boundary Current in the Bay of Bengal

Abstract: East India Coastal Current (EICC), the Western Boundary Current (WBC) in the Bay of Bengal (BOB), is continuous and well–directed during pre– and post–Monsoon, but discontinuous during monsoon (June–September). This study examines the individual and combined effects of river discharge and tidal forcing on the EICC discontinuity using high resolution (1/12°) Regional Ocean Modeling System simulations. Four climatological experiments, a control simulation with normal boundary conditions and three other sensitivi… Show more

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Cited by 9 publications
(4 citation statements)
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“…The study uses three Regional Ocean Modelling System (ROMS) simulations (1/12°), a climatological control simulation (Clim) and two sensitivity experiments with tides (Tide) and with river-tide (RiTd). The model configurations and the validations of the simulated outcomes can be found at Das et al (2020).…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…The study uses three Regional Ocean Modelling System (ROMS) simulations (1/12°), a climatological control simulation (Clim) and two sensitivity experiments with tides (Tide) and with river-tide (RiTd). The model configurations and the validations of the simulated outcomes can be found at Das et al (2020).…”
Section: Methodsmentioning
confidence: 99%
“…The tidal forcing contributes huge energy for ocean mixing and modulates the whole upper ocean processes. Earlier studies with the assessment of tidal contributions over the BoB are mostly limited to the circulations (Bhagawati et al 2018;Das et al 2020). So, this study focuses on the tide induced upper ocean mixing and the air-sea exchanges in the BoB.…”
Section: Introductionmentioning
confidence: 99%
“…However, BoB has comparatively less saline waters (29-33 psu) due to the high amount of river discharge (Dandapat et al, 2020). The salinity drops by 2-3 psu in BoB and the seasonal lowest is found in the northern region during autumn-winter, which is due to high river in ux in summer and seasonal strati cation (Das et al, 2020;Sridevi et al, 2015). The highest positive trend of salinity in IO is observed in the eastern AS (0.15 psu/yr) during summer and autumn (Fig.…”
Section: Temperature and Salinitymentioning
confidence: 99%
“…Nevertheless, wind forcing is the primary source of the seasonal variability in the largescale ocean circulation and the seasonal reversals of boundary currents in the north Indian Ocean (Suryanarayana et al 1993, Shankar et al 2002, Rao et al 2010. Research efforts to date have mostly focused on modern features of the EICC/WICC, such as their roles in tropical air-sea interaction (Patnaik et al 2014), their seasonal variability (Das et al 2020, Sen et al 2022, and their contributions to material exchange between the Bay of Bengal and the Arabian Sea (Varna et al 2021, Zhu et al 2022. However, their long-term history is less well known, limiting predictions of their future evolution.…”
Section: Introductionmentioning
confidence: 99%