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Antarctic Ice Shrinks: 3rd Lowest Peak Recorded
22 Oct
Summary
- Antarctic sea ice reached its third-lowest winter peak in 2026.
- The 2026 peak extent was approximately 6.79 million square miles.
- A decade-long trend of lower-than-average sea ice levels persists.
The sea ice surrounding Antarctica reached its third-lowest maximum extent on September 14, 2026, measuring approximately 6.79 million square miles. This figure, based on satellite records dating back to the late 1970s, continues a decade-long pattern of below-average winter peaks that began around 2016.
These recent low extents are significant, as much of the satellite era previously saw steady or slightly growing sea ice. The lowest winter maximum and summer minimum on record both occurred in 2023. Scientists are investigating factors such as weakening cold water layers and shifting wind patterns that may contribute to this persistent reduction.
While the data is still provisional and subject to slight adjustments, multiple research centers confirm the trend. Researchers caution that more data is needed to distinguish between human-caused warming and natural variability. Regional differences were observed, with ice scarcity in some areas contrasting with partial recovery in others, but the overall winter coverage remained unusually low.
Meanwhile, the Arctic experienced its 10th-lowest minimum extent on September 12, 2026. Although higher than Antarctic levels, the Arctic minimum remains lower than any recorded before 2007, indicating a long-term decline in its sea ice.
