The isopycnal surfaces dip down in the center of the subtropical gyre at about 30° latitude. The formation of this gyre of light warm water is related to the climatological distribution of surface winds, which produce a convergence of Ekman transport towards the center of the gyre, and a downwelling of surface waters into the interior of the ...

2022年1月1日 · Applying the concepts of shear dispersion to isopycnal mixing in the ocean interior, Young et al. (1982) showed that the interaction between diapycnal diffusivity and sinusoidally varying velocities u (z, t), caused by internal waves will result in an effective isopycnal diffusivity that is proportional to the diapycnal diffusivity, and with ...

2013年12月1日 · The isopycnal diffusivity in the channel, estimated from the 16-member ensemble mean, is plotted as a function of depth in Fig. 11. It increases from about 500 m 2 s - 1 in subsurface to slightly more than 4000 m 2 s - 1 around 1100 m depth, and then decreases to 3500 m 2 s - 1 near the bottom.

2022年8月1日 · This work is based on isopycnal coordinates and obtains its corresponding expression in Cartesian coordinates through a series of coordinate transformations. Adding the Redi tensors to numerical models of Cartesian coordinates has been shown to produce a more realistic thermocline and reduce spurious diapycnal mixing ( Gough and Lin, 1995 ).

2006年8月1日 · Results from a numerical, isopycnal ocean model (de Steur et al., 2004) show that heat and salt anomalies associated with Agulhas rings are entrained within the upper branch of the thermocline circulation as they cross the Cape Basin, with up to 40% of the trapped thermocline water mixed with the environment during the first few months of the ...

2022年8月1日 · The isopycnal mixing profile in the Philippine Sea estimated from two popular eddy-resolving ocean models (HYCOM, OFES) does not have a significant subsurface maximum value (see Fig7 in Nan et al., 2019), which indicates that the current mesoscale parameterization used in the ocean models (e.g., Gent and McWilliams, 1990) is still not suitable ...

2022年8月1日 · This work is based on isopycnal coordinates and obtains its corresponding expression in Cartesian coordinates through a series of coordinate transformations. Adding the Redi tensors to numerical models of Cartesian coordinates has been shown to produce a more realistic thermocline and reduce spurious diapycnal mixing (Gough and Lin, 1995).

2009年12月10日 · Continuous isopycnal coordinates use target interface densities to define layers. In contrast to traditional layered isopycnal models, in which along-layer density gradients vanish, general coordinate approaches must deal with extra terms. For example, the calculation of pressure gradient force is more complicated and must be evaluated carefully.

2009年1月1日 · While for the two-dimensionally zonal mean case a scalar isopycnal diffusivity is sufficient, for the three-dimensional case of temporal averaging an isopycnal diffusivity tensor with two independent components is needed to describe the mesoscale eddy effects, in analogy to what have been found by Eden et al. (2007b) for the thickness ...

1985年1月1日 · The Isopycnal Swallow Float-A Simple Device for Tracking Water Parcels in the Ocean H. T. ROSSBY,* E. R. LEVINEt and D. N. CONNORSt *Graduate School of Oceanography, University of Rhode Island, Kingston, R102881, U.S.A. t Applied Oceanography Group, Naval Underwater Systems Center, Newport, R102840, U.S.A. Abstract-A standard Swallow float can ...