Abstract: Sutcliffe's theory of development is reviewed and extended, with particular reference to cyclonic development at sea level. It is shown that cyclogenesis results from an unbalance, in the layer below the level of non-divergence, ...

Abstract: An experiment, aimed at forecasting the formation and intensification of extra-tropical cyclones, was conducted from 4 January 1954 to 20 March 1954. The working hypothesis to be tested was formulated as follows: cyclonic ...

Abstract: An experiment was conducted during the period 11 January to 21 February 1956, for the purpose of determining the manner in which graphical integrations can best be used in providing prognostic charts for sea level and for ...