 Tropical Cyclone Numbers
Trends in tropical cyclone activity in the Australian region
(south of equator; 105-160° E)
show that the total number of cyclones has decreased in
recent decades.
However, the number of stronger cyclones
(minimum central pressure less than 970 hPa)
appears to have increased slightly.
Tropical cyclone numbers in the Australian region are influenced by the
El Niņo-Southern Oscillation
phenomenon and the decrease in total cyclone numbers may be
associated with an increased
frequency of
El Niņo events.
Further details:
Nicholls, N., Landsea, C. and Gill, J. (1998).
Recent trends in Australian region Tropical Cyclone activity.
Meteorology and Atmospheric Physics, 65, 197-205.
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