Cyclone frequency may rise over Indian coast from the warming of Pacific: study
A combination of global warming and a cyclical event called the Pacific Decadal Oscillation that repeats every 20-30 years, could make cyclones that originate near the Equator more frequent in the coming years
A recent study published in Nature Communications suggests that the frequency of tropical cyclones originating near the Equator may increase over the Indian coast due to global warming and a cyclical event called the Pacific Decadal Oscillation (PDO). The PDO, which repeats every 20-30 years, has been in a 'warmer' or positive phase since 2019 and could lead to more frequent cyclones in the post-monsoon months.
This is because warmer waters can provide more moisture for cyclones, allowing them to gain intensity. Currently, an El Nino is developing in the Pacific, which has already caused rainfall deficits in central and southern India. The PDO, which is less studied than the ENSO, is generally associated with reduced rainfall over India during a positive phase, but when combined with a negative PDO, can bring more rain to the country.
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