SOUTHERN OSCILLATION INFLUENCES ON TROPICAL CYCLONE ACTIVITY IN THE AUSTRALIAN SOUTH-WEST PACIFIC REGION

被引:72
作者
HASTINGS, PA
机构
[1] Applied Climate Research Unit, University of Queensland, St Lucia, Queensland
关键词
Australian/south‐west Pacific region; Hazard assessment; Southern Oscillation; Tropical cyclones;
D O I
10.1002/joc.3370100306
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
Tropical cyclone activity within the Australian (105°–165°E) and south‐west Pacific (145°E–150°W approximately) regions is examined during seasons affected by contrasting extremes of the Southern Oscillation (SO). In the Australian region, the most pronounced and consistent contrast of tropical cyclone frequency variability was within the eastern Australian region (145°–165°E) where anti‐ENSO (ENSO) conditions were associated with a higher (lower) incidence of tropical cyclogenesis. This relationship appears to be a manifestation of tropical cyclone behaviour in the wider south‐west Pacific region, wherein tropical cyclone origin points exhibit distinct areal patterning associated with times of extreme SO states. Intra‐seasonal temporal distributions of the Australian region tropical cyclogenesis and the south‐west Pacific tropical cyclone incidence are also examined. Copyright © 1990 John Wiley & Sons, Ltd
引用
收藏
页码:291 / 298
页数:8
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