论文部分内容阅读
The oceanic meridional volume trans-port (MVT) in the North Subtropical Pacific is calcu-lated directly from an observed velocity field (realMVT) and indirectly from wind stress based on Sver-drup balance, respectively. It is confirmed that theSverdrup MVT is a good approximation to the realMVT for the North Subtropical Pacific except in thewestern boundary region, where the difference isexpected because of frictional and nonlinear effects.The time evolution of the MVT derived from a revisedSverdrup balance, in which a time delay due to thepropagation of the first baroclinic Rossby wave isconsidered, is well correlated with that of the realMVT on decadal time scale, especially near thewestern boundary region. It is suggested that theSverdrup balance can be used to study not only themean climatology of the oceanic circulation, but alsothe time-dependent oceanic circulation of the NorthSubtropical Pacific when the Rossby wave propaga-tion is taken into account.
The oceanic meridional volume trans-port (MVT) in the North Subtropical Pacific is calcu-lated directly from an observed velocity field (realMVT) and indirectly from wind stress based on Sver-drup balance, respectively. It is confirmed that theververrup MVT is a good approximation to the realMVT for the North Subtropical Pacific except in the western boundary region, where the difference is expected because of frictional and nonlinear effects. The time evolution of the MVT derived from a revised Sanverrup balance, in which a time delay due to the propagation of the first barclinic Rossby wave isconsidered, is well correlated with that of the of realMVT on decadal time scale, especially near the western boundary region. It is suggested that theSverdrup balance can be used to study not only themean climatology of the oceanic circulation, but alsothe time-dependent oceanic of the NorthSubtropical Pacific when the Rossby wave propagate is taken into account.