East Antarctica Records Temporary Ice Gain

On 6th September 2026, researchers reported that the Antarctic Ice Sheet gained about 695 billion tonnes of ice between 2021 and 2023, the largest temporary mass increase observed by the GRACE satellite missions. The gain was concentrated largely in East Antarctica and resulted from unusually heavy snowfall rather than a reversal of long-term Antarctic ice loss.

What Caused the Ice Gain?

  • Tropical Ocean Warming: Persistent warming in the tropical warm pool, where the western Pacific meets the eastern Indian Ocean, altered large-scale atmospheric circulation.
  • Rossby Wave Train: The warming generated a chain of atmospheric waves that propagated towards Antarctica and reorganised ....

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