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The Arctic sea ice and its related biota are unique, and the year-round persistence of the ice has allowed the development of ice endemic species, meaning species not found anywhere else. There are differing scientific opinions about how long perennial sea ice has existed in the Arctic.
10 kwi 2023 · Over the last 40 years, annual Arctic sea ice measurements show ice shrinking by 12.6 percent each decade, a pace of decline that’s unmatched by any point in at least the last 1,500 years.
3 dni temu · As darkness extends southward across the Arctic, sea ice has advanced to much of the Russian shoreline, but growth has been particularly slow in the Barents and Kara Seas. In the Antarctic, with the onset of spring, the pace of seasonal sea ice loss has increased.
23 lis 2011 · Kinnard et al. present a high-resolution reconstruction of past sea-ice cover changes in the Arctic and show that the recent sea-ice loss is unprecedented in the context of the past 1,450...
The monthly Sea Ice Index provides a quick look at Arctic-wide changes in sea ice. It is a source for consistently processed ice extent and concentration images and data values since 1979. Monthly images show sea ice extent with an outline of the 30-year (1981-2010) median extent for that month (magenta line).
30 paź 2024 · Shown below are up-to-date satellite observations of the sea ice covers of both the Arctic and the Antarctic, along with comparisons with the historical satellite record of more than 4 decades.
Natural variability and rising global temperatures have worked together to melt greater amounts of Arctic sea ice. Some modelers have forecast an ice-free Arctic for at least part of the year before the end of the 21st century.
