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dc.contributor.authorJithin, A.K.
dc.contributor.authorShankar,D.
dc.contributor.authorSubeesh, M.P.
dc.contributor.authorAparna, S.G.
dc.date.accessioned2026-04-15
dc.date.accessioned2026-04-15T09:54:21Z
dc.date.available2026-03-25
dc.date.available2026-04-15T09:54:21Z
dc.date.issued2026
dc.identifier.citationJournal of Marine Systems;vol.255;2026;article no:104211
dc.identifier.issn0924-7963
dc.identifier.otherhttps://doi.org/10.1016/j.jmarsys.2026.104211.
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0924796326000333
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9647
dc.descriptionIF2024=2.5
dc.description.abstractUsing simulations from a high-resolution (?2.3 km) Regional Ocean Modelling System (ROMS), we investigate the mechanism of formation of two seasonally occurring long-lived sea-surface-temperature (SST) fronts, namely the West India Shelf-Slope Front (WISSF) and the West India Mid-Shelf Front (WIMSF), which have been shown to occur during the winter monsoon in the northeastern Arabian Sea (NEAS). The simulations reveal that the WISSF forms along the edges of the poleward West India Coastal Current (WICC). This occurs as the WICC advects warm water along the shelf break into cooler ambient waters on either side of the NEAS, which are cooled by surface heat loss. Even though the surface heat loss in the Gulf of Khambhat (GoKb) is less than offshore on the shelf or in the deeper NEAS, the lowest SSTs occur in the gulf owing to its shallowness. This differential cooling leads to the formation of WIMSF, which forms the boundary between the cold waters of the gulf and the warmer waters offshore. Our study show that though these large-scale processes, advection by the WICC and surface cooling by atmospheric fluxes, drive the formation of the SST fronts in the NEAS, tidal forcing is important to simulate their positions accurately because the tidal currents control advection of cold water from the GoKb onto the shelf and vertical mixing due to the tides determines the location of the front at the shelf break.
dc.languageen
dc.publisherElsevier
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.subjectSST fronts
dc.subjectEastern Arabian Sea
dc.subjectWinter cooling
dc.subjectWest India Coastal Current
dc.subjectTides
dc.subjectGulf of Khambhat
dc.titleMechanism of formation of seasonal sea surface temperature fronts in the northeastern Arabian Sea
dc.typeResearch Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Kochi, Kerala, India


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