'Uncharted territory': UN declares El Nino weather event as records near
Australia has been described as the most vulnerable nation in the developed world after the United Nations declared the beginning of another El Nino event.
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What does an El Nino look like for Australia?
Its one of the most important drivers of unusual weather over the entire globe. For most of Australia, El Nino brings dry weather, increasing bushfire risk. But in other parts of the world, an El Nino event leads to wetter conditions in southern America.
The Bureau of Meteorology is yet to formally declare an El Nino event, but is expected to do so in the coming weeks. The agency has different criteria than other international weather agencies.
Three of the bureaus four El Nino conditions have been met, including warmer ocean waters accumulating near South America, international modelling, and a certain level of air pressure difference between Tahiti and Darwin over three months. The last criterion is the weakening of equatorial trade winds, which is yet to happen.
https://www.theage.com.au/environment/weather/uncharted-territory-un-declares-el-nino-as-records-near-20230703-p5dlb3.html