A five degree grid interval for numerical integration was used in the solution of the one dimensional differential equation of motion to the equivalent barotropic model (after Charney 1949) using data in the Australian region. The forecasts along adjacent latitudes were then juxtaposed (after Gates 1953) and a "two dimensional" forecast obtained. The "two dimensional" forecast requires considerable time for preparation and is thus uneconomical by our present standards, however, it is suggested that a one dimensional forecast along a selected latitude (say 40°S) When incorporated with the usual subjective prognostic may be used to practical advantage.
R. Maine (Sat,) studied this question.