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Southern Oscillation influences on tropical cyclone activity in the Australian/south‐west Pacific region
Author(s) -
Hastings Peter A.
Publication year - 1990
Publication title -
international journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0899-8418
DOI - 10.1002/joc.3370100306
Subject(s) - tropical cyclogenesis , tropical cyclone , climatology , el niño southern oscillation , tropical cyclone rainfall forecasting , cyclogenesis , african easterly jet , cyclone (programming language) , tropical cyclone scales , southern oscillation , geography , tropics , tropical wave , oceanography , environmental science , geology , biology , field programmable gate array , fishery , computer science , computer hardware
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.