Abstract
Using the velocity profile with maximum zonal wind at about 26.5° latitude, and assuming the conservation of the absolute vorticity, the author derived the stream function for the finite perturbation motion. The method of analysis used is quite similar with that given in papers by HAURWITZ, CRAIG, NEAMTAN and H(/)ILAND. The streamlines associated with small stationary perturbations and the streamlines associated with relatively large stationary perturbations are drawn as examples. In the former case, the streamlines surround the pole and the effects of the disturbance appear as north-southerly undulations or meanderings of the streamlines. In the latter case, the basic westerly flow splits into two separate branches. Each of these branches transports an appreciable mass, and a dynamic high occurs just south of the northern current branch and a dynamic low just north of the southern branch. This may offer a simple explanation for the kinematics of blocking action on the rotating spherical earth.
