A multi-level adaptation model of circulation for the western Indian Ocean

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dc.contributor.author Shaji, C.
dc.contributor.author Bahulayan, N.
dc.contributor.author Dube, S.K.
dc.contributor.author Rao, A.D.
dc.date.accessioned 2009-01-10T11:31:12Z
dc.date.available 2009-01-10T11:31:12Z
dc.date.issued 1999
dc.identifier.citation International Journal of Numerical Methods and Fluids, Vol.31; 1221-1264p.
dc.identifier.uri http://drs.nio.org/drs/handle/2264/1811
dc.description.abstract A three-dimensional, fully non-linear semi-diagnostic (adaptation) model is described. This model is used to compute the climatological mean circulation and to understand the role of local, steady forcing of the wind and thermohaline forcing on the observed circulation in the western tropical Indian Ocean. The model consists of equations of motion and continuity, sea surface topography, equations of state and temperature, and salinity diffusion equations. While the sea surface topography equation is solved by a succesive overrelaxation technique, the other model equations are solved by a leap-frog numerical scheme. Two versions of the model, having 18 and 33 levels in the vertical direction, were prepared to study climatological mean circulation in the western tropical Indian Ocean. The first numerical experiment is carried out with the 18-level adaptation model to study the sensitivity of the solution to different values of eddy coefficients. The main scientific rationale behind these numerical experiments was to obtain the most appropriate values of the eddy coefficients for the realistic computation of climatological circulation in the western tropical Indian Ocean. Three numerical experiments were conducted for the month of February to understand the sensitivity of the model solution to different eddy coefficients. The model reproduced the circulation features during February, even with low values of horizontal and vertical eddy coefficients. In the second experiment, the adaptation model, with 33 levels in the vertical dirction, is applied to study the seasonal mean climatological circulation at selected depths during Spring in the western tropical Indian Ocean
dc.language.iso en
dc.publisher John Wiley
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 ocean circulation
dc.subject surface topography
dc.subject surface temperature
dc.subject wind pressure
dc.subject thermohaline circulation
dc.subject experimental research
dc.subject models
dc.title A multi-level adaptation model of circulation for the western Indian Ocean
dc.type Journal Article

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