From a 3-dimensional eddy-resolving
numerical model of the South China Sea
(SCS), we found that there is a cyclonic
circulation in the deep basin (below 1000m)
throughout the year. The strong upwelling of
the deep SCS water is associated with this
circulation pattern. Besides the mean
cyclonic circulation, there is also a westward
propagating Rossby wave of an annual
period in the depth region below the main
thermocline (below 250 m).
