Record Details

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

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title A multi-level adaptation model of circulation for the western Indian Ocean
 
Creator Shaji, C.
Bahulayan, N.
Dube, S.K.
Rao, A.D.
 
Subject ocean circulation
surface topography
surface temperature
wind pressure
thermohaline circulation
experimental research
models
 
Description 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
 
Date 2009-01-10T11:31:12Z
2009-01-10T11:31:12Z
1999
 
Type Journal Article
 
Identifier International Journal of Numerical Methods and Fluids, Vol.31; 1221-1264p.
http://drs.nio.org/drs/handle/2264/1811
 
Language en
 
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.
 
Publisher John Wiley