—Indian Ocean Dipole (IOD) index plays an
important role in shaping the weather conditions in the Indian
Ocean and surrounding areas. It has a strong correlation with
Darwin pressure. This paper attempts to unfold its relationship
with the occurrence of Tropical Cyclones (TCs) in the
Australian basin. An analysis of 30 years’ data (1976-2006)
reveals that individual IOD pole (Western or Eastern) has
peak negative correlation (-.5 and -.4, respectively) with the
seasonal occurrences of TCs in Australia. Mainly the TC
occurrences in Western and Eastern sub-regions are correlated
with IOD index of both the poles. Northern sub-region is more
or less free from the influence of IOD index. These findings
provide further insight in understanding the genesis of tropical
cyclones in the Australian region.
—TC characteristics, occurrences, relationships
The authors are with Central Queensland University, Rockhampton,
Australia (e-mail: email@example.com).
Cite:Kamal Kumar Saha and Saleh A. Wasimi, "Interrelationship between Indian Ocean Dipole
(IOD) and Australian Tropical Cyclones," International Journal of Environmental Science and Development vol. 4, no. 6, pp. 647-651, 2013.