摘要
In this paper, the tropical Pacific layer model of characteristic modes was developed, which improves andper feets the first vertical baroclinic mode model currently used in ENSO dynamic studies. The dynamic mechanisms andstructures of tropical Pacific thermoclinic depth disturbances were further detected. These studies demonstrate that, inaddition to the momentum exchange between oceanic mixed layer (surface layer) and thermoclinic layer (subsurface layer)which is an important dynamic mechanism triggering the thermoclinic depth disturbances, the vertical sea water mass ex change between oceanic layers plays an important dynamic role in triggering thermoclinic depth disturbances. Both kindsof physical processes excit different kind of dynamic modes and exhibit different structures, respectively. The disturbancesinduced by both kinds of dynamic modes intensify each other. The dynamic mechanism and dynamic processes of El Ninodeveloping are also discussed in the paper.
In this paper, the tropical Pacific layer model of characteristic modes was developed, which improves andper feets the first vertical baroclinic mode model currently used in ENSO dynamic studies. The dynamic mechanisms andstructures of tropical Pacific thermoclinic depth disturbances were further detected. These studies demonstrate that, inaddition to the momentum exchange between oceanic mixed layer (surface layer) and thermoclinic layer (subsurface layer)which is an important dynamic mechanism triggering the thermoclinic depth disturbances, the vertical sea water mass ex change between oceanic layers plays an important dynamic role in triggering thermoclinic depth disturbances. Both kindsof physical processes excit different kind of dynamic modes and exhibit different structures, respectively. The disturbancesinduced by both kinds of dynamic modes intensify each other. The dynamic mechanism and dynamic processes of El Ninodeveloping are also discussed in the paper.
