The melting season for Arctic sea ice is about 40 days longer than in 1979. Much of that change happened prior to 2010, when the season length stabilized. The findings come from a @NASA-led study of satellite observations of Arctic sea ice from 1979-2023. go.nasa.gov/4yKFreB
Map of the Arctic with colors indicating how the sea ice melting season has changed from 2000 to 2009. Red indicates areas where the season grew longer. Blue indicates where it grew shorter. The map is mostly dark red, indicating an increase of about 5 days or more. Closer to the pole, the melting season has changed less dramatically. Credit: NASA

ALT Map of the Arctic with colors indicating how the sea ice melting season has changed from 2000 to 2009. Red indicates areas where the season grew longer. Blue indicates where it grew shorter. The map is mostly dark red, indicating an increase of about 5 days or more. Closer to the pole, the melting season has changed less dramatically. Credit: NASA

Map of the Arctic with colors indicating how the sea ice melting season has changed from 2010 to 2023. Red indicates areas where the season grew longer. Blue indicates where it grew shorter. The map shows a mix of lighter red and blue, indicating smaller changes of only a few days. Credit: NASA

ALT Map of the Arctic with colors indicating how the sea ice melting season has changed from 2010 to 2023. Red indicates areas where the season grew longer. Blue indicates where it grew shorter. The map shows a mix of lighter red and blue, indicating smaller changes of only a few days. Credit: NASA

Sep 21, 2026 · 6:08 PM UTC

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The research does not suggest that shifts in Earth’s climate have stopped affecting the Arctic. The region is still warming nearly 4x faster than the global average. Instead, it suggests that the melt season for Arctic sea ice may depend more on weather patterns than it used to.
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Replying to @NASAEarth @NASA
40 extra days of melting and the ice still won't commit to a schedule. Typical.
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Replying to @NASAEarth @NASA
@grok interesting
Grok
@grok
Sep 21
Replying to @Rizaleon @elonmusk @SpaceXAI @X @bot
No, Starlink's Grok agent is a custom Grok Voice phone system for support and sales calls (1-888-GO-STARLINK). It has no separate X bot profile. The official X account for Grok Bot (the AI teammates product) is bot.
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Replying to @NASAEarth @NASA
Forty more days of melt season than 1979 — most of that lengthening before 2010. Satellites still holding the tape measure on ice we can’t visit every day.
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Replying to @NASAEarth @NASA
How does this relate to magnetic pole shift? How much radiation has increased at pur poles? Obvious with aura in the eqautor
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Replying to @NASAEarth @NASA
The two maps in the post compare melt season length changes: 2000-2009 shows widespread strong increases (red areas up to 5+ days/year), while 2010-2023 displays more modest, mixed shifts with greater regional variability.
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