Tropical cyclones over north Indian Ocean during El-Niño Modoki years

K. Sumesh and M. Ramesh Kumar ()

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2013, vol. 68, issue 2, 1057-1074

Abstract: Tropical cyclones are the most hazardous weather systems, which form over warm ocean waters. The frequencies of tropical cyclones show variabilities over all the oceanic basins, during the El-Niño and El-Niño Modoki years. Recent studies have shown significant impact of air–sea interaction processes like El-Niño and El-Niño Modoki on the cyclone activity over different ocean basins. The results suggest in most cases, El-Niño events suppress the formation of cyclones over various basins. A recent study indicated that concurrent occurrence of El-Niño Modoki and positive Indian Ocean dipole (IOD) events can generate more cyclones over north-west Pacific. We propose to study the impact of El-Niño Modoki events on the formation of tropical cyclones over north Indian Ocean (NIO). Our present study suggests that the cyclogenesis over the NIO is a complex phenomenon, as it is influenced by several coupled ocean atmospheric phenomena such as El-Niño, El-Niño Modki, IOD and Madden–Julian oscillation. Copyright Springer Science+Business Media Dordrecht 2013

Keywords: Indian Ocean; Tropical cyclones; Cyclogenesis parameter; El-Niño and El-Niño Modoki (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1007/s11069-013-0679-x

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