In December 2024, the extent of sea ice in the Northern Hemisphere reached million square kilometers, down from ** million square kilometers a year earlier. While this is not the lowest figure recorded in recent years, it is still below the 30-year average of **** million square kilometers recorded between 1991 and 2020.
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National Oceanic and Atmospheric Administration. (February 11, 2025). Extent of sea ice in December in the Northern Hemisphere from 1980 to 2024 (in million square kilometers) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/505568/sea-ice-extent-in-december-in-the-northern-hemisphere/
National Oceanic and Atmospheric Administration. "Extent of sea ice in December in the Northern Hemisphere from 1980 to 2024 (in million square kilometers)." Chart. February 11, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/505568/sea-ice-extent-in-december-in-the-northern-hemisphere/
National Oceanic and Atmospheric Administration. (2025). Extent of sea ice in December in the Northern Hemisphere from 1980 to 2024 (in million square kilometers). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/505568/sea-ice-extent-in-december-in-the-northern-hemisphere/
National Oceanic and Atmospheric Administration. "Extent of Sea Ice in December in The Northern Hemisphere from 1980 to 2024 (in Million Square Kilometers)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 11 Feb 2025, /statistics/505568/sea-ice-extent-in-december-in-the-northern-hemisphere/
National Oceanic and Atmospheric Administration, Extent of sea ice in December in the Northern Hemisphere from 1980 to 2024 (in million square kilometers) ÌÇÐÄÆƽâ°æ, /statistics/505568/sea-ice-extent-in-december-in-the-northern-hemisphere/ (last visited July 31, 2026)
Extent of sea ice in December in the Northern Hemisphere from 1980 to 2024 (in million square kilometers) [Graph], National Oceanic and Atmospheric Administration, February 11, 2025. [Online]. Available: /statistics/505568/sea-ice-extent-in-december-in-the-northern-hemisphere/
