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The Southern Oscillation is the atmospheric component of El Niño. This component is an oscillation in surface air pressure between the tropical eastern and the western Pacific Ocean waters. The El Niño–Southern Oscillation is a single climate phenomenon that periodically fluctuates between three phases: Neutral, La Niña or El Niño. [12]
The 2023–2024 El Niño was regarded as the fifth-most powerful El Niño–Southern Oscillation event in recorded history, resulting in widespread droughts, flooding and other natural disasters across the globe. The onset was declared on 4 July 2023 by the World Meteorological Organization (WMO) [1][2][3][4] It was estimated that the most ...
Walker circulation. A schematic diagram of the quasi-equilibrium and La Niña phase of the southern oscillation. The Walker circulation is seen at the surface as easterly trade winds which move water and air warmed by the sun towards the west. The western side of the equatorial Pacific is characterized by warm, wet low pressure weather as the ...
A major key to shaping weather patterns worldwide is found in the tropical Pacific Ocean, far from any mainland. Known as the El Niño-Southern Oscillation (ENSO), this climate phenomenon is the ...
The Pacific Ocean and surrounding areas. The 2014–2016 El Niño was the strongest El Niño event on record, with unusually warm waters developing between the coast of South America and the International Date Line. These unusually warm waters influenced the world's weather in a number of ways, which in turn significantly affected various parts ...
The last El Niño was in 2018-2019. ... La Niña conditions have occurred for three straight years, for only the third time in recorded history. The other two times were from 1973 to 1976 and 1998 ...
The Southern Oscillation is the atmospheric component of El Niño. This component is an oscillation in surface air pressure between the tropical eastern and the western Pacific Ocean waters. The strength of the Southern Oscillation is measured by the Southern Oscillation Index (SOI). The SOI is computed from fluctuations in the surface air ...
NOAA's Climate Prediction Center (CPC) issued a report on Thursday stating there is a 62% chance of El Niño developing between May and July 2023. The last time an El Niño occurred was during the ...