1953 年 3 巻 4 号 p. 269-275
It is shown that the hyd r o dynamical model of the vorticity waves proposed by RossBY can be safely applied to the easterly waves in the tropical latitudes. A simple explanation for the kinematics of the meandering and the well developed blocks of the westerlies in the middle latitudes as well as an account for the quasi-horizontal eddy motion and the equatorial westerlies frequently observed in the equatorial area is proposed, using the known solution of the nonlinear vorticity equation.