An Annual Blast of Pacific Cold Water Did Not Occur, Alarming Scientists

The cold water upswell, which is vital to marine life, did not materialize for the first time on record. Researchers are trying to figure out why.
Each year between January and April, a blob of cold water rises from the depths of the Gulf of Panama to the surface, playing an essential role in supporting marine life in the region. But this year, it never arrived.
“It came as a surprise,” said Ralf Schiebel, a paleoceanographer at the Max Planck Institute for Chemistry who studies the region...
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