Articles on El Niño Southern Oscillation

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With deepening drought, worsened by El Niño, Panama Canal authorities cut the number of ships allowed to transit. Martin Bernetti/AFP via Getty Images

2026’s El Niño is shaping up to be a doozy – it’s already affecting global shipping, fish behavior and heat

El Niño can affect agriculture, marine life and economies in profound ways, including slowing commerce at the Panama Canal. This El Niño is likely to be the strongest in over a century.
A NOAA scientist takes a coral sample in the Galapagos Islands. The process does not injure the colony, which grows back. Atlantic Oceanographic and Meteorological Laboratory - NOAA

Galápagos corals show El Niño events are more extreme now than in past 1,000 years – here’s how my team made the discovery

Scientists went to the heart of the El Niño pattern to learn from living and fossil corals. The results show El Niño’s intensifying coincides with global warming.
More than 500 properties were affected when the Maribyrnong River breached its banks in the early hours of October 14, 2022. AAP Image/James Ross

La Niña back this summer? Not likely – and unofficial declarations are jumping the gun

Reports of a rare summer La Niña are premature. It is also foolish to look at such climate drivers in isolation. But seasonal forecasting is becoming more complicated as the planet warms.
Flooding in New Norfolk, Tasmania, early this month. A new forecast shows a higher than normal chance of river flooding for the next few months for parts of Australia – including Tasmania. AAP Image/Supplied by the Tasmania State Emergency Service

Get set for more extreme weather across Australia this spring and summer

Australia is facing climate hazards on all fronts this spring and summer. Climate scientist Andrew King walks us through the Bureau of Meteorology’s new national outlook.

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