El Nino has officially returned and is likely to yield extreme weather conditions later this year
After three years of the La Nina climate pattern, which often lowers global temperatures slightly, the hotter El Nino is back in action, according to an advisory issued on Thursday by the U.S. National Oceanic and Atmospheric Administration's Climate Prediction Center., near the coast of South America, and often accompanied by a slowing down or reversal of the easterly trade winds.
The last time an El Nino was in place, in 2016, the world saw its hottest year on record. Coupled with warming from climate change, 2023 or 2024 couldMost experts look to two agencies for confirmation that El Nino has kicked off — NOAA and Australia's Bureau of Meteorology . The two agencies use different metrics for declaring El Nino, with the Australian definition slightly stricter.
Australia's BOM needs things to be hotter, with the key regions of eastern Pacific 0.8C warmer than average., noting a 70% chance of El Nino developing this year. Those with their warmest waters near the west coast of South America are deemed Eastern Pacific events, such as the strong 1997-98 El Nino. The other arises in the Central Pacific, near the equator around Hawaii, as was the case in the most recent 2015-16 event. Weather anomalies can be more extreme depending on where waters are warmest, making things drier or wetter in certain regions.
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