NUMERICAL EXPERIMENT ON THE FORMATION OF THE DIPOLE SYSTEM AND BLOCKING STRUCTURE

In this paper,the dynamic effects of the westerlies basic flow in winter and Eastern Asia topography are emphasized,so as to investigate the seasonal and geographicl characters of the dipole blocking. The results of numerical experiment indicate that nonliner interaction between the westerlies basic flow and the topography forcing of Eastern Asia may not only result in a Asia circulation background,but also cause the formation of dipole blocking structure.