TY - JOUR
JF - JPG
JO - JPG
VL - 6
IS - 22
PY - 2015
Y1 - 2015/10/01
TI - A Mathematical Model for Indian Ocean Circulation in Spherical Coordinate
TT -
N2 - In recent years, the Indian Ocean (IO) has been discovered to have a much larger impact on climate variability than previously thought. This paper reviews processes in which the IO is, or appears to be, actively involved. We begin the mathematical model with a pattern for summer monsoon winds. Three dimensional temperature and velocity fields are calculated analytically for the ocean forced by wind stress and surface heat flux. A basic thermal state involving a balance of lateral and vertical heat diffusion is assumed. The wind stress is chosen such that a tropical mass transport gyre is generated. An effect of nonlinear heat advection is calculated by a perturbation method. The zero order temperature field gives a rough overall representation of oceanic thermocline. A baroclinic eastward flow in the upper part, with a westward return flow below is associated with this field.This circulation is closed through thin up and downwelling layers at the sides. Superimposed, there is a barotropic wind driven circulation, with a transport field of the type described by Munk. The interior temperature field to the next order is affected, not only by interior heat advection but also by heat advection in the Ekman layer, in the up and downwelling layers and in the main western boundary current.
SP - 61
EP - 78
AU - Ghazi Mirsaeid, Mojgan
AU - Mehdi Mehdizadeh, Mohammad
AU - Bannazadeh, Mohammad Reza
AD - Department of Physical Oceanography, Faculty of Marine Science and Technology, Hormozgan University, Hormozgan, IR Iran
KW - Spherical coordinate
KW - Heat advection
KW - Circulation
KW - Indian Ocean
UR - http://jpg.inio.ac.ir/article-1-446-en.html
ER -