Formation and spreading of Arabian Sea high-salinity water mass

Show simple item record PrasannaKumar, S. Prasad, T.G. 2009-01-10T11:35:47Z 2009-01-10T11:35:47Z 1999
dc.identifier.citation Journal of Geophysical Research (C: Oceans), Vol.104; 1455-1464p.
dc.description.abstract The formation and seasonal spreading of the Arabian Sea High-Salinity Water (ASHSW) mass were studied based on the monthly mean climatology of temperature and salinity in the Arabian Sea, north of the equator and west of 80 degrees E, on a 2 degrees x 2 degrees grid. The ASHSW forms in the northern Arabian Sea during winter and spreads southward along a 24 sigma-t surfacae against the prevailing weak zonal currents. The eastern extent of the core is limited by the strong northward coastal current flowing along the west coast of India. During the southwest monsoon the northern part of the core shoals undet the influence of the Findlater Jet, while the southern part deepens. Throughout the year the southward extent of the ASHSW in inhibited by the equatorial currents. The atmospheric forcing that leads to the formation of ASHSW was delineated using the monthly mean climatology of heat and freshwater fluxes. Monsoon winds dominate all the flux fields during summer (June-September), while latent heat release during the relative calm of the winter (November-February) monsoon, driven by cool, dry continental air from the north, results in an increased density of the surface layer. Thus excess evaporation over precipitation and turbulent heat loss exceeding the radiative heat gain cool the surface waters of the northern Arabian Sea during winter and drive convective formation of ASHSW
dc.language.iso en
dc.publisher American Geophysical Union
dc.rights Copyright [1999]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subject water masses
dc.subject salinity
dc.subject water temperature
dc.subject seasonal variations
dc.subject sigma-t
dc.subject equatorial circulation
dc.subject atmospheric forcing
dc.subject heat transfer
dc.title Formation and spreading of Arabian Sea high-salinity water mass
dc.type Journal Article

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