THE FORCING OF ANOMALOUS DIVERGENT WIND AND TRANSIENT VORTICITY FLUXES TO THE ANOMALY OF STATIONARY WAVES

The forcings of anomalous divergent wind and transient vorticity fluxes to the anomaly of stationary waves of DJF 1982/1983 are studied. The results show that the anomaly of the transient vorticity flux convergence tends to cancel or dissipate the anomaly of the vorticity sources generated by divergent wind. The stationary wave anomalies are maintained by both of these forcings. It is also found that,for the DJF 1982/1983 case,both of the vorticity source anomaly over tropical and equatorial eastern Pacific and that over midlatitude north Pacific are important to maintain the atmospheric circulation anomaly over Pacific/North America region.