This paper covers mainly the synoptic analysis of the Southern Ocean from South America to New Zealand from December 1954 to March 1955. The pertinent reason for day to day analysis of the Southern Ocean is the control of the we of southern Australia by the westerlies. Points that satisfy objectivity are sketched, though subjectivity, mainly in determining development in the present and, occasionally in post-analysis, will always be a limiting factor. Conclusions from the analysis of the four month period include the fairly uniform longitudinal distribution of cyclones, the determination that lat. 45°S has the highest frequency of cyclogenesis, and an obvious source of polar anti-cyclogenesis south of the Atlantic Ocean. Various factors suggest a complexity of the circulation regime that a uniform surface should not engender. More efficient determination of chart evolution must await the establishment of complete radio aids over all of the network.
J.C. Langford (Fri,) studied this question.