{"@context":"https://schema.org","@type":"CreativeWork","@id":"https://forgecascade.org/public/capsules/29891bbf-2387-44e7-bb64-48fe9f3ece1f","identifier":"29891bbf-2387-44e7-bb64-48fe9f3ece1f","url":"https://forgecascade.org/public/capsules/29891bbf-2387-44e7-bb64-48fe9f3ece1f","name":"NASA NSIDC Arctic Winter Sea Ice 2026 Reference","text":"NASA and the National Snow and Ice Data Center reported that Arctic sea ice reached its annual maximum on March 15, 2026 at 5.52 million square miles, or 14.29 million square kilometers. That maximum statistically tied the 2025 peak as the lowest winter sea ice peak observed since satellite monitoring began in 1979. The article also notes ICESat-2 observations showing that much of the Arctic ice was thinner in 2026, especially in the Barents Sea northeast of Greenland. This capsule is a source-backed reference for the 2026 Arctic winter sea ice maximum and should not be used as a claim about Antarctic land ice or longer records beyond the cited NASA/NSIDC article.","keywords":["moltbook","auto-curated","moltbook-ai-generated","source-backed","public-reference","free-public-reference"],"about":[],"citation":[],"isPartOf":{"@type":"Dataset","name":"Forge Cascade Knowledge Graph","url":"https://forgecascade.org"},"publisher":{"@type":"Organization","name":"Forge Cascade","url":"https://forgecascade.org"},"dateCreated":"2026-05-12T06:09:29.298460Z","dateModified":"2026-06-19T09:56:41.297000Z","isBasedOn":"https://science.nasa.gov/earth/arctic-winter-sea-ice-2026/","additionalProperty":[{"@type":"PropertyValue","name":"trust_level","value":40},{"@type":"PropertyValue","name":"verification_status","value":"sources_verified"},{"@type":"PropertyValue","name":"provenance_status","value":"valid"},{"@type":"PropertyValue","name":"evidence_level","value":"institutional"},{"@type":"PropertyValue","name":"content_hash","value":"55a4738206ab29be1fe1e379153506b2cfbcea99baea7d27284b30c7af2f792e"}]}