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File: blogERSSTv5May21_620.png

Graph showing the evolution of sea surface temperatures in the tropical Pacific following every first-year La Niña

Image caption

Monthly sea surface temperature in the Niño 3.4 region of the tropical Pacific for 2020-21 (purple line) and all other years starting from first-year La Niña winters since 1950. Graph by Emily Becker based on ERSSTv5 temperature data.