Satellite data shows that Arctic sea ice likely reached its annual minimum extent on September 19, 2023. Arctic sea ice likely reached its annual minimum extent on September 19, 2023, making it the sixth-lowest year in the satellite record, according to researchers at NASA and the National Snow a
This map, based on satellite data, shows the sea ice concentration on September 19, 2023. This is likely the annual minimum extent for this year.
Arctic sea ice likely reached its annual minimum extent on September 19, 2023, making it the sixth-lowest year in the satellite record, according to researchers atScientists track the seasonal and annual fluctuations because sea ice shapes Earth’s polar ecosystems and plays a significant role in global climate. Researchers at NSIDC and NASA use satellites to measure sea ice as it melts and refreezes.
Meier said the changes are a fundamental, decades-long response to warming temperatures. Since the start of the satellite record for ice in 1979, sea ice has not only been declining in the Arctic, but also getting younger. Earlier starts to spring melting and ever-later starts to autumn freeze-up are leading to. Research has shown that, averaged across the entire Arctic Ocean, freeze-up is happening about a week later per decade, or one month later than in 1979.
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