Huge waves in the atmosphere dump extreme rain on northern Australia

Phys.org  October 10, 2024
Convectively coupled equatorial waves (CCEWs) can be potential sources of predictability for sub-seasonal to seasonal prediction over northern Australia. Researchers in Australia studied the relationship between these waves and rainfall in northern Australia from 1981 to 2018. They found the waves had a significant impact on rainfall during the southern summer (December–February) and autumn (March–May). When waves combined in certain ways, heavy rain events become even more likely. Due to Australia’s vast landmass and local geography, the impacts of these waves were quite different across the continent. They showed that the activity of the “atmospheric melodies” provided room for improvement in weather models. They found that interactions between multiple waves could act to amplify or suppress the mean daily and probability of extreme rainfall. According to the researchers their research highlights the important role of CCEWs on northern Australian precipitation variability… read more. TECHNICAL ARTICLE 

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