Interaction between the Subtropical and Equatorial Ocean Circulations: The Subtropical Cell

摘要: Abstract Three versions of a 2 1/2-layer ocean model are used to study the subtropical cell (STC), shallow, meridionalcirculation consisting subduetion, equatorward advection cool subsurface water into thetropics, upwelling at equator, and poleward warm surface back midlatitudes. Thethree steady-state analytic model, numerical with constant layer temperatures, anumerical variable temperatures active thermodynamics. Two different pammeterizationsof mixed-layer processes utilized determine how moves between lwo layers. In simplerparameterization, entrainment detrainment rates, we wd, specified so that upper-layer thicknessh1 relaxes an externally prescribed thickness; in other, they related heat flux Q.in both is cut off latitude yd = 18° prevent subduction from occurring thetropics. Solutions obtained ...