Australia is set to experience “wetter conditions” this summer due to a “mild” La Niña event, according to IPA’s Senior Fellow Jennifer Marohasy.

“It’s usually associated with wetter conditions, and it’s measured by the SOI index, which is the air pressure difference between Darwin and Tahiti,” she told Sky News host Andrew Bolt.

“So when you have a lower pressure in Darwin and a higher pressure in Tahiti, you have stronger trade winds, and the wind brings the moist air further across the Pacific.

“So it actually makes it to the Australian mainland, and we tend to have wetter summers and often more cyclones.”

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