While the threat of tropical cyclones increases around the world, a new study published in Nature Communications shows one area experienced a significant decline in cyclone activity. But, with recent changes in climatic patterns in the Pacific, the number of cyclones is expected to increase in the coming decades.
Cyclone Fani heading towards India in 2019. Credit: Florida Institute of TechnologyNature Communications
The paper,"Pacific Decadal Oscillation Causes Fewer Near-Equatorial Cyclones in the North Indian Ocean," is co-authored by Pallav Ray, associate professor in meteorology at Florida Tech, along with researchers from New York University Abu Dhabi, McGill University, Abu Dhabi Polytechnic, University of California San Diego, India Meteorological Department, Pacific Northwest National Laboratory, Cochin University of Science and Technology and the Ministry of Earth Sciences .
Tropical cyclones do not form easily near the equator but can intensify rapidly. The wind pattern in the Indian Ocean helps initiate the cyclone spin near the equator. Without the storm-weakening wind shear, storms can move and strengthen more easily. This research can help communities in the path of these rapidly intensifying storms better understand how to be prepared for them.
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