Abstract
The height change of 500mb isobaric surface in a barotropic atmosphere is calculated by making use of the coefficients of one-dimensional Fourier series along latitude circles with one-dimensional relaxation with respect to latitude.
In this paper, the tendency equations concerning Fourier coefficients along latitude circles are derived as a function of latitude from a vorticity equation, and their finite difference expressions are given in order to simplify the calculation. The subjects as to the number of component-waves to be considered and the choice of their interactions were the most important. The problem of error in this method was also considered.
