Analysis of a 22-year sequence of summer and winter cyclone frequencies for the Drake Passage-Weddell Sea are produces important differences from prevous short terms studies. Two principal cyclone tracks ar shown to occur in both seasons at around 55¿ and 65AmDS. Principal components analysis suggests that the minor cyclone track in both seasons. Variations in cyclone frequency at high latitudes appear to be directly linked to the strength of the westerly circulation actively enhancing lee cyclogenesis near the Antarctic Peninsula. Investigation of the relationship between the predominant cyclone track and the inferred movement of the Weddell Sea pack ice does not support the hypothesis that cyclonic activity is determined by the position of the pack ice boundary. Furthermore, there is an observed, but not statistically proven, link between cyclone movement and the mean annual position of the Oceanic Polar Front. |