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be revised. No measurement-error interval in this CSV. Zero Missing is not zero uncertainty.", "Mean ±2 sample SD is a descriptive reference band, not a confidence interval, event probability or attribution." ] }, "sourceRows": [ { "date": "1981-10-02", "year": 1981, "month": 10, "day": 2, "extentMillionKm2": 18.717, "missingMillionKm2": 0.0, "accepted": true }, { "date": "1981-10-04", "year": 1981, "month": 10, "day": 4, "extentMillionKm2": 18.67, "missingMillionKm2": 0.0, "accepted": true }, { "date": "1981-10-06", "year": 1981, "month": 10, "day": 6, "extentMillionKm2": 18.7, "missingMillionKm2": 0.0, "accepted": true }, { "date": "1981-10-08", "year": 1981, "month": 10, "day": 8, "extentMillionKm2": 18.701, "missingMillionKm2": 0.0, "accepted": true }, { "date": "1981-10-10", "year": 1981, "month": 10, "day": 10, "extentMillionKm2": 18.621, "missingMillionKm2": 0.0, "accepted": true }, { "date": "1981-10-12", "year": 1981, "month": 10, "day": 12, "extentMillionKm2": 18.689, "missingMillionKm2": 0.0, "accepted": true }, { "date": 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}, { "date": "2026-10-16", "year": 2026, "month": 10, "day": 16, "extentMillionKm2": 16.225, "missingMillionKm2": 0.0, "accepted": true }, { "date": "2026-10-17", "year": 2026, "month": 10, "day": 17, "extentMillionKm2": 16.204, "missingMillionKm2": 0.382, "accepted": false } ], "sourceRetrieval": { "available": true, "url": "https://noaadata.apps.nsidc.org/NOAA/G02135/south/daily/data/S_seaice_extent_daily_v4.0.csv", "retrievedAt": "2026-10-22T10:23:09.788251+00:00", "sha256": "824c6aff3c2e413d8531d67dd555c07b8189072ee4cd69893ec41cf79be930ef", "bytes": 1834319, "changedSinceSavedDraft": false, "archive": "sources/south-daily.csv" }, "sourceContext": "NSIDC current product page reports provider processing maintenance; checked22October2026. Latest accepted observations17OctoberArctic/16OctoberAntarctic, not the check date.", "interpretationSources": [ "https://nsidc.org/data/g02135/versions/4", "https://nsidc.org/learn/parts-cryosphere/sea-ice/why-sea-ice-matters", "https://science.nasa.gov/earth/earth-observatory/antarctic-sea-ice-grows-to-its-2026-maximum/" ], "publishedContext": [ { "title": "NASA: Antarctic Sea Ice Grows to Its 2026 Maximum", "url": "https://science.nasa.gov/earth/earth-observatory/antarctic-sea-ice-grows-to-its-2026-maximum/", "publishedAt": "2026-10-12", "verifiedAt": "2026-10-22", "observationPeriod": "2026-09-14 annual maximum", "finding": "The annual maximum reached 17.59 million km² on 14 September, third lowest in the satellite record." } ] }