Impact of Large-Scale Dynamic versus Thermodynamic Climate Conditions on Contrasting Tropical Cyclone Genesis Frequency

S Sharmila; KJE Walsh

Journal article

Impact of Large-Scale Dynamic versus Thermodynamic Climate Conditions on Contrasting Tropical Cyclone Genesis Frequency

S Sharmila, KJE Walsh

JOURNAL OF CLIMATE | AMER METEOROLOGICAL SOC | Published : 2017

DOI: 10.1175/JCLI-D-16-0900.1

Abstract

Significant advances have been made in understanding the key climate factors responsible for tropical cyclone (TC) activity, yet any theory that estimates likelihood of observed TC formation rates from mean climate states remains elusive. The present study investigates how the extremes of observed TC genesis (TCG) frequency during peak TC seasons are interrelated with distinct changes in the large-scale climate conditions over different ocean basins using the global International Best Track Archive for Climate Stewardship (IBTrACS) dataset and ERA-Interim for the period 1979-2014. Peak TC seasons with significantly high and low TCG frequency are identified for five major ocean basins, and th..

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University of Melbourne Researchers

Kevin Walsh Author Earth Sciences

Related Projects (1)

Towards a climate theory of tropical cyclone formation

In Earth's current climate, about 80 to 90 tropical cyclones form every year around the globe, but the reasons why cyclones form at this rat..

Grants

Awarded by Australian Research Council (ARC)

Funding Acknowledgements

This research work is funded by the Australian Research Council (ARC) Discovery Project (Grant DP150102272). The authors acknowledge Prof. Suzana Camargo for useful discussions and Prof. Ian Simmonds for helpful comments on the earlier version of manuscript. The authors thank the editor and the anonymous reviewers for their insightful comments and suggestions on the earlier version of manuscript that have improved the quality of the paper.