On this day (5/10/25) sea ice area increased by 52k km2, while sea ice extent increased by 109k km2 This is shown most obviously again on the central arctic sea ice area graph, and also on the laptev graph Sea ice concentration has dropped to 3rd. Greenland and arctic circle greenland ice sheet, arctic ice shelves and glaciers moderator Quote arctic sea ice extent minimum 2025 the 2025 daily arctic sea ice extent minimum appears to be 4,550,822 km2 on the 8th september 2025, and 14th lowest in the 47 year satellite record Quote with 103k km2 sea ice area gains in the last 4 days from the current minimum, it is time to declare that the 2025 sea ice area mininmum has passed.
Antarctic coastal polynyas form as much as 10% of the overall southern ocean sea ice during a single season, [9] amounting to about 2,000 km3 of sea ice [10] surface water is enriched in salt from sea ice formation and cooled due to being exposed to a cold atmosphere during winter, which increases the density of this water mass.
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