Washington, United States | AFP | Muser NewsDesk

The phenomenon El Niño has arrived, the US weather agency said Thursday, and scientists expect the pattern synonymous with droughts, floods and soaring temperatures will intensify into the end of the year, potentially to historic strength.

El Niño is a natural climate occurrence that warms surface temperatures in the central and eastern equatorial Pacific Ocean, bringing worldwide changes in winds and rainfall patterns and erratic weather.

Scientists fear it will exacerbate the heat of a planet already warming from burning fossil fuels, while amping up weather extremes.

“El Niño is here, and it could be one for the history books,” said meteorologist Haley Thiem in an explainer video from the US National Oceanic and Atmospheric Administration.

In its latest advisory, scientists at NOAA said there is a 63 percent chance “of a very strong El Niño during November-January that would rank among the largest El Niño events in the historical record going back to 1950.”

Every El Niño is different, but major events often follow familiar patterns. This includes drought across parts of the Amazon, Indonesia and Australia, disrupted monsoons in India, and shifting rainfall throughout the tropics.

Image: Infographic: Muser Press, based on information from NOAA, WMO, Copernicus Climate Change Service and NASA Earth Observatory (s. weather pattern El Niño)
El Niño alters atmospheric circulation and ocean conditions across the tropical Pacific. This schematic infographic compares typical neutral conditions with El Niño conditions and illustrates some of the most common global climate impacts associated with the phenomenon. Credit: Muser Press

It typically takes place every two to seven years and lasts around nine to 12 months.

El Niño tends to peak late in the year but heat in the oceans releases more slowly into the atmosphere, pushing up global temperatures the following year.

In response to the forecast, Marc Alessi of the Union of Concerned Scientists said “the combination of fossil fuel-caused climate change and a potential super El Niño event makes a terrible team,” saying it could “easily” push global temperatures to record levels.

“While El Niño is a naturally occurring phenomenon, there is evidence that fossil fuel-caused climate change is making El Niño events more intense,” he said in a statement to AFP.

Image: Infographic IRI - El Niño and rainfall
El Niño and rainfall. Typical rainfall patterns during El Niño events. Such teleconnections are likely during El Niño events, but not certain. Credit: IRI
‘Deadly siren’

Mohamed Adow, director of the Nairobi-based climate and energy think tank Power Shift Africa, said for millions of people across the globe “it’s not just another weather forecast” but a “deadly siren to be feared.”

“It means failed rains, dying crops, rising food prices, and families pushed to the edge yet again.”

Governments across the dry countries of Central America have raised alert levels over El Niño.

In that region known as the “Dry Corridor” — including parts of Guatemala, Honduras, El Salvador and Nicaragua — El Niño’s return has triggered fears of drought and stoked concerns of famine.

The Guatemalan government, for example, says it has 1.1 million rations ready to distribute in the face of a food security emergency.

In East Africa, Adow said the extremes will likely strike “communities already battered by droughts and floods in recent years.”

Predictions from elsewhere in the world mirror those of NOAA, anticipating a particularly strong El Niño.

“The odds are strongly in favor of a moderate to strong, or probably strong to record-breaking, event at this stage,” Carlo Buontempo, the director of Europe’s Copernicus Climate Change service, told AFP.

Earlier this month, UN chief Antonio Guterres urged the world to treat the likely intense incoming weather “as the urgent climate warning it is.”

“El Niño conditions will pour fuel on the fire of a warming world,” he said.

“The only effective response is climate action equal to the crisis — ending the addiction to fossil fuels, accelerating the shift to renewables, protecting the most vulnerable, and delivering early warning systems for all.”

The TAO story: Developing an El Niño observing system. Real-time data from moored ocean buoys improves detection, understanding and prediction of El Niño and La Niña. (NOAA)

© Agence France-Presse

Article Source:
Press Release/Material by Charlotte Causit, with Maggy Donaldson in New York | AFP
Featured image credit: Muser Press

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